- GB2AB: Aston, BIR
- GB4ED: Edgmond, TFW
- GB4NS: South Nutfield, WSX
- GB5PE: Pendlebury, SLF
- GB7TR: Norton, WOR
- GB87N: Weedon Beck, NTH
- GB8IE: Tiffield, NTH
- GB8MR: Forkhill, ARM
- GB8TN: Crumlin, ANT
- GBAAB: Astley Abbotts, SHR
- GBAAW: Llandanwg, GWN
- GBABA: Aberaeron, CGN
- GBABB: Abbots Langley, HRT
- GBABC: Abercarn, CAY
- GBABD: Aberdeen, ABE
- GBABE: Aberdare, POW
- GBABF: Aberdyfi (Aberdovey), GWN
- GBABG: Abridge, ESS
- GBABH: Aldborough, NFK
- GBABI: Albrighton, SHR
- GBABJ: Saint Abbs, SCB
- GBABK: Ashbocking, SFK
- GBABL: Aberlour, MRY
- GBABM: Abermule, POW
- GBABN: Abington, NTH
- GBABO: Albourne, WSX
- GBABP: Aberporth, CGN
- GBABR: Appley Bridge, LAN
- GBABS: Aber Sôch (Abersoch), GWN
- GBABT: Abertillery, BGW
- GBABU: Ashburton, DEV
- GBABV: Aberdovey
- GBABW: Barmouth (Abermaw), GWN
- GBABX: Alford, LIN
- GBABY: Aboyne, ABD
- GBACA: Acharacle, HLD
- GBACB: Back, ELS
- GBACD: Abercanaid, MTY
- GBACE: Achiltibuie, HLD
- GBACF: Abercraf, POW
- GBACG: Acocks Green/Birmingham, BIR
- GBACH: Auchterarder, PKN
- GBACI: A'Chill, HLD
- GBACK: Ackworth, WKF
- GBACL: Acle, NFK
- GBACM: Altrincham, TRF
- GBACN: Acton, SHR
- GBACR: Accrington, LAN
- GBACS: Alcester, WAR
- GBACT: Acton Grange, CHE
- GBACU: Ashchurch, GLS
- GBACV: Cove (Aberdeen), ABD
- GBACY: Abercynon, RCT
- GBADA: Adbaston, STS
- GBADB: Aldbourne, WIL
- GBADD: Addingham, BRD
- GBADE: Ardsley East = Ardsley, LDS
- GBADF: Ardfern, AGB
- GBADG: Aldridge, WLL
- GBADH: Aldham, ESS
- GBADI: Addington, KEN
- GBADK: Ardkeen, DOW
- GBADL: Adlington, LAN
- GBADM: Aird Mhor (Ardmhor), ELS
- GBADN: Addlestone, SRY
- GBADO: Admaston, TFW
- GBADR: Aberdaron, GWN
- GBADS: Chaddesden, DER
- GBADT: Aldington, KEN
- GBADV: Andoversford, GLS
- GBADW: Addiewell, WLN
- GBADY: Adderbury, OXF
- GBADZ: Ashby de la Zouch, LEC
- GBAEB: Cadeby, YOR
- GBAED: Aberlady, ELN
- GBAEE: Abergele, CWY
- GBAEG: Aberbeeg
- GBAEN: Salen, HLD
- GBAER: Alderminster, WAR
- GBAET: Ardentinny, AGB
- GBAEW: Hanwell, LND
- GBAEY: Arley, WAR
- GBAFE: Aberfoyle, STG
- GBAFL: Bradfield, WBK
- GBAFO: Alford, ABD
- GBAFR: Chalford, GLS
- GBAFS: Sandford, NSM
- GBAFT: Alfriston, ESX
- GBAFW: Aberffraw, AGY
- GBAFY: Aberfeldy, PKN
- GBAG2: Doagh, ANT
- GBAGA: Baglan, NTL
- GBAGE: Bagstone, SGC
- GBAGH: Aghadowey, CLR
- GBAGL: Ardglass, DOW
- GBAGN: Abingdon, OXF
- GBAGO: Arinagour, AGB
- GBAGR: Ashley, CAM
- GBAGT: Barrington, SOM
- GBAGU: Ardgour, HLD
- GBAGW: Ardnagowan, AGB
- GBAGY: Abergavenny, MON
- GBAHE: Ashtead/London, SRY
- GBAHG: Ashington, SOM
- GBAHH: Auchterhouse, ANS
- GBAHL: Asheldham, ESS
- GBAHM: Altham, LAN
- GBAHN: Achnacroish, AGB
- GBAHO: Arkholme, LAN
- GBAHP: Ashampstead, WBK
- GBAHR: Hartshorne, DBY
- GBAHS: Ashurst, HAM
- GBAHT: Ashton, CHW
- GBAHV: Ash Vale, SRY
- GBAHW: Calthwaite, CMA
- GBAHY: Whalley, LAN
- GBAIE: Aviemore, HLD
- GBAIF: Askam In Furness, CMA
- GBAIG: Albrighton, SHR
- GBAIH: Airth, FAL
- GBAII: Airlie, ANS
- GBAIN: Aintree, LIV
- GBAIR: Airdrie, NLK
- GBAIS: St Agnes, CON
- GBAIT: Aith, ZET
- GBAKA: Acklam, NYK
- GBAKF: Bankfoot, PKN
- GBAKL: Auckengill, HLD
- GBAKR: Blackmoor, HAM
- GBAKS: Adwick le Street, DNC
- GBAKV: Aughnacloy, DGN
- GBAKY: Ashton Keynes, WIL
- GBALA: Alva, CLK
- GBALB: Aldeburgh, SFK
- GBALC: Aslacton, NFK
- GBALD: Aldershot, HAM
- GBALE: Alderley Edge, CHE
- GBALF: Alfreton, DBY
- GBALG: Alsager, CHE
- GBALH: Aldenham, HRT
- GBALI: Arlington, GLS
- GBALL: Alloa, CLK
- GBALM: Alnmouth, NBL
- GBALN: Alton, HAM
- GBALO: Adlington, CHE
- GBALP: Althorpe, NLN
- GBALQ: Alton, STS
- GBALR: Aldermaston, WBK
- GBALS: Alston, CMA
- GBALT: Alyth, PKN
- GBALU: Aldbury, HRT
- GBALV: Alveston, SGC
- GBALW: Alnwick, NBL
- GBALX: Alexandria
- GBALY: Alconbury, CAM
- GBAMB: Amble, NBL
- GBAMD: Armadale, Isle of Skye, HLD
- GBAME: Amersham, BKM
- GBAMF: Bamford, DBY
- GBAMG: Ambergate, DBY
- GBAMH: Ardmaleish, AGB
- GBAML: Ambleside, CMA
- GBAMM: Ammanford, CMN
- GBAMN: Ardnamurchan, HLD
- GBAMO: Bathampton, SOM
- GBAMP: Ampthill, CBF
- GBAMR: Aird Ma Ruibhe, AGB
- GBAMS: Amesbury, WIL
- GBAMT: Ackworth Moor Top, WKF
- GBAMU: Auchtermuchty, FIF
- GBAMW: Amlwch, AGY
- GBAMY: Bramley, HAM
- GBAN2: Ancaster, LIN
- GBAN9: Anderton, CHW
- GBANA: Anasuria, SCT
- GBANB: Anlaby
- GBANC: Barnacle, WAR
- GBAND: Stanton by Dale, DBY
- GBANE: Annesley, NTT
- GBANF: Stanford, BDF
- GBANG: Annalong, NYM
- GBANH: Arminghall, NFK
- GBANN: Annan, DGY
- GBANP: Annfield Plain, DUR
- GBANR: Llandre, CGN
- GBANS: Anstruther, FIF
- GBANT: Antrim, ANT
- GBANW: Annesley Woodhouse, NTT
- GBAOD: Aberbargoed, CAY
- GBAOE: Arboe (Ardboe), CKT
- GBAOF: Alba Oil Field
- GBAOH: Arrochar, AGB
- GBAOL: Abbotsley, CAM
- GBAOM: Abbots Morton, WOR
- GBAON: Aston, ROT
- GBAOT: Abbotsbury, DOR
- GBAOU: Aldebourne, WIL
- GBAOW: Aston Cantlow, WAR
- GBAOY: Almondsbury, SGC
- GBAPE: Addlethopre
- GBAPH: Alphington, DEV
- GBAPI: Appin, AGB
- GBAPL: Appleton, OXF
- GBAPN: Alperton, BEN
- GBAPP: Appledore
- GBAPS: Applecross, HLD
- GBAPT: Appleton Thorn, CHW
- GBAPU: Aspull, MAN
- GBAQO: Ash, KEN
- GBAQW: Longsight, MAN
- GBARB: Arbroath, ANS
- GBARC: Abercastle, PEM
- GBARD: Ardrossan, NAY
- GBARE: Armadale, WLN
- GBARG: Arisaig, HLD
- GBARI: Armitage, STS
- GBARK: Askern, DNC
- GBARL: New Alresford, HAM
- GBARM: Armagh, ARM
- GBARN: Arnesby, LEC
- GBARO: Arnold, NTT
- GBARP: West Harptree, BAS
- GBARR: Arrington, CAM
- GBARS: Ardersier, HLD
- GBART: Artigarvan, STB
- GBARU: Arundel, WSX
- GBARV: Ardveenish, ELS
- GBARW: Alrewas, STS
- GBARY: Bardney, LIN
- GBARZ: Abram, WGN
- GBAS6: Ashcott, SOM
- GBAS9: Ashley, STS
- GBASA: Saint-Anne's-on-Sea, LAN
- GBASB: Abbots Bromley, STS
- GBASC: Ascot, WNM
- GBASD: Ashford, KEN
- GBASE: Allestree, DBY
- GBASF: Ashford, SRY
- GBASG: Ardrishaig, AGB
- GBASH: Ashbourne, DBY
- GBASL: Ashton under Lyne, TAM
- GBASM: Ashton in Makerfield, SHN
- GBASN: Aston, WOK
- GBASO: Aston, HRT
- GBASP: Aspall, SFK
- GBASQ: Askham, CMA
- GBASS: Alness, HLD
- GBAST: Ashington, NBL
- GBASV: Aston Somerville, WOR
- GBASW: Ashwell, LEC
- GBASY: Arlesey, CBF
- GBATA: Athena FPSO
- GBATB: Great Barford, BDF
- GBATC: Attercliffe, SHF
- GBATE: Abernyte, PKN
- GBATF: Athelstaneford, ELN
- GBATG: Arthog, GWN
- GBATH: Atherstone, WAR
- GBATL: Acton Turville, GLS
- GBATM: Atcham, SHR
- GBATN: Aston Clinton, BKM
- GBATO: Acton, Sudbury, SFK
- GBATP: Armthorpe, DNC
- GBATR: Atherton, WGN
- GBATS: Sleat, HLD
- GBATT: Attenborough, NTT
- GBATW: Carthew, CON
- GBATX: Astley, WOR
- GBATY: Ansty, WSX
- GBAUC: Auchnacraig, AGB
- GBAUD: Audenshaw, TAM
- GBAUK: Auchinleck, EAY
- GBAUL: Aultbea, HLD
- GBAUS: Austrey, WAR
- GBAVC: Avoch, HLD
- GBAVE: Aveley, ESS
- GBAVH: Alvechurch, WOR
- GBAVL: Alveley, SHR
- GBAVO: Avonmouth, BST
- GBAVR: Andover, HAM
- GBAW3: Ansty, WAR
- GBAW6: Aldworth, WBK
- GBAWA: Ashwater, DEV
- GBAWC: Swanwick, DBY
- GBAWD: Harewood, YOR
- GBAWE: Bradwell on Sea, ESS
- GBAWH: Cawthorne, BNS
- GBAWL: Attleborough, NFK
- GBAWO: Alconbury Weston, CAM
- GBAWP: Ashwellthorpe, NFK
- GBAWR: Ailsworth, CAM
- GBAWS: Caersws, POW
- GBAX2: Farnborough, BRY
- GBAXB: Axbridge, SOM
- GBAXM: Axminster
- GBAXN: Barnham, SFK
- GBAXO: Axmouth, DEV
- GBAXP: Aspatria, CMA
- GBAY9: Aynho, OXF
- GBAYA: Aylesbeare, DEV
- GBAYB: Apperley Bridge
- GBAYD: Aberdour, FIF
- GBAYE: Aylesham, KEN
- GBAYF: Aycliffe, DUR
- GBAYH: Aylsham, NFK
- GBAYL: Aylesbury, BKM
- GBAYM: Aymestrey, HEF
- GBAYN: Haydon, DOR
- GBAYR: Ayr, SAY
- GBAYS: Aylesford, KEN
- GBAYT: Aylestone, LCE
- GBAYW: Aberystwyth, CGN
- GBAZV: Appleby, CMA
- GBB8T: Branston, LIN
- GBB9D: Bradford, SOM
- GBBA5: Blackburn, ABD
- GBBAA: Bala, GWN
- GBBAB: Banbury, OXF
- GBBAC: Balsall Common, SOL
- GBBAD: Barry Dock, VGL
- GBBAE: Ballyclare, ANT
- GBBAF: Barrowford, LAN
- GBBAG: Baginton, WAR
- GBBAH: Barrhead, ERW
- GBBAI: Baildon, BRD
- GBBAK: Barnoldswick, LAN
- GBBAL: Baldock, HRT
- GBBAM: Bingham, NTT
- GBBAN: Bangor, DOW
- GBBAO: Bascote, WAR
- GBBAP: Bacup, LAN
- GBBAR: Barnes, WND
- GBBAS: Basildon, ESS
- GBBAT: Battlesbridge, ESS
- GBBAU: Baulking, OXF
- GBBAV: Bidford, WAR
- GBBAW: Baltic Wharf, KEN
- GBBAX: Ballater, ABD
- GBBAY: Batley, KIR
- GBBAZ: Barton on Sea
- GBBB2: Bobbington, SHR
- GBBBA: Burbage, WIL
- GBBBB: Breaston, DRY
- GBBBC: Benbecula
- GBBBD: Barton Bendish, NFK
- GBBBE: Branscombe, DEV
- GBBBG: Banbridge, BNB
- GBBBH: Bilborough, NTT
- GBBBI: Burrowbridge, SOM
- GBBBK: Burton Bradstock, DOR
- GBBBL: Beauly, HLD
- GBBBN: Balbriggan
- GBBBP: Bembridge, IOW
- GBBBR: Boroughbridge, NYK
- GBBBS: Blackbush
- GBBBT: Saint Bees, CMA
- GBBBU: Bredbury, SKP
- GBBBW: Buckland Brewer, DEV
- GBBBX: Barnstone, NTT
- GBBBY: Brookenby, LIN
- GBBCA: Barnard Castle, DUR
- GBBCB: Blackboys, ESX
- GBBCC: Beccles, SFK
- GBBCE: Barcaldine, AGB
- GBBCF: Blackfordby, LEC
- GBBCG: Bletchingdon, OXF
- GBBCH: Bruichladdich, AGB
- GBBCI: Birchington, KEN
- GBBCK: Brackley, NTH
- GBBCL: Buckley, FLN
- GBBCM: Balcombe, WSX
- GBBCN: Brecon, POW
- GBBCO: Blackrod, BOL
- GBBCP: Bricklehampton, WOR
- GBBCR: Buck's Cross, DEV
- GBBCS: Brancaster Staithe, NFK
- GBBCT: Beckton, NWM
- GBBCU: Ballachulish, HLD
- GBBCV: Birch Vale, DBY
- GBBCW: Blackwood Hill, MON
- GBBCY: Barton in the Clay, CBF
- GBBD2: Bedhampton, HAM
- GBBDA: Birkdale, SFT
- GBBDB: Barnoldby le Beck
- GBBDC: Bordon Camp, CAM
- GBBDD: Beddington, CRY
- GBBDE: Biddenden, KEN
- GBBDF: Broadford, Isle of Skye, HLD
- GBBDG: Bason Bridge, SOM
- GBBDH: Blidworth, NTT
- GBBDI: Brodick, Isle of Arran, NAY
- GBBDK: Banchory - Devenick, ABD
- GBBDL: Bedale, NYK
- GBBDM: Bodmin, CON
- GBBDN: Boldon, STY
- GBBDO: Bidston, WRL
- GBBDP: Birdlip, GLS
- GBBDR: Brynsadler, RCT
- GBBDS: Bieldside, ABD
- GBBDT: Broadstairs, KEN
- GBBDU: Biddulph, STS
- GBBDW: Bedwas, CAY
- GBBDX: Baldirton, CHW
- GBBDY: Brawdy, PEM
- GBBDZ: Bardsea, CMA
- GBBE2: Bubwith, ERY
- GBBEA: Beaconsfield, BKM
- GBBEB: Bebington, WRL
- GBBEC: Beckingham, LIN
- GBBED: Bedfont, HNS
- GBBEE: Beeston, NTT
- GBBEF: Bedford, BDF
- GBBEG: Bordesley Green, BIR
- GBBEH: Berry Head
- GBBEI: Beith, NAY
- GBBEK: Beckermet, CMA
- GBBEL: Belfast, BFS
- GBBEM: Burslem, STS
- GBBEN: Belton, NLN
- GBBEO: Burrelton, PKN
- GBBEQ: Braemar, ABD
- GBBER: Bearsted, KEN
- GBBES: Benson, OXF
- GBBET: Bethesda, PEM
- GBBEU: Bures, SFK
- GBBEV: Beverley, ERY
- GBBEW: Beaworthy, DEV
- GBBEX: Bexley, BEX
- GBBEY: Bromley, KEN
- GBBEZ: Bearley, WAR
- GBBFA: Blandford Saint Mary, DOR
- GBBFB: Braefoot Bay, FIF
- GBBFC: Burghfield Common, WBK
- GBBFD: Brentford, EAL
- GBBFE: Brierfield, LAN
- GBBFF: Banff, ABD
- GBBFG: Buckfastleigh, DEV
- GBBFH: Bramfield, HRT
- GBBFI: Binfield, BRC
- GBBFL: berinsfield, OXF
- GBBFM: Bishops Frome, HEF
- GBBFN: Balfron, STG
- GBBFO: Bodffordd, AGY
- GBBFP: Blackford, ABD
- GBBFR: Blackford, PKN
- GBBFU: Broughton In Furness, CMA
- GBBFY: Briton Ferry, NTL
- GBBG4: Braughing, HRT
- GBBGA: Bridge of Allan, STG
- GBBGD: Bridgend, ANS
- GBBGE: Barns Green, WSX
- GBBGF: Bridge of Don, ABE
- GBBGG: Brigg, NLN
- GBBGH: Burscough, LAN
- GBBGI: Bere Regis, DOR
- GBBGK: Basingstoke, HAM
- GBBGL: Bagillt, FLN
- GBBGN: Borough Green, KEN
- GBBGO: Bargoed, CAY
- GBBGQ: Breage, CON
- GBBGR: Burnham Green, HRT
- GBBGS: Bagshot, SRY
- GBBGT: Billingshurst, WSX
- GBBGU: Bridgerule, DEV
- GBBGV: Bromsgrove, WOR
- GBBGW: Ballygowan, DOW
- GBBGX: Biggar, SLK
- GBBGY: Bingley, BRD
- GBBH2: Bethersden, KEN
- GBBHA: Beetham, CMA
- GBBHB: Ballyhalbert, DOW
- GBBHC: Benllech, AGY
- GBBHD: George Best Belfast City Apt/Belfast, BFS
- GBBHE: Balsall Heath, BIR
- GBBHF: Braishfield, HAM
- GBBHG: Bellaghy, MFT
- GBBHH: Buckhurst Hill, ESS
- GBBHI: Bardon Hill, LEC
- GBBHJ: Bramshall, STS
- GBBHK: Bromborough, WRL
- GBBHL: Bramhall, SKP
- GBBHM: Birmingham, BIR
- GBBHN: Bishop Thornton, NYK
- GBBHO: Boughton, NFK
- GBBHP: Beckhampton, WIL
- GBBHR: Barrow-upon-Humber, NLN
- GBBHS: Barnet, BNE
- GBBHT: Blackheath/London
- GBBHU: Bredhurst, KEN
- GBBHV: Buckhaven, FIF
- GBBHW: Billingham, STT
- GBBHX: Bradenham, BKM
- GBBHY: Billinghay, LIN
- GBBIA: Bicknacre, ESS
- GBBIB: Binbrook, LEC
- GBBIC: Bicester, OXF
- GBBID: Bideford
- GBBIE: Birtley, NBL
- GBBIF: Barrow in Furness, CMA
- GBBIG: Bridgtown, STS
- GBBIH: Bickenhill, SOL
- GBBII: Brill, BKM
- GBBIK: Briston, NFK
- GBBIL: Billericay, ESS
- GBBIM: Birdham, WSX
- GBBIN: Ballingry, FIF
- GBBIO: Bitton, SGC
- GBBIP: Bishop Auckland, DUR
- GBBIR: Birtley, GAT
- GBBIS: Bilston, WLV
- GBBIT: Birstall, LEC
- GBBIW: Biggleswade, CBF
- GBBIX: Brixworth, NTH
- GBBIY: Bisley, GLS
- GBBJT: Bartestree, HEF
- GBBK4: Beckington, SOM
- GBBK5: Blackheath, SAW
- GBBK7: Barkston, LIN
- GBBK9: Barkisland, CLD
- GBBKA: Buckfast, DEV
- GBBKB: Bannockburn, STG
- GBBKC: Backaland, Eday, ORK
- GBBKD: Buckden, CAM
- GBBKE: Berkeley, GLS
- GBBKF: Belleek, FER
- GBBKG: Barking/London, ESS
- GBBKH: Berkhamsted, HRT
- GBBKI: Blackhall Colliery, DUR
- GBBKK: Breakish, HLD
- GBBKL: Bickley, BRY
- GBBKM: Beckenham, BRY
- GBBKN: Bracknell, BRC
- GBBKO: Bally Kelly
- GBBKP: Brookmans Park, HRT
- GBBKQ: Bicker, LIN
- GBBKR: Brockworth, GLS
- GBBKS: Blackness, FAL
- GBBKT: Brockenhurst, HAM
- GBBKW: Bakewell, DBY
- GBBKX: Blackmore End, ESS
- GBBKY: Blockley, GLS
- GBBLA: Blackford, SOM
- GBBLB: Blackburn, LAN
- GBBLC: Blakeney, NFK
- GBBLD: Blaydon, GAT
- GBBLE: Bletchley, BKM
- GBBLF: Blandford Forum, DOR
- GBBLG: Ballygown, AGB
- GBBLH: Ballynahinch, DOW
- GBBLI: Balintore, HLD
- GBBLJ: Blairmore, AGB
- GBBLK: Blackpool, LAN
- GBBLL: Bellshill, NLK
- GBBLM: Ballymoney, BLY
- GBBLN: Bletchingley, SRY
- GBBLO: Balerno, EDH
- GBBLP: Belper, DBY
- GBBLQ: Belton, LIN
- GBBLR: Ballylumford, LRN
- GBBLS: Brightlingsea, ESS
- GBBLT: Bolton, BOL
- GBBLU: Beaulieu, HAM
- GBBLV: Belvedere, BEX
- GBBLW: Blackwood, CAY
- GBBLX: Bloxwich, WLL
- GBBLY: Blyth, NBL
- GBBLZ: Barlborough, DBY
- GBBM9: Balmoral, ANT
- GBBMA: Burnham-on-Sea, SOM
- GBBMB: Bamberbridge, LAN
- GBBMC: Balmacara, HLD
- GBBMD: Borehamwood, HRT
- GBBME: Bermondsey/London, SWK
- GBBMF: Bramfield, SFK
- GBBMH: Bramhope, LDS
- GBBMI: Brackmills, NTH
- GBBMK: Burnham Market, NFK
- GBBML: Bramley, ROT
- GBBMM: Bromham, WIL
- GBBMN: Beaminster, DOR
- GBBMO: Burnmouth, SCB
- GBBMP: Brompton, KEN
- GBBMR: Beaumaris, GWN
- GBBMS: Bushmills, MYL
- GBBMT: Belmont, Unst, ZET
- GBBMU: Barmouth
- GBBMW: Brynmawr, BGW
- GBBMX: Boulmer
- GBBMY: Bramley, ROT
- GBBNA: Brynna, RCT
- GBBNB: Bunnahabhain, AGB
- GBBNC: Banchory, ABD
- GBBND: Barnstaple, DEV
- GBBNE: Bran End, ESS
- GBBNF: Benfield, DGY
- GBBNG: Bangor, GWN
- GBBNH: Barton upon Humber, NLN
- GBBNI: Bethania, CGN
- GBBNJ: Barston, SOL
- GBBNK: Brinklow, WAR
- GBBNL: Binley, HAM
- GBBNM: Barton, CHW
- GBBNN: Braunton
- GBBNO: Barton-under-Needwood, STS
- GBBNR: Ballantrae, SAY
- GBBNS: Bolton le Sands, LAN
- GBBNT: Bridgnorth, SHR
- GBBNW: Burtonwood, WRT
- GBBNX: Blackwell, DBY
- GBBNY: Bonnybridge, FAL
- GBBO2: Bradford, DEV
- GBBOA: Bradford on Avon, WIL
- GBBOC: Burnham on Crouch, ESS
- GBBOD: Boscombe, DOR
- GBBOE: Bootle, SFT
- GBBOF: Banff Offshore
- GBBOG: Bonnyrigg, MLN
- GBBOH: Bournemouth, DOR
- GBBOI: Bollington, CHE
- GBBOK: Brook, HAM
- GBBOL: Botley, BKM
- GBBOM: Boultham, LIN
- GBBON: Bo'ness, FAL
- GBBOO: Bootle, CMA
- GBBOP: Bishopton, RFW
- GBBOQ: Broadstone, POL
- GBBOR: Borden, KEN
- GBBOS: Boston, LIN
- GBBOT: Borth-y-Gest, GWN
- GBBOU: Bourton-on-the-Water, GLS
- GBBOW: Bowling, RFW
- GBBOX: Box, WIL
- GBBOY: Botley, HAM
- GBBOZ: Bilton, NYK
- GBBPC: Bishop's Cleeve, GLS
- GBBPD: Bampton, DEV
- GBBPE: Broadmoor, PEM
- GBBPF: Beryl Platform
- GBBPG: Bishops Itchington, WAR
- GBBPH: Bulphan, THR
- GBBPK: Bishopstoke, HAM
- GBBPL: Black Pill, SWA
- GBBPM: Burpham, SRY
- GBBPO: Brampton, CAM
- GBBPT: Burry Port, CMN
- GBBPW: Bishop's Waltham, HAM
- GBBPY: Bishops Lydeard, SOM
- GBBQH: Biggin Hill, SRY
- GBBQK: Banks, LAN
- GBBQL: Belleek, ARM
- GBBQN: Burnaston, DBY
- GBBQQ: Bickington
- GBBQT: Belton, LEC
- GBBQX: Beadnell, NBL
- GBBQY: Broseley, SHR
- GBBR9: Bramley, SRY
- GBBRA: Brandon, SFK
- GBBRB: Bradwell, DBY
- GBBRC: Brechin, ANS
- GBBRD: Bridgend, AGB
- GBBRE: Braehead, NLK
- GBBRF: Bradford, BRD
- GBBRG: Bridgend, BGE
- GBBRH: Brighouse, CLD
- GBBRI: Braintree, ESS
- GBBRJ: Brora, HLD
- GBBRK: Birkenhead, WRL
- GBBRL: Barwell, LEC
- GBBRM: Brantham, SFK
- GBBRN: Burnley, LAN
- GBBRO: Broadheath, TRF
- GBBRP: Bridport, DOR
- GBBRQ: Bradley, STS
- GBBRR: Barra
- GBBRS: Bristol, BST
- GBBRT: Bridlington, ERY
- GBBRU: Bruray, Out Skerries, ZET
- GBBRV: Barrow Haven, NLN
- GBBRW: Bridgwater, SOM
- GBBRX: Brixham
- GBBRY: Bryn, NTL
- GBBRZ: Brenchley, KEN
- GBBSA: Banstead, SRY
- GBBSC: Boscastle, CON
- GBBSD: Bearsden
- GBBSE: Bury Saint Edmunds, SFK
- GBBSF: Bassingfield, NTT
- GBBSG: Brislington, BST
- GBBSH: Brighton, ESX
- GBBSI: Bognor Regis, WSX
- GBBSK: Bradley Stoke, SGC
- GBBSL: Bosley, CHE
- GBBSM: Bourton, NSM
- GBBSN: Baltasound, ZET
- GBBSO: Bolsover, DBY
- GBBSP: Bishopbriggs, EDU
- GBBSQ: Billesdon, LEC
- GBBSR: Bransgore, HAM
- GBBSS: Borrowstowness, CMA
- GBBST: Bishop's Stortford, HRT
- GBBSW: Bishopsworth, BST
- GBBSX: Beesands, DEV
- GBBSY: Barnsley, BNS
- GBBSZ: Branston, STS
- GBBT3: Barlestone, LEC
- GBBT9: Baughurst, HAM
- GBBTA: Broughton Astley, LEC
- GBBTB: Barnetby-le-Wold, NLN
- GBBTC: Barton Stacey, HAM
- GBBTD: Burton, PEM
- GBBTE: Battle, ESX
- GBBTF: Bathford, BAS
- GBBTG: Bethnal Green/London, TWH
- GBBTH: Bathgate, WLN
- GBBTI: Bailleston, GLG
- GBBTK: Bedstone, SHR
- GBBTL: Burntisland, FIF
- GBBTM: Bath, BAS
- GBBTN: Bedlington, NBL
- GBBTO: Buntingford, HRT
- GBBTP: Bilsthorpe, NTT
- GBBTR: Burton upon Trent, STS
- GBBTS: Bircotes, NTT
- GBBTT: Battersea, WND
- GBBTU: Bontddu, GWN
- GBBTW: Betchworth, SRY
- GBBTY: Botley, OXF
- GBBTZ: Butterwick, LIN
- GBBUA: Budleigh Salterton
- GBBUB: Bugbrooke, NTH
- GBBUC: Buckie, MRY
- GBBUD: Bude, CON
- GBBUE: Bursledon, HAM
- GBBUF: Burray, ORK
- GBBUG: Bungay, SFK
- GBBUH: Burghead, MRY
- GBBUI: Builth Wells, POW
- GBBUJ: Burton Joyce, NTT
- GBBUK: Buckingham, BKM
- GBBUL: Burgess Hill, WSX
- GBBUM: Burnham, BKM
- GBBUN: Burton, LIN
- GBBUO: Barrow On Soar, LEC
- GBBUP: Bulpham, THR
- GBBUR: Bourne, LIN
- GBBUS: Burton upon Stather, NLN
- GBBUT: Burton Latimer, NTH
- GBBUW: Burntwood, STS
- GBBUX: Buxton, DBY
- GBBUY: Bury, WSX
- GBBUZ: Burley, HAM
- GBBVA: Belgravia, LND
- GBBVB: Berrynarbor, DEV
- GBBVD: Bovingdon, DOR
- GBBVE: Bournville/Birmingham, BIR
- GBBVN: Blaenavon, TOF
- GBBVO: Burravoe, ZET
- GBBVR: Balvicar, AGB
- GBBVT: Bovey Tracey
- GBBVY: Bardon, LEC
- GBBVZ: Bovington Camp, DOR
- GBBWA: Broadway, WOR
- GBBWC: Burwick, ORK
- GBBWD: Brentwood, ESS
- GBBWE: Bowden, SCB
- GBBWG: Bowers Gifford
- GBBWH: Birstwith, NYK
- GBBWI: Bridge of Weir
- GBBWK: Berwick-upon-Tweed, NBL
- GBBWL: Bothwell, SLK
- GBBWM: Bray, WNM
- GBBWN: Bowburn, DUR
- GBBWO: Bedworth, WAR
- GBBWP: Bowthorpe, NFK
- GBBWQ: Bow, DEV
- GBBWR: Burrow, SOM
- GBBWS: Brownhills, WLL
- GBBWT: Bawtry, DNC
- GBBWU: Barrow upon Trent, DBY
- GBBWV: Budock Water, CON
- GBBWW: Brinkworth, WIL
- GBBWX: Brettenham, NFK
- GBBWY: Bodelwyddan, DEN
- GBBWZ: Bagworth, LEC
- GBBXB: Bexhill, ESX
- GBBXC: Betws-y-Coed
- GBBXD: Boxted, ESS
- GBBXE: Lambeth, LBH
- GBBXF: Bassingham, LIN
- GBBXG: Brassington, DBY
- GBBXL: Bexleyheath, BEX
- GBBXM: Ballinamallard, FER
- GBBXN: Broxbourne, HRT
- GBBXO: Boxford, SFK
- GBBXQ: Braunstone, LEC
- GBBXR: Burwell, CAM
- GBBXS: Brighstone, IOW
- GBBXT: Brotton, RCC
- GBBXU: Broxburn, WLN
- GBBXW: Bexwell, NFK
- GBBXX: Beer, DEV
- GBBXY: Bunny, NTT
- GBBY2: Bentley FPSO, ZET
- GBBY3: Blyton, LIN
- GBBY4: Blaby, LEC
- GBBYA: Bardsley, OLD
- GBBYB: Blythe Bridge, STS
- GBBYC: Ballycastle, ANT
- GBBYD: Bromyard, HEF
- GBBYE: Bushey Heath, HRT
- GBBYF: Byfleet, SRY
- GBBYG: Barry, VGL
- GBBYH: Betws-yn-rhos, CWY
- GBBYI: Brynsiencyn, AGY
- GBBYL: Bulwell/Nottingham, NTT
- GBBYM: Ballymena, BLA
- GBBYN: Broadmayne, DOR
- GBBYP: Ballintoy, ANT
- GBBYQ: Bushey, HRT
- GBBYR: Blantyre, SLK
- GBBYS: Abbeystead, LAN
- GBBYT: Bradworthy, DEV
- GBBYU: Little Chalfont, BKM
- GBBYW: Ballygawley, DGN
- GBBYY: Broughty Ferry, DND
- GBBZD: Braddan
- GBBZE: Belford, NBL
- GBBZL: Birstall, KIR
- GBBZR: Bryher, CON
- GBBZT: Broughton, FLN
- GBBZX: Bramshill, HAM
- GBBZZ: Brize Norton, OXF
- GBC5T: Cardington, BDF
- GBC8N: Colney, NFK
- GBCAA: Caldecote, CAM
- GBCAB: Carbost, HLD
- GBCAC: Castle Cary, SOM
- GBCAD: Castle Donington, LEC
- GBCAE: Caerphilly, CAY
- GBCAF: Collafirth, ZET
- GBCAG: Ceann a Gharaidh, Eriskay, ELS
- GBCAH: Carnlough, LRN
- GBCAI: Caistor, LIN
- GBCAK: Carluke, SLK
- GBCAL: Callander, STG
- GBCAM: Cambus, CLK
- GBCAN: Canvey Island, ESS
- GBCAO: Carlton, NYK
- GBCAP: Capel, SRY
- GBCAQ: Cam, GLS
- GBCAR: Cardigan (Aberteifi), CGN
- GBCAS: Castleton, DBY
- GBCAT: Catrine, EAY
- GBCAU: Camusnagaul, HLD
- GBCAW: Charlwood, SRY
- GBCAX: Carlisle, CMA
- GBCAY: Camberley, SRY
- GBCAZ: Carnwath, SLK
- GBCB2: Colburn, NYK
- GBCBA: Castlebay, ELS
- GBCBB: Coombe Bissett, WIL
- GBCBD: Carrbridge, HLD
- GBCBE: Camber, ESX
- GBCBG: Corbridge, NBL
- GBCBH: Cobham, KEN
- GBCBI: Canonbie, DGY
- GBCBK: Cranbrook, KEN
- GBCBL: Cairnbulg, ABD
- GBCBM: Combe Martin, DEV
- GBCBN: Chilbolton, HAM
- GBCBO: Cranborne, DOR
- GBCBR: Colnbrook, SRY
- GBCBS: Cambois, NBL
- GBCBT: Campbeltown, AGB
- GBCBU: Cambuslang, SLK
- GBCBW: Camberwell, MRT
- GBCBX: Baxenden, LAN
- GBCBY: Corby, NTH
- GBCCA: Caledon
- GBCCB: Cascob, POW
- GBCCC: Criccieth, GWN
- GBCCE: Catterline, ABD
- GBCCF: Cockfosters, BNE
- GBCCG: Church Gresley, DBY
- GBCCH: Christchurch, DOR
- GBCCK: Cleckheaton, KIR
- GBCCL: Cape Cornwall, CON
- GBCCN: Chipping Campden, GLS
- GBCCO: Colden Common, HAM
- GBCCR: Catterick, NYK
- GBCCS: Chatteris, CAM
- GBCCT: Calcot, WBK
- GBCCU: Chiddingstone Causeway, KEN
- GBCCV: Crossnacreevy, CSR
- GBCCW: Churchstow, DEV
- GBCCY: Castlecary, FAL
- GBCD3: Cleveland, NYK
- GBCDA: Cheddar, SOM
- GBCDB: Cadeby, LEC
- GBCDC: Caldecott, NTH
- GBCDD: Chadderton, OLD
- GBCDE: Chadwell Saint Mary, ESS
- GBCDF: Cardiff, CRF
- GBCDG: Cowbridge, VGL
- GBCDH: Cheadle Hulme, SKP
- GBCDI: Crediton, DEV
- GBCDK: Chideock, DOR
- GBCDL: Cheadle, STS
- GBCDM: Chidham, WSX
- GBCDN: Castledawson, MFT
- GBCDO: Condicote, GLS
- GBCDR: Curdridge, HAM
- GBCDS: Coldstream, SCB
- GBCDT: Caldicot, MON
- GBCDU: Cowfold, WSX
- GBCDW: Chadwell Heath, RDB
- GBCDX: Cheddington, BKM
- GBCDY: Cradley, DUD
- GBCDZ: Chadwell, LEC
- GBCEA: Cleland, NLK
- GBCEB: Cemaes Bay, AGY
- GBCED: Coleford, GLS
- GBCEE: Cheetham Hill, MAN
- GBCEG: Chester, CHW
- GBCEH: Cheadle Heath, MAN
- GBCEI: Ceinewydd (New Quay), CGN
- GBCEL: Cellardyke, FIF
- GBCEM: Clayton-le-Moors, LAN
- GBCEN: Colerne, WIL
- GBCEO: Charlecote, WAR
- GBCER: Chesterton, STS
- GBCES: Chesterfield, DBY
- GBCET: Carsethorn
- GBCEY: Cowley, OXF
- GBCFD: Chelmsford, ESS
- GBCFE: Crieff, PKN
- GBCFF: Carryduff, ARD
- GBCFG: Carrickfergus, CKF
- GBCFL: Cuckfield, WSX
- GBCFM: Corfe Mullen, DOR
- GBCFO: Chandlers Ford, HAM
- GBCFT: Clifton, BST
- GBCFZ: Church Lawford, WAR
- GBCG3: Camlough, ARM
- GBCGA: Craigellachie, MRY
- GBCGB: Coldingham, SCB
- GBCGD: Claygate, SRY
- GBCGE: Cameron Bridge, FIF
- GBCGF: Chingford
- GBCGG: Croggan, AGB
- GBCGH: Cranleigh, SRY
- GBCGI: Crudgington, SHR
- GBCGJ: Craighouse, Isle of Jura, AGB
- GBCGM: Cloughmills, BLY
- GBCGN: Cogenhoe, NTH
- GBCGO: Cassington, OXF
- GBCGP: Cloghan Point/Carrickfergus, CKF
- GBCGR: Cononbridge, HLD
- GBCGS: Chessington, SRY
- GBCGT: Covent Garden, WSM
- GBCGV: Chalgrove, OXF
- GBCGW: Cullingworth, BRD
- GBCGY: Congresbury, NSM
- GBCGZ: Cadgwith, CON
- GBCHA: Cheadle, SKP
- GBCHB: Chobham, SRY
- GBCHC: Checkendon, OXF
- GBCHD: Charleston, ANS
- GBCHE: Mostyn, FLN
- GBCHF: Charlestown, CON
- GBCHG: Charing, KEN
- GBCHH: Cheshunt, HRT
- GBCHI: Chigwell, ESS
- GBCHJ: Charmouth, DOR
- GBCHK: Chiswick, HNS
- GBCHL: Cholsey, OXF
- GBCHM: Chartham, KEN
- GBCHN: Charlton, BST
- GBCHO: Chilton, DUR
- GBCHP: Chipping Norton, OXF
- GBCHQ: Chale, IOW
- GBCHR: Chorley, LAN
- GBCHS: Chasetown, STS
- GBCHT: Chepstow, MON
- GBCHU: Chudleigh
- GBCHV: Chelveston, NTH
- GBCHW: Chorleywood, HRT
- GBCHX: Chellaston/Derby, DBY
- GBCHY: Crughywel (Crickhowell), POW
- GBCHZ: Chelford, CHE
- GBCIA: Crianlarich, STG
- GBCIB: Chiselborough, SOM
- GBCIC: Cross In Hand, ESX
- GBCID: Cairndow, AGB
- GBCIE: Comrie, PKN
- GBCIG: Cossington, LEC
- GBCIH: Chilworth, SRY
- GBCII: Chillington, SOM
- GBCIK: Chirk, SHR
- GBCIL: Chilmark, WIL
- GBCIM: Cardinham, CON
- GBCIN: Cinderford, GLS
- GBCIO: Conisbrough, DNC
- GBCIP: Crimplesham, NFK
- GBCIR: Cirencester, GLS
- GBCIS: Coniston, CMA
- GBCIT: Collieston, ABD
- GBCIW: Chiseldon, WIL
- GBCJY: Chailey, ESX
- GBCKA: Church Crookham, HAM
- GBCKC: Cockley Cley, NFK
- GBCKE: Cricklade, WIL
- GBCKH: Cookham, WNM
- GBCKK: Crosskirk, HLD
- GBCKL: Cookley, SFK
- GBCKM: Cockermouth, CMA
- GBCKN: Culkein, HLD
- GBCKO: Carrickmore, OMH
- GBCKP: Cockburnspath, SCB
- GBCKR: Chickerell, DOR
- GBCKS: Creeksea
- GBCKW: Brockweir, GLS
- GBCKX: Clydebank/Exeter
- GBCKY: Crosskeys, CAY
- GBCL7: Clanfield, HAM
- GBCL8: Collessie, FIF
- GBCLA: Clackmannan, CLK
- GBCLB: Castle Bytham, LIN
- GBCLC: Clay Cross, DBY
- GBCLD: Cumbernauld, NLK
- GBCLE: Cleator, CMA
- GBCLF: Cliffe, KEN
- GBCLG: Cricklewood/London, BEN
- GBCLH: Clydach, SWA
- GBCLI: Clitheroe, LAN
- GBCLJ: Claonaig, AGB
- GBCLK: Colwick, NTT
- GBCLL: Coleshill, WAR
- GBCLM: Culkein/Drumbeg, HLD
- GBCLN: Colne, LAN
- GBCLO: Colyton, DEV
- GBCLP: Clapham, LBH
- GBCLR: Coleraine, CLR
- GBCLS: Clacton-on-Sea, ESS
- GBCLT: Cheltenham, GLS
- GBCLU: Clutton, BAS
- GBCLV: Calverley, ERY
- GBCLW: Colwich, STS
- GBCLX: Callanish, SCB
- GBCLY: Clydebank, WDU
- GBCLZ: Colne, CAM
- GBCMA: Cefn-Mawr, WRX
- GBCMB: Camborne, CON
- GBCMC: Chartham Hatch, KEN
- GBCMD: Cramond, EDH
- GBCME: Cheam, SRY
- GBCMF: Camelford, CON
- GBCMG: Cambridge, CAM
- GBCMH: Chulmleigh, DEV
- GBCMI: Coombe Hill, GLS
- GBCML: Crumlin, CAY
- GBCMM: Cleobury Mortimer, SHR
- GBCMN: Commondale, NYK
- GBCMO: Saint Columb Major, CON
- GBCMP: Crombie, FIF
- GBCMR: Carmarthen
- GBCMS: Cumbrae Slip, Great Cumbrae, NAY
- GBCMT: Cramlington, NBL
- GBCMY: Cumnock, EAY
- GBCNA: Canna, Inner Hebrides, HLD
- GBCNB: Canterbury, KEN
- GBCNC: Crinan, AGB
- GBCND: Chirnside, SCB
- GBCNE: Calne, WIL
- GBCNF: Carnforth, LAN
- GBCNG: Coningsby, LIN
- GBCNH: Chineham, HAM
- GBCNI: Cannich, HLD
- GBCNK: Cannock, STS
- GBCNL: Cantley, DNC
- GBCNM: Central Mainland (Shetland), ZET
- GBCNN: Callington, CON
- GBCNP: Saint Catherine's Point, IOW
- GBCNR: Charnock Richard, LAN
- GBCNS: Carnoustie, ANS
- GBCNT: Consett, DUR
- GBCNU: Craignure, AGB
- GBCNV: Caernarfon, GWN
- GBCNW: Cornwell, OXF
- GBCNX: Cawsand, CON
- GBCNY: Chinley, DBY
- GBCNZ: Cockenzie, ELN
- GBCOA: Coalville, LEC
- GBCOB: Cobham, SRY
- GBCOD: Coalisland, DGN
- GBCOE: Clowne, DBY
- GBCOF: Coleford, SOM
- GBCOG: Coggeshall, ESS
- GBCOH: Cowdenbeath, FIF
- GBCOI: Carlton in Lindrick, NTT
- GBCOK: Crook, CMA
- GBCOL: Colchester, ESS
- GBCON: Congleton, CHE
- GBCOO: Cookstown, CKT
- GBCOP: Chilcompton, SOM
- GBCOQ: Connah's Quay, FLN
- GBCOR: Corpach, HLD
- GBCOS: Cosham, HAM
- GBCOT: Coatbridge, NLK
- GBCOU: Coulport, AGB
- GBCOV: Coverack, CON
- GBCOW: Cowes, IOW
- GBCOX: Croy, NLK
- GBCOY: Coryton, ESS
- GBCOZ: Colney Heath, ESX
- GBCPD: Chapel Saint Leonards, LIN
- GBCPF: Captain Field
- GBCPG: Cappagh, DGN
- GBCPH: Copthorne, WSX
- GBCPL: Chapel en le Frith, DBY
- GBCPM: Clopton, NTH
- GBCPN: Chippenham, WIL
- GBCPO: Compton, WBK
- GBCPP: Chapel Allerton, SOM
- GBCPR: Chipping Warden, NTH
- GBCPS: Clipstone, NTT
- GBCPT: Clipstone, CBF
- GBCPU: Capenhurst, CHW
- GBCPV: Copgrove, NYK
- GBCPW: Chapeltown, SHF
- GBCQM: Crumpsall, MAN
- GBCQQ: Cockwood
- GBCQY: Connahs Quay, FLN
- GBCR5: Cropton, NYK
- GBCRA: Carradale, AGB
- GBCRB: Crosby, SFT
- GBCRC: Church, LAN
- GBCRD: Cornhill-on-Tweed, NBL
- GBCRE: Crewe, CHE
- GBCRF: Cranfield, CBF
- GBCRG: Craigavon, CGV
- GBCRH: Cradley Heath
- GBCRI: Crick, NTH
- GBCRJ: Crail, FIF
- GBCRK: Crewkerne, SOM
- GBCRL: Croft, LEC
- GBCRM: Croughton, NTH
- GBCRN: Cromarty, HLD
- GBCRO: Croydon, CRY
- GBCRP: Cropthorne, WOR
- GBCRQ: Carno, POW
- GBCRR: Cromer, NFK
- GBCRS: Corsham, WIL
- GBCRT: Carrington, TRF
- GBCRU: Cranbourne, BRC
- GBCRV: Carlton Colville, SFK
- GBCRW: Caerwent, MON
- GBCRX: Craster
- GBCRY: Crayford, KEN
- GBCSA: Colonsay
- GBCSB: Castle Bromwich, BIR
- GBCSC: Caister on Sea
- GBCSD: Coulsdon, CRY
- GBCSE: Chelsea/London, KEC
- GBCSF: Cosford, WAR
- GBCSG: Chalfont Saint Giles, BKM
- GBCSH: Chesham, BKM
- GBCSI: Carsaig, AGB
- GBCSK: Cross Keys, CAY
- GBCSL: Chislehurst, BRY
- GBCSM: Codford Saint Mary, WIL
- GBCSN: Garston
- GBCSO: Chipping Sodbury, SGC
- GBCSP: Chalfont Saint Peter, BKM
- GBCSR: Chester, CLK
- GBCSS: Cressing, ESS
- GBCST: Chichester, WSX
- GBCSU: Cadishead, MAN
- GBCSW: Castletown, DOR
- GBCTA: Coltishall, NFK
- GBCTD: Castle Douglas, DGY
- GBCTE: Chester-le-Street, DUR
- GBCTF: Castleford, WKF
- GBCTG: Cotgrave, NTT
- GBCTH: Cleethorpes, NEL
- GBCTI: Chathill, NBL
- GBCTL: Catfield, NFK
- GBCTM: Chatham, KEN
- GBCTN: Castletown, HLD
- GBCTO: Carshalton, STN
- GBCTP: Caythorpe, LIN
- GBCTQ: Chalton, BDF
- GBCTR: Caterham, SRY
- GBCTS: Castleton, RCH
- GBCTT: Cotterstock, NTH
- GBCTU: Christchurch, CAM
- GBCTW: Cheddleton, STS
- GBCTX: Calverton, NTT
- GBCTY: Cantley, NFK
- GBCU8: Curbar, DBY
- GBCUA: Cuan Ferry, Seil, AGB
- GBCUB: Church Bay, Rathlin Island, MYL
- GBCUD: Cuddington, BKM
- GBCUE: Cushendun, MYL
- GBCUF: Cloughfold, LAN
- GBCUG: Curbridge, HAM
- GBCUH: Culham, OXF
- GBCUJ: Cumbria, NYK
- GBCUL: Cullompton
- GBCUM: Cumbraes
- GBCUN: Cullen, MRY
- GBCUP: Cupar, FIF
- GBCUR: Curlew
- GBCUS: Cushendall, MYL
- GBCUT: Cutnall Green, WOR
- GBCUV: Cullivoe, Yell, ZET
- GBCVA: Colintraive, AGB
- GBCVE: Cove, SCB
- GBCVF: Caversfield, OXF
- GBCVG: Chevington, SFK
- GBCVI: Cove (Leith), EDH
- GBCVL: Clovelly, CON
- GBCVM: Cavenham, SFK
- GBCVR: Caversham, RDG
- GBCVT: Coventry, COV
- GBCVW: Convoys Wharf
- GBCVY: Cheveley, CAM
- GBCW2: Duloe, CON
- GBCW9: Cornwall, DEV
- GBCWA: Conwy (Conway), CWY
- GBCWB: Crowborough, ESX
- GBCWD: Cowden, KEN
- GBCWE: Chilwell, NTT
- GBCWF: Cwm Ffrwd-Oer
- GBCWG: Cowling, NYK
- GBCWH: West Chiltington, WSX
- GBCWI: Cowie, STG
- GBCWL: Colwall, HEF
- GBCWM: Cwmbran, TOF
- GBCWN: Charlestown, FIF
- GBCWO: Cousley Wood, ESX
- GBCWR: Chelworth, WIL
- GBCWS: Cawston, NFK
- GBCWT: Crowthorne, BRC
- GBCWX: Castlewellan, DOW
- GBCWY: Crawley, WSX
- GBCXB: Coxbench, DBY
- GBCXM: Cromford, DBY
- GBCXN: Croxton, CAM
- GBCXT: Cottingham
- GBCXX: Cranford, DEV
- GBCXY: Cosby, LEC
- GBCYA: Cheslyn Hay, STS
- GBCYB: Cullybackey, ANT
- GBCYD: Clynderwen, PEM
- GBCYE: Claythorpe, LIN
- GBCYG: Claydon, OXF
- GBCYH: Cherry Hinton, CAM
- GBCYK: Corley
- GBCYL: Crays Hill, ESS
- GBCYM: Clyst Saint Mary, DEV
- GBCYN: Cairnryan, DGY
- GBCYO: Clayton, LAN
- GBCYP: Clydeport, NAY
- GBCYS: Caerwys, FLN
- GBCYW: Cynwyd, DEN
- GBCYY: Colwyn Bay (Bae Colwyn), CWY
- GBCZT: Chard, SOM
- GBCZV: Clunbury, SHR
- GBCZZ: Constantine, CON
- GBDAC: Ballindalloch, MRY
- GBDAG: Dagenham, BDG
- GBDAL: Dalton in Furness, CMA
- GBDAT: Datchet, WNM
- GBDAV: Davenham
- GBDAW: Dawley, TFW
- GBDBD: Debden, ESS
- GBDBE: Eggborough, NYK
- GBDBF: Fenny Compton, WAR
- GBDBG: Ardbeg
- GBDBH: Fotherby, LIN
- GBDBI: Denbigh, DEN
- GBDBJ: Galgate, LAN
- GBDBK: Garvagh
- GBDBL: Georgetown, RFW
- GBDBN: Debenham, SFK
- GBDBP: Dibden Purlieu, HAM
- GBDBR: Dunbar, ELN
- GBDBS: Derbyshire, DBY
- GBDBT: Dumbarton, WDU
- GBDBY: Dulas Bay, AGY
- GBDCO: Dunscroft, YOR
- GBDCP: Drumchapel, GLG
- GBDDD: Dundonald, SAY
- GBDDE: Darley Dale, DBY
- GBDDG: Doveridge, DBY
- GBDDH: Danderhall, MLN
- GBDDL: Dudley, DUD
- GBDDM: Dundrum, DOW
- GBDDN: Dundrennan, DGY
- GBDDO: Deddington, OXF
- GBDDT: Durward Dauntless
- GBDEA: Delabole, CON
- GBDEB: Denby, DBY
- GBDEC: Draperstown
- GBDED: Eastchurch, KEN
- GBDEI: Deighton, YOR
- GBDEL: Delph, OLD
- GBDEM: Drem, ELN
- GBDEN: Denton, TAM
- GBDEP: Deptford, LEW
- GBDER: Dereham, NFK
- GBDES: Desford, FLN
- GBDET: Denton, ESX
- GBDEW: Wrafton, DEV
- GBDEX: Deal, KEN
- GBDEY: Durley, HAM
- GBDFD: Dartford, KEN
- GBDFI: Driffield, GLS
- GBDFN: Foston, DBY
- GBDFO: Pavenham, BDF
- GBDFR: Dunfermline, FIF
- GBDGE: Dargate, KEN
- GBDGH: Doddinghurst, ESS
- GBDGJ: Deeping Saint James, LIN
- GBDGL: Douglas, SLK
- GBDGN: Dungannon, DGN
- GBDGO: Donaghmore
- GBDGR: Dunton Green, KEN
- GBDGT: Dunnington, ERY
- GBDGU: Dunning, PKN
- GBDGV: Dungiven, LMV
- GBDHD: Donaghadee, ARD
- GBDHG: Deanshanger, NTH
- GBDHL: Dunholme, LIN
- GBDHM: Denham, BKM
- GBDHN: Dilhorne, STS
- GBDHR: Dorchester, DOR
- GBDHS: Downhead
- GBDHT: Dunston Heath, STS
- GBDIB: Dibden, HAM
- GBDID: Didcot, OXF
- GBDIG: Dalbeattie, DGY
- GBDIH: Dishig, AGB
- GBDIN: Dingle, LIV
- GBDIO: Dinton, WIL
- GBDIS: Diss, NFK
- GBDIT: Ditchingham, NFK
- GBDIW: Dingwall, HLD
- GBDKG: Dorking, SRY
- GBDKH: Killamarsh, DBY
- GBDKQ: Docking, NFK
- GBDKW: Dunkeswell, DEV
- GBDLG: Dolgellau, GWN
- GBDLH: Dudley Hill, BRD
- GBDLK: Dalkeith, MLN
- GBDLL: Dullingham, CAM
- GBDLR: Dollar, CLK
- GBDLS: Dalston, HCK
- GBDLT: Dalston, CMA
- GBDLW: Hadlow, KEN
- GBDLX: Dalry, EDH
- GBDLY: Bradley, NYK
- GBDMB: Boddam, ABD
- GBDMC: Dymock, GLS
- GBDME: Denmead, HAM
- GBDMO: Dromore, BNB
- GBDMQ: Drumquin, OMH
- GBDMR: Dalmuir, RFW
- GBDMT: Dechmont, WLN
- GBDMY: Dufftown, MRY
- GBDNB: Danbury, ESS
- GBDND: Riverside Park Apt/Dundee, DND
- GBDNE: Dunster, SOM
- GBDNF: Dunrossness and Fair Isle, ZET
- GBDNG: Donnington, SHR
- GBDNH: Denholme, BRD
- GBDNN: Denton, NFK
- GBDNO: Donaghcloney, ARM
- GBDNQ: Dean Quarry, CON
- GBDNR: Dunsford
- GBDNS: Durness, HLD
- GBDNT: Doonfoot, SAY
- GBDNU: Dunoon, AGB
- GBDNV: Denver, NFK
- GBDNW: Dunwich, SFK
- GBDNY: Denny, FAL
- GBDOC: Dornoch, HLD
- GBDOE: Dore, SHF
- GBDOG: Doddington, CAM
- GBDOL: Dolgarrog, CWY
- GBDON: Doncaster, DNC
- GBDOR: Ballydorn, DOW
- GBDOS: Dale Roads
- GBDOT: Dorrington, SHR
- GBDOU: Doune
- GBDOW: Downham Market, NFK
- GBDOY: Dolwyddelan, CWY
- GBDPC: Deepcut, SRY
- GBDQF: Dukinfield, TAM
- GBDR3: Drymen, STG
- GBDRA: Dry Drayton, CAM
- GBDRD: Dordon, WAR
- GBDRE: Dunure
- GBDRF: Driffield, ERY
- GBDRG: Drighlington, LDS
- GBDRH: Durham, DUR
- GBDRL: Darlington, DUR
- GBDRM: Drummore, DGY
- GBDRN: Dronfield, DBY
- GBDRO: Droitwich, WOR
- GBDRR: Durrington, WSX
- GBDRS: Darlaston, WLL
- GBDRT: Dinnington, ROT
- GBDRX: Drax, NYK
- GBDRY: Droylsden, TAM
- GBDS2: Daresbury, HAL
- GBDSA: Dersingham, NFK
- GBDSB: Desborough, NTH
- GBDSC: Seaton Carew, HPL
- GBDSE: Deeside, CHW
- GBDSF: Dunsfold, SRY
- GBDSI: Dairsie, FIF
- GBDSK: Dunseverick, ANT
- GBDSL: Disley, SKP
- GBDSN: Balderstone, LAN
- GBDSO: Densole, KEN
- GBDSQ: Deeping St Nicholas, LIN
- GBDSS: Dungeness, KEN
- GBDST: Duston, NTH
- GBDSV: Davidstow, CON
- GBDSW: Widford, HRT
- GBDSX: Hibaldstow, NLN
- GBDSY: Norton Disney
- GBDTE: Dunstable, CBF
- GBDTF: Dunstaffnage, AGB
- GBDTG: Dartington
- GBDTH: Ditchling, ESX
- GBDTI: Detling, KEN
- GBDTM: Dartmouth
- GBDTN: Dunston, GAT
- GBDTO: Darton, BNS
- GBDTR: Dorchester, OXF
- GBDTT: Ditton, KEN
- GBDU5: Dunkirk, KEN
- GBDUB: Dunblane, STG
- GBDUC: Dunchurch, WAR
- GBDUD: Dundonald, BFS
- GBDUE: Dunbeath, HLD
- GBDUF: Duffield, DBY
- GBDUL: Dundonald, CSR
- GBDUM: Dumfries, DGY
- GBDUN: Dundee, DND
- GBDUO: Burnopfield, DUR
- GBDUR: Dursley, GLS
- GBDUS: Duns, SCB
- GBDUT: Drumintee, ARM
- GBDUV: Dunvant, SWA
- GBDUY: Dunmurry, LSB
- GBDVI: Dervaig, AGB
- GBDVN: Dunvegan, HLD
- GBDVO: Dulverton, SOM
- GBDVP: Devonport
- GBDVQ: Dovercourt, ESS
- GBDVR: Dover, KEN
- GBDVS: Devonside, CLK
- GBDVY: Daventry, NTH
- GBDVZ: Devizes, WIL
- GBDWA: Dowlais, MTY
- GBDWC: Dulwich
- GBDWD: Downend, IOW
- GBDWE: Bradwell, MIK
- GBDWH: Dodworth, BNS
- GBDWI: Dalwhinnie, HLD
- GBDWK: Downpatrick, DOW
- GBDWL: Bradwell Waterside, ESS
- GBDWN: Darwen, LAN
- GBDWT: Downton, WIL
- GBDWY: Dewsbury, KIR
- GBDXF: Duxford, CAM
- GBDXO: Droxford, HAM
- GBDXY: Derby, DBY
- GBDYB: Dalgety Bay, FIF
- GBDYC: Dyce, ABE
- GBDYF: Daylesford, GLS
- GBDYL: Derrylin, FER
- GBDYN: Ardyne, AGB
- GBDYR: Dwyran, AGY
- GBDYS: Dysart, FIF
- GBDYT: Draycott, GLS
- GBE9X: Manuden, ESS
- GBEAA: Easdale, Seil, AGB
- GBEAD: East Dereham, NFK
- GBEAH: Rackheath, NFK
- GBEAI: East Linton, ELN
- GBEAL: Eastleigh, DEV
- GBEAM: Eastham, LIV
- GBEAN: Easton, CAM
- GBEAO: Easton, LIN
- GBEAR: Earls Barton, NTH
- GBEAS: East Malling, SRY
- GBEAT: Eastleigh, HAM
- GBEAW: Eastburn, BRD
- GBEAY: Eastry, KEN
- GBEBB: Ebbw Vale, BGW
- GBEBD: West Boldon, STY
- GBEBF: East Bedfont/London, HNS
- GBEBG: Emborough, SOM
- GBEBL: East Boldon, STY
- GBEBO: Eastbourne, ESX
- GBEBR: Selborne, HAM
- GBEBT: East Brent, SOM
- GBEBW: East Barkwith, LIN
- GBEBY: Exbury, HAM
- GBECA: Echt, ABD
- GBECC: Ecclesfield, SHF
- GBECD: East Claydon, BKM
- GBECH: Eccleshall, SHF
- GBECK: Eckington, WOR
- GBECO: Earls Colne, ESS
- GBECS: Eccles, SLF
- GBECT: Eccleston, SHN
- GBECW: East Cowes, IOW
- GBEDB: Enderby, LEC
- GBEDE: Edenbridge, KEN
- GBEDG: Edgware, HRW
- GBEDI: Edinburgh, EDH
- GBEDL: East Ardsley, LDS
- GBEDM: Edmonton, HRY
- GBEDN: Edwalton, NTT
- GBEDO: Edington, SOM
- GBEDT: East Ham, NWM
- GBEDU: East Dulwich, SWK
- GBEDW: Edwinstowe, NTT
- GBEDY: Eardisley, HEF
- GBEDZ: Edzell, ANS
- GBEEB: Bewdley, WOR
- GBEEE: Chieveley, WBK
- GBEEH: Mauchline, EAY
- GBEEN: Shobdon, HEF
- GBEER: Deerness, ORK
- GBEES: Beeston, NFK
- GBEEW: Earlestown, SHN
- GBEFD: Eastfield, NYK
- GBEFL: Edenfield, LAN
- GBEFO: Sefton, SFT
- GBEGA: Effingham, SRY
- GBEGD: East Grinstead, WSX
- GBEGG: Egglescliffe, STT
- GBEGH: Egham, SRY
- GBEGI: Egilsay, ORK
- GBEGL: Eaglescliffe, STT
- GBEGN: Elvington, YOR
- GBEGO: Elgol, Isle of Skye, HLD
- GBEGS: East Goscote, LCE
- GBEGT: Egremont, CMA
- GBEGY: Easton Grey, WIL
- GBEHA: East Harling, NFK
- GBEHE: Castle Hedingham, ESS
- GBEHF: East Hanningfield, ESS
- GBEHL: East Hoathly, ESX
- GBEHM: Bentham, GLS
- GBEHS: East Taphouse, CON
- GBEHY: East Hyde, CBF
- GBEIC: Breich, WLN
- GBEIG: Easton-in-Gordano, NSM
- GBEIL: Sheildaig
- GBEIN: Eling, HAM
- GBEIR: Weir, LAN
- GBEKB: East Kilbride, SLK
- GBEKE: East Leake, NTT
- GBEKI: Erskine, RFW
- GBEKM: Ellerker, ERY
- GBEKN: Eisken, ELS
- GBEKR: Beck Row, SFK
- GBELB: Ellenabeich, Seil, AGB
- GBELC: Elsecar, ROT
- GBELD: Welland, WOR
- GBELE: Elsenham, ESS
- GBELG: Elgin, MRY
- GBELH: Elmesthorpe, LEC
- GBELI: Elie, FIF
- GBELK: Elkesley, NTT
- GBELL: Ellesmere Port, CHW
- GBELM: Ellesmere, SHR
- GBELN: Ealing, EAL
- GBELO: Ellistown, LEC
- GBELS: Elsham, NLN
- GBELT: Ellington, CAM
- GBELV: Elvington, NYK
- GBELY: Ely, CAM
- GBEMA: East Midlands Apt, LEC
- GBEMB: Emberton, BKM
- GBEME: East Mersea
- GBEMH: Beamish, DUR
- GBEML: Helmsley, NYK
- GBEMN: Hempton, NFK
- GBEMO: East Molesey, SRY
- GBEMP: Elm Park, HAV
- GBEMR: Lee Moor, DEV
- GBEMS: Emsworth, HAM
- GBEMT: Emneth, NFK
- GBENB: Tenbury, WOR
- GBEND: Elland, CLD
- GBENF: Enfield, ENF
- GBENG: Englefield Green, SRY
- GBENH: Beenham, WBK
- GBENI: Essendine, LIN
- GBENK: Enniskillen, FER
- GBENN: Pennan, ABD
- GBENO: Endon, STS
- GBENR: Eastnor, WOR
- GBENS: Eynsford, KEN
- GBENT: Brent
- GBENW: Easingwold, NYK
- GBEOI: Eday, ORK
- GBEOL: Ellon, ABD
- GBEON: Seaton, DEV
- GBEPH: Empingham, RUT
- GBEPN: East Pennard, SOM
- GBEPP: Epping, ESS
- GBEPS: Epsom, SRY
- GBEPW: Epworth, LIN
- GBERB: Earby, LAN
- GBERD: Erdington, BIR
- GBERE: Stamford Bridge, ERY
- GBERF: East Retford, NTT
- GBERH: Earith, CAM
- GBERI: Erith, BEX
- GBERL: Earls Court, KEC
- GBERN: Fearn, HLD
- GBERO: Errol, PKN
- GBERR: Berriedale, HLD
- GBERS: Earlston, SCB
- GBERT: Saint Erth, CON
- GBERW: Earlswood, WAR
- GBERY: Eversley, HAM
- GBESA: Eastergate, WSX
- GBESB: East Bridgford, NTT
- GBESC: Eaton Socon, BDF
- GBESD: Willesden, BEN
- GBESE: Swestern, LEC
- GBESG: Easington, DUR
- GBESH: Shoreham-by-Sea, WSX
- GBESI: Hampton Wick, RIC
- GBESJ: Burton on Trent, DBY
- GBESK: Eishken, ELS
- GBESL: Eastcote, HIL
- GBESM: Earl Soham, SFK
- GBESN: Beeston, ERY
- GBESO: Enstone, OXF
- GBESR: Esher, SRY
- GBESS: Eshaness, ZET
- GBESW: East Wellow, HAM
- GBESX: Essex, ESS
- GBESY: East Horsley, SRY
- GBET2: Dalmellington, EAY
- GBETA: Etchingham, ESX
- GBETB: Eaton Bishop, HEF
- GBETD: Elstead, SRY
- GBETE: Edenthorpe, DNC
- GBETG: Eastrington, ERY
- GBETH: Bethesda, GWN
- GBETL: Westlinton, CMA
- GBETM: Westham, ESX
- GBETN: Eton, WNM
- GBETO: Eaton, CHW
- GBETP: East Peckham, KEN
- GBETR: Elstree, HRT
- GBETT: Etrick Field
- GBETY: Betley, STS
- GBEVC: Evercreech, SOM
- GBEVE: Evesham, WOR
- GBEVL: Liverton, RCC
- GBEVT: Evanton, HLD
- GBEVY: Eversley, BKM
- GBEWD: Eastwood, NTT
- GBEWE: Ewell, SRY
- GBEWH: Elworth, CHE
- GBEWL: Elmswell, SFK
- GBEWM: Ewelme, OXF
- GBEWN: Newton, CAM
- GBEWO: Eastwood, ESS
- GBEWS: New Mills, DBY
- GBEWT: East Wittering, WSX
- GBEWU: Ewhurst, SRY
- GBEXE: Exeter
- GBEXM: Exmouth
- GBEXN: Exning, CAM
- GBEXT: Euxton, LAN
- GBEYA: Eyam, DBY
- GBEYE: Eye, SFK
- GBEYH: Eynsham, OXF
- GBEYM: Eyemouth, SCB
- GBFAB: Fairbourne, GWN
- GBFAI: Fairisle, ZET
- GBFAL: Falmouth, CON
- GBFAM: Falmer, ESX
- GBFAN: Faringdon, OXF
- GBFAR: Farnham, SRY
- GBFAS: Faslane, AGB
- GBFAT: Farcet, CAM
- GBFAU: Fort Augustus, HLD
- GBFAV: Faversham, KEN
- GBFAW: Fawley, HAM
- GBFBG: Felbridge, SRY
- GBFBH: Flamborough, ERY
- GBFBN: Fulbourn, CAM
- GBFBO: Farnborough, HAM
- GBFBP: Fonthill Bishop, WIL
- GBFBU: Fishbourne, IOW
- GBFBY: Flimby, CMA
- GBFCB: Fochabers, MRY
- GBFCK: Feock, CON
- GBFCL: Finchley, LND
- GBFCT: Frampton Cotterell, SGC
- GBFDH: Fordhouses, WLV
- GBFDK: Fosdyke, LIN
- GBFDL: Freeland, OXF
- GBFDM: Fordham, CAM
- GBFDN: Ferndown, DOR
- GBFDO: Findon, ABD
- GBFDR: Farnham, DOR
- GBFDS: Frodsham, CHW
- GBFDU: Fordoun, ABD
- GBFDY: Fradley, STS
- GBFE6: Felsted
- GBFEA: Fetlar
- GBFEB: Ferrybridge, WKF
- GBFED: Hadfield, DBY
- GBFEE: Fairlie, NAY
- GBFEG: Feering, ESS
- GBFEI: Felbrigg, NFK
- GBFEL: Feltwell, NFK
- GBFEM: Feltham, HNS
- GBFEN: Fenton, STS
- GBFEO: Feolin Ferry, AGB
- GBFEP: Felpham, WSX
- GBFER: Fersfield, NFK
- GBFET: Fleet, HAM
- GBFFD: Falfield, SGC
- GBFFE: Ffestiniog, GWN
- GBFFH: Felinfach, CGN
- GBFFO: Fairford, GLS
- GBFFR: Strathpeffer, HLD
- GBFGB: Fordingbridge, HAM
- GBFGD: Farringdon, DEV
- GBFGH: Froghall, STS
- GBFGN: Fawkham Green, KEN
- GBFHA: Fernham, OXF
- GBFHM: Fareham, HAM
- GBFHO: Fakenham, NFK
- GBFID: Findochty, MRY
- GBFIE: Fair Isle, ZET
- GBFIH: Fisherrow/Musselburgh, ELN
- GBFIN: Findhorn, MRY
- GBFIO: Fionnphort, Isle of Mull, AGB
- GBFIR: Findern, DBY
- GBFIS: Fishguard, PEM
- GBFKH: Friockheim, ANS
- GBFKK: Falkirk, FAL
- GBFKL: Falkland, FIF
- GBFKM: Fakenham, NFK
- GBFKY: Fleckney, LEC
- GBFLA: Flackwell Heath, BKM
- GBFLB: Filby, NFK
- GBFLC: Flitwick, CBF
- GBFLE: Fleetwood, LAN
- GBFLF: Fulford, NYK
- GBFLG: Farleigh, SRY
- GBFLH: Flotta, ORK
- GBFLI: Flint, FLN
- GBFLK: Flookburgh, CMA
- GBFLL: Felling, GAT
- GBFLM: Fulham, WND
- GBFLN: Flaxton, NYK
- GBFLO: Farleton, LAN
- GBFLR: Flore, NTH
- GBFLS: Failsworth, OLD
- GBFLT: Farlington, NYK
- GBFLU: Flushing, CON
- GBFLW: Flixborough, NLN
- GBFLX: Flixton, TRF
- GBFLY: Filey, NYK
- GBFME: Frome, SOM
- GBFMF: Fulmar Field
- GBFMR: Farnham Royal, BKM
- GBFMW: Flimwell, ESX
- GBFMY: Frimley, SRY
- GBFNC: Finchampstead, WOK
- GBFND: Finedon, NTH
- GBFNE: Farthingstone, NTH
- GBFNF: Felinfach, POW
- GBFNH: Fishnish, Isle of Mull, AGB
- GBFNK: Frankley, WOR
- GBFNL: Finningley, DNC
- GBFNO: Findon, WSX
- GBFNR: Fetternear, ABD
- GBFNT: Finnart, PKN
- GBFNU: Fernhurst, WSX
- GBFNV: Foinaven
- GBFNW: Farnworth, BOL
- GBFOA: Foula
- GBFOD: Ford, WSX
- GBFOE: Forest Row, WSX
- GBFOF: Forfar, ANS
- GBFOG: Five Oak Green, KEN
- GBFOH: Ford, STS
- GBFOI: Foindlemore - Loch Glendhu, HLD
- GBFOK: Four Oaks, ESX
- GBFOL: Folkestone, KEN
- GBFON: Forsinard, HLD
- GBFOR: Forth, SLK
- GBFOS: Foston, DER
- GBFOU: Four Ashes
- GBFOW: Frisby on the Wreake, LEC
- GBFOY: Fowey, CON
- GBFPS: Fishponds, BST
- GBFRA: Framlingham, SFK
- GBFRB: Fraserburgh, ABD
- GBFRC: Farnham Common, BKM
- GBFRD: Ferndale, RCT
- GBFRE: Fowlmere, ESX
- GBFRG: Forest Gate, NWM
- GBFRH: Fingringhoe, ESS
- GBFRI: Frinton-on-Sea, ESS
- GBFRL: Fritchley, DBY
- GBFRM: Formby, SFT
- GBFRN: Frenchay, SGC
- GBFRO: Fratton, POR
- GBFRR: Farringdon
- GBFRS: Forres, MRY
- GBFRT: Frant, ESX
- GBFRV: Frampton on Severn, GLS
- GBFRW: Freshwater, PEM
- GBFRX: Ferrybridge, DOR
- GBFRY: Ferryhill, DUR
- GBFRZ: Frizington, CMA
- GBFSE: Fossebridge, GLS
- GBFSH: Felmersham, BDF
- GBFSN: Forest Town, NTT
- GBFST: Full Sutton, ERY
- GBFSY: Friskney, LIN
- GBFTC: Fetcham, SRY
- GBFTF: Fforest-Fach, SWA
- GBFTH: Featherstone, WKF
- GBFTI: The Forties, DBY
- GBFTM: Frettenham, NFK
- GBFTN: Farington, LAN
- GBFTO: Fourstones, NBL
- GBFTR: Fortrose, HLD
- GBFTS: Frinton On Sea, ESS
- GBFTU: Fetterangus, ABD
- GBFTW: Fittleworth, WSX
- GBFUC: Waterfoot, IOW
- GBFUK: Warboys, CAM
- GBFUL: Fulmer, BKM
- GBFUN: Foulness Island, ESS
- GBFUR: Furnace, AGB
- GBFUU: Thurnscoe, BNS
- GBFUW: Fulwood, SHF
- GBFWC: Fenwick, EAY
- GBFWD: Fawdon, NET
- GBFWE: Freshwater East, PEM
- GBFWK: Fawham Green, KEN
- GBFWL: Fontwell, WSX
- GBFWM: Fort William, HLD
- GBFXF: Foxton, LEC
- GBFXT: Felixstowe, SFK
- GBFXY: Flaxby, NYK
- GBFY3: Fintry, STG
- GBFYD: Ferryside, CMN
- GBFYT: Faygate, WSX
- GBFZE: Furzebrook, DOR
- GBFZO: Filton
- GBFZY: Fazeley, STS
- GBGAD: Garelochhead
- GBGAE: Graemsay, ORK
- GBGAG: Gamlingay, CAM
- GBGAH: Galashiels, SCB
- GBGAI: Gainsborough, LIN
- GBGAL: Great Alne, WAR
- GBGAM: Great Amwell, HRT
- GBGAN: Boat of Garten, HLD
- GBGAR: Gairloch, HLD
- GBGAS: Galmisdale, Eigg, HLD
- GBGAT: Gateshead, GAT
- GBGAV: Garve, HLD
- GBGAW: Gaerwen, GWN
- GBGAY: Gaydon, WAR
- GBGBD: Gilberdyke, ERY
- GBGBF: Great Bridgeford, STS
- GBGBG: Great Broughton, NYK
- GBGBH: Grandborough, WAR
- GBGBI: Great Bardfield, ESS
- GBGBK: Great Bookham, SRY
- GBGBL: Great Billing, NTH
- GBGBN: Gisburn, LAN
- GBGBO: Boughton, NTT
- GBGBR: Gorebridge, MLN
- GBGBS: Goring-by-Sea, WSX
- GBGBT: Great Barton, SFK
- GBGBU: Great Budworth, CHW
- GBGBV: Glenbervie, ABD
- GBGBW: Gobowen, SHR
- GBGBX: Great Braxted, ESS
- GBGBY: Great Bentley, ESS
- GBGCH: Great Chishill, CAM
- GBGCS: Great Coates, NEL
- GBGCT: Great Coates, YOR
- GBGCU: Golden Cross, HEF
- GBGCX: Greencroft, DUR
- GBGDB: Guardbridge, FIF
- GBGDD: Guildford, SRY
- GBGDF: Great Driffield, ERY
- GBGDG: Golders Green, BNE
- GBGDK: Gedney Dyke, LIN
- GBGDL: Grindale, ERY
- GBGDM: Godmanchester, CAM
- GBGDN: Gardenstown, ABD
- GBGDO: Grendon, WAR
- GBGDP: Gidea Park, HAV
- GBGDR: Gildersome, LDS
- GBGDS: Godstone, SRY
- GBGDT: Geddington, NTH
- GBGEA: Greasbrough, ROT
- GBGEE: Greenlaw, SCB
- GBGEN: Great Notley, ESS
- GBGET: Great Easton, ESS
- GBGEW: Great Horwood, BKM
- GBGFD: Greenfield, BDF
- GBGFF: Giffnock, ERW
- GBGFG: Glenfarg, PKN
- GBGFH: Gosforth, NET
- GBGFI: Greenfield, FLN
- GBGFM: Graffham, WSX
- GBGFN: Glenfinnan, HLD
- GBGFO: Goff's Oak, HRT
- GBGFR: Greenford, EAL
- GBGFT: Gosforth, CMA
- GBGGC: Glengarnock, NAY
- GBGGD: Great Gaddesden, HRT
- GBGGI: Garrigill, CMA
- GBGGR: Gelligaer, CAY
- GBGGT: Great Addington, NTH
- GBGGU: Grangemounth, FAL
- GBGGV: Gargrave, NYK
- GBGHA: Garth, BGE
- GBGHF: Gatehouse of Fleet, DGY
- GBGHH: Great Houghton, NTH
- GBGHI: Greenhithe, KEN
- GBGHN: Guyhirn, CAM
- GBGHO: Beighton, NFK
- GBGHR: Clogher
- GBGHW: Great Haywood, STS
- GBGHY: Great Haseley, OXF
- GBGIA: Gilsland, NBL
- GBGIG: Ardminish, Gigha Island, AGB
- GBGIH: High Roding, ESS
- GBGIL: Gillingham, MDW
- GBGIM: Grimston, NFK
- GBGIR: Girvan, SAY
- GBGIS: Garlieston, DGY
- GBGIV: Govilon, MON
- GBGL9: Poulton, GLS
- GBGLA: Glenarm, ANT
- GBGLC: Glenluce, DGY
- GBGLD: Glasson Dock, LAN
- GBGLE: Glemsford, SFK
- GBGLF: Glenfield, LEC
- GBGLG: Glenuig, HLD
- GBGLH: Gareloch, AGB
- GBGLK: Glasshoughton, WKF
- GBGLL: Gillingham, DOR
- GBGLN: Glanton, NBL
- GBGLO: Gloucester, GLS
- GBGLP: Golspie, HLD
- GBGLS: Glenrothes, FIF
- GBGLT: Galston, EAY
- GBGLW: Glasgow, GLG
- GBGLY: Hellingly, ESX
- GBGMA: Glenmallan, AGB
- GBGML: Great Malvern, WOR
- GBGMN: Great Milton, OXF
- GBGMR: Gartmore, STG
- GBGMS: Gomersal, BRD
- GBGMT: Gamston, NTT
- GBGMU: Greenmount, BUR
- GBGMY: Grimsay, ELS
- GBGNC: Greencastle, DOW
- GBGND: Gwynedd, GWN
- GBGNE: Emersons Green, BST
- GBGNG: Goring, OXF
- GBGNL: Glenelg, HLD
- GBGNM: Glenmavis, NLK
- GBGNQ: Gunthorpe, NFK
- GBGNS: Grenoside, SHF
- GBGNW: Greenwich, LEW
- GBGOA: Great Oakley, ESS
- GBGOC: Llanbedrgoch, AGY
- GBGOD: Godalming, SRY
- GBGOF: Gorefield, CAM
- GBGOH: Goxhill, NLN
- GBGOI: Goodwick, PEM
- GBGOL: Golborne, WGN
- GBGON: Gordon, SCB
- GBGOO: Goole, ERY
- GBGOQ: Gorseinon, SWA
- GBGOR: Gorran Haven, CON
- GBGOS: Gosport, HAM
- GBGOU: Goudhurst, KEN
- GBGOW: Gowerton, SWA
- GBGOX: Goxhill, NEL
- GBGOY: Grantown-on-Spey, HLD
- GBGPE: Grimesthorpe, SHF
- GBGPO: Guide Post, NBL
- GBGQY: Gaerwen, AGY
- GBGRA: Gransden, CAM
- GBGRB: Great Blakenham, SFK
- GBGRC: Gerrards Cross, BKM
- GBGRD: Great Dunmow, ESS
- GBGRE: Gurney Slade
- GBGRF: Garforth, LDS
- GBGRG: Grangemouth, FAL
- GBGRH: Great Harwood, LAN
- GBGRI: Grimsargh, LAN
- GBGRJ: Grovehurst Jetty/Sittingbourne, KEN
- GBGRK: Greenock, IVC
- GBGRL: Gorleston-on-Sea, NFK
- GBGRM: Great Missenden, BKM
- GBGRN: Granton, EDH
- GBGRO: Groomsport, NDN
- GBGRP: Gristhorpe, NYK
- GBGRR: Great Ryburgh, NFK
- GBGRS: Great Sankey, WRT
- GBGRT: Gretna, DGY
- GBGRU: Grutness, ZET
- GBGRV: Garvald, ELN
- GBGRW: Grove Port, NTT
- GBGRX: Great Gransden, CAM
- GBGRY: Glastonbury, SOM
- GBGRZ: Great Shelford, CAM
- GBGSA: Glensanda, HLD
- GBGSB: Guisborough, RCC
- GBGSD: Grange-over-Sands, CMA
- GBGSF: Gosfield, ESS
- GBGSG: Great Stauhgton, CAM
- GBGSH: Gomshall, SRY
- GBGSL: Great Saling, ESS
- GBGSN: Galston, EAY
- GBGSP: Glossop, DBY
- GBGSR: Aldersgate, LND
- GBGSS: Gillmoss, LIV
- GBGST: Gastard, WIL
- GBGSU: Great Sutton, CHW
- GBGSY: Grimsby, NEL
- GBGTA: Garstang, LAN
- GBGTB: Great Bridge, DEV
- GBGTC: Gartcosh, NLK
- GBGTD: Great Shefford, WBK
- GBGTF: Whitefield, BUR
- GBGTG: Allington, LIN
- GBGTH: Greatham, HAM
- GBGTL: Greetland, CLD
- GBGTM: Grantham, LIN
- GBGTN: Garston, LIV
- GBGTO: Great Torrington
- GBGTP: Goldthorpe, BNS
- GBGTR: Great Brickhill, BKM
- GBGTS: Great Snoring, NFK
- GBGTT: Great Tey, ESS
- GBGTW: Longtown, HEF
- GBGTY: Great Yarmouth, NFK
- GBGUD: Gourdon, ABD
- GBGUI: Guiseley, LDS
- GBGUM: Gunnislake, CON
- GBGUN: Gunn, DEV
- GBGUR: Gourock, IVC
- GBGUS: Gunness, NLN
- GBGUT: Gutcher, Yell, ZET
- GBGUW: Gunness Wharf, NLN
- GBGV2: Graveley, HRT
- GBGVA: Govan, GLG
- GBGVL: Gulval, CON
- GBGVO: Goveton, DEV
- GBGVS: Gravesend, KEN
- GBGVY: Glenavy, ANT
- GBGWG: Great Wakering, ESS
- GBGWK: Gweek, CON
- GBGWN: Grangetown, RCC
- GBGWR: Gilwern, MON
- GBGWY: Great Wyrley, STS
- GBGXH: Goxhill, LIN
- GBGYD: Great Yeldham, ESX
- GBGYL: Argyll
- GBGYN: Glyn Neath
- GBGYS: Grays, ESS
- GBGYT: Grayshott, SRY
- GBGZB: Glazebury, WRT
- GBGZL: Giltbrook, NTT
- GBGZT: Grassington, NYK
- GBGZY: Grazeley, WOK
- GBHA2: Ashley, HAM
- GBHAA: Harraby, CMA
- GBHAB: Halbeath, FIF
- GBHAC: Harlech, GWN
- GBHAD: Haddington, ELN
- GBHAE: Hale, HAL
- GBHAF: Hereford, HEF
- GBHAG: Halton Gill, NYK
- GBHAH: Haywards Heath, WSX
- GBHAI: Hailsham, ESX
- GBHAK: Harle Syke, LAN
- GBHAL: Haverhill, SFK
- GBHAM: Hamble, HAM
- GBHAN: Hatton, DBY
- GBHAO: Hanworth, HNS
- GBHAP: Hapton, LAN
- GBHAR: Hardley, HAM
- GBHAS: Harleston, NFK
- GBHAT: Hatfield, HRT
- GBHAU: Hartburn, STT
- GBHAV: Havant, HAM
- GBHAW: Hadley Wood
- GBHAX: Hauxton, CAM
- GBHAY: Hayle, CON
- GBHAZ: Hartford, CHW
- GBHBC: Husborne Crawley, BDF
- GBHBD: Haydon Bridge, NBL
- GBHBE: High Bentham, NYK
- GBHBG: Hebden Bridge, CLD
- GBHBH: Hillsborough, LSB
- GBHBK: Hest Bank, LAN
- GBHBN: Hurstburne Tarrant, HAM
- GBHBO: Honeybourne, WOR
- GBHBP: Hampton Bishop, HRT
- GBHBR: Hambridge, SOM
- GBHBS: Humberston, NEL
- GBHBT: Hambleton, LAN
- GBHBU: Hatch Beauchamp, SOM
- GBHBW: Handsworth, BIR
- GBHBX: Holbury, HAM
- GBHBY: Hellaby, ROT
- GBHCA: Holton le Clay, LIN
- GBHCE: Hucclecote, GLS
- GBHCF: Highcliffe, DOR
- GBHCH: Holme Chapel, LAN
- GBHCK: Hackney, HCK
- GBHCN: Hitchin, HRT
- GBHCY: Hockley, ESS
- GBHDB: Hilton/Derby, DBY
- GBHDC: Hardwick, CAM
- GBHDD: Howdendyke, ERY
- GBHDE: Hellesdon, NFK
- GBHDF: Huddersfield, KIR
- GBHDG: Headington, OXF
- GBHDH: Haddenham, CAM
- GBHDI: Hadleigh, ESS
- GBHDK: Haydock, SHN
- GBHDL: Hadleigh, SFK
- GBHDN: Haslingden, LAN
- GBHDO: Hendon, BNE
- GBHDR: Helford River, CON
- GBHDS: Holland on Sea, ESS
- GBHDT: Horndon on the Hill, ESS
- GBHDW: Halton West, NYK
- GBHDY: Hadley, TFW
- GBHE2: Hensall, NYK
- GBHEA: Heacham, NFK
- GBHEB: Hebburn, STY
- GBHEC: High Ercall, TFW
- GBHED: Headcorn, KEN
- GBHEE: Hethel, LEC
- GBHEF: Hertford, HRT
- GBHEG: Hindley Green, WGN
- GBHEH: Hemsworth, WKF
- GBHEI: Heighington, DUR
- GBHEK: Heckmondwike, KIR
- GBHEL: Halwell, DEV
- GBHEM: Hempstead, NFK
- GBHEN: Henley-on-Thames, OXF
- GBHEO: Headley Down, HAM
- GBHEQ: Heaton, LAN
- GBHER: Hurstpierpoint, WSX
- GBHES: Heston, HNS
- GBHET: Herston, DOR
- GBHEV: Hove, ESX
- GBHEW: Henlow, CBF
- GBHEY: Chertsey, SRY
- GBHF5: Heathfield, ESX
- GBHFD: Haslingfield, CAM
- GBHFI: Holmfield, CLD
- GBHFO: Handforth, CHE
- GBHFR: Halliford, SRY
- GBHFX: Halifax, CLD
- GBHGA: High Ackworth, WKF
- GBHGC: High Ercall, SHR
- GBHGD: Hastingwood, ESS
- GBHGE: Hedge End, HAM
- GBHGF: Higham Ferrers, NTH
- GBHGG: Highgate/London, CMD
- GBHGH: Higham, KEN
- GBHGI: Hethersgill, CMA
- GBHGL: High Halden, KEN
- GBHGM: Hingham, NFK
- GBHGN: Hurst Green, ESX
- GBHGO: Highworth, SWD
- GBHGP: Hogsthorpe, LIN
- GBHGR: Houghton Regis, CBF
- GBHGS: Horningsea, CAM
- GBHGT: Harlington, HIL
- GBHGW: Hightown, SFT
- GBHGX: Hougham, LIN
- GBHGY: Hougharry and Loch Eport, ELS
- GBHH3: Hedenham, NFK
- GBHHA: Waltham Abbey, ESS
- GBHHD: Hindhead, SRY
- GBHHE: Hemel Hempstead, HRT
- GBHHF: Heathfield, SOM
- GBHHG: High Legh, CHE
- GBHHH: Heathhall, DGY
- GBHHI: Harold Hill, HAV
- GBHHL: Harrow on the Hill, HRW
- GBHHM: Hardham, WSX
- GBHHN: Holehaven
- GBHHO: Hawthorn, WIL
- GBHHS: Hathersage, DBY
- GBHHT: Horton Heath, HAM
- GBHHW: Huthwaite, NTT
- GBHIA: Henley-in-Arden, WAR
- GBHIB: Hamiltons Bawn, ARM
- GBHID: Hillend, FIF
- GBHIE: Herrington, SND
- GBHIG: Highbridge, SOM
- GBHIH: Horwich, BOL
- GBHIL: Hinckley, LEC
- GBHIN: Honiton
- GBHIO: Hinton Saint George, SOM
- GBHIR: High Throston, HPL
- GBHIS: Histon, CAM
- GBHIW: Chilworth, HAM
- GBHIY: Hindley, WGN
- GBHKB: Hackbridge, STN
- GBHKD: Hookwood, SRY
- GBHKG: Heckington, LIN
- GBHKH: Hawksworth, LDS
- GBHKI: Halkirk, HLD
- GBHKL: Hucknall, NTT
- GBHKO: Hackforth, NYK
- GBHKP: Hackenthorpe, SHF
- GBHKR: Hawksworth, NTT
- GBHKT: Hook Norton, OXF
- GBHKW: Hockwold cum Wilton, NFK
- GBHKY: Hockley, BIR
- GBHLA: Henley, WSX
- GBHLB: Hillsborough, SHF
- GBHLC: Holmes Chapel, CHE
- GBHLD: Harold Wood, HAV
- GBHLE: Hale Bank, CHW
- GBHLF: Hurlford, EAY
- GBHLG: Halling, KEN
- GBHLH: Hetton le Hole, SND
- GBHLI: Hollingworth, LEC
- GBHLL: Hillingdon, HIL
- GBHLM: Helmdon, NTH
- GBHLN: Helensburgh, AGB
- GBHLO: Holy Loch, AGB
- GBHLQ: Halton, LAN
- GBHLR: Holmfirth, KIR
- GBHLS: Houghton le Spring, SND
- GBHLT: Holt, NFK
- GBHLU: Hunslet/Leeds, LDS
- GBHLV: Hallen, SGC
- GBHLW: Halewood, KWL
- GBHLY: Holyhead, GWN
- GBHMA: Helmsdale, HLD
- GBHMB: Hambleden, BKM
- GBHMD: Holmewood, DBY
- GBHME: Holme, CMA
- GBHMI: Hayes, HIL
- GBHMK: Holmrook, CMA
- GBHML: Hambleton, NYK
- GBHMM: Hammersmith, HMF
- GBHMN: Hilmarton, WIL
- GBHMO: Hamworthy, DOR
- GBHMP: Hampton, RIC
- GBHMR: Humber
- GBHMS: Hampstead, CMD
- GBHMT: Hamilton, SLK
- GBHMV: Hamnavoe, Burra Isle, ZET
- GBHMW: Harmondsworth, HIL
- GBHMY: Hemsby, NFK
- GBHN2: Hathern, LEC
- GBHNA: Henllan, CMN
- GBHNB: Hildenborough, KEN
- GBHND: Handsworth, SHF
- GBHNE: Horne, SRY
- GBHNF: Henfield, WSX
- GBHNG: Hengoed, CAY
- GBHNH: Hastingleigh, KEN
- GBHNL: Hanley, STS
- GBHNN: Hendon, SND
- GBHNO: Henton, OXF
- GBHNR: Heanor, DBY
- GBHNS: Hamars Ness, Fetlar, ZET
- GBHNT: Hunstanton, NFK
- GBHNU: Hainault, RDB
- GBHNW: Hanwell, EAL
- GBHNX: Hinxworth, HRT
- GBHNY: Hendy, CMN
- GBHOB: Horrabridge, DEV
- GBHOD: Holmeswood, LAN
- GBHOE: Hooe
- GBHOF: Holford, SOM
- GBHOG: Houghton, CAM
- GBHOH: Horsham, WSX
- GBHOI: Hollington, ESX
- GBHOJ: Howdon, STY
- GBHOK: Hook, LIN
- GBHOL: Holbeach, LIN
- GBHOM: Holm, ORK
- GBHON: Hoddesdon, HRT
- GBHOO: Hoo, KEN
- GBHOP: Hopeman, MRY
- GBHOR: Horndean, HAM
- GBHOS: Hoswick, ZET
- GBHOT: Horton, WNM
- GBHOU: Hounslow, HNS
- GBHOV: Housa Voe, Papa Stour, ZET
- GBHOW: Holt, WIL
- GBHOX: Hooton, CAM
- GBHOY: Hornsey, HRY
- GBHOZ: Hoole, CHW
- GBHP2: Greatham, HPL
- GBHPC: Hope Cove, DEV
- GBHPD: Harpenden, HRT
- GBHPE: Hope, FLN
- GBHPJ: Highpeak Junction, DBY
- GBHPK: High Peak, DBY
- GBHPL: Hampton Hill, RIC
- GBHPN: Shipton, NYK
- GBHPO: Hampole, DNC
- GBHPR: Hipperholme, ERY
- GBHPT: Hound Point, FIF
- GBHPV: Hampton Lucy, WAR
- GBHPY: Hartpury, GLS
- GBHQP: Hope, DBY
- GBHRA: Horam, ESX
- GBHRB: Horbury, WKF
- GBHRC: Hornchurch, HAV
- GBHRD: Harlesden, BEN
- GBHRE: Humbie, ELN
- GBHRF: Harefield, HIL
- GBHRG: Hartington, DBY
- GBHRH: Holborough, KEN
- GBHRI: Heriot, SCB
- GBHRK: Hardwicke, GLS
- GBHRL: Harlow, ESS
- GBHRM: Hermon, PEM
- GBHRN: Herne Bay, KEN
- GBHRO: Harrow, BEN
- GBHRR: Harrington, CMA
- GBHRS: Horsmonden, KEN
- GBHRT: Harrogate, NYK
- GBHRU: Hurst, OLD
- GBHRW: Harwich, ESS
- GBHRY: Horley, SRY
- GBHRZ: Hornsea, ERY
- GBHSA: Halsall, LAN
- GBHSB: Helsby, CHW
- GBHSD: Halstead, KEN
- GBHSE: Hessle/Hull, KHL
- GBHSF: Horsforth, LDS
- GBHSG: Haslington, CHE
- GBHSH: Hersham, SRY
- GBHSI: Heslington, YOR
- GBHSK: Hassocks, WSX
- GBHSL: Haslemere, SRY
- GBHSM: Holme upon Spalding Moor, ERY
- GBHSN: Halesowen, DUD
- GBHSO: Helmshore, LAN
- GBHSP: Hassop, DBY
- GBHSR: Haselor, WAR
- GBHST: Hunterston, NAY
- GBHSW: Halesworth, SFK
- GBHSX: Herstmonceux, ESX
- GBHSY: Haseley, WAR
- GBHTA: Streatham, LND
- GBHTB: Hartlebury, WOR
- GBHTD: Halstead, ESS
- GBHTE: Hatch End, HRW
- GBHTF: Hartfield, ESX
- GBHTG: Hastings, ESX
- GBHTH: Hythe, KEN
- GBHTI: Hatherleigh, DEV
- GBHTL: Huntly, ABD
- GBHTN: Hillington, GLG
- GBHTO: Hatton, HIL
- GBHTP: Hartlepool, HPL
- GBHTQ: Hutton, LAN
- GBHTR: Hatherton, CHE
- GBHTS: Whitehills, ABD
- GBHTT: Hetton, NYK
- GBHTW: Hartwell, NTH
- GBHTX: Holton, SFK
- GBHTY: Heytesbury, WIL
- GBHUD: Huntingdon, CAM
- GBHUE: Hurley, WNM
- GBHUF: Hungerford, WBK
- GBHUG: Houghton, HAM
- GBHUH: Halloughton, NTT
- GBHUL: Hull, ERY
- GBHUN: Hunwick, DUR
- GBHUO: Hunton, NYK
- GBHUR: Hurst, WOK
- GBHUS: Hursley, HAM
- GBHUT: Houton, ORK
- GBHUU: Staplehurst, KEN
- GBHUX: Hutton, ESS
- GBHUY: Humberside Apt, ERY
- GBHVG: Hevingham, NFK
- GBHVM: Hoveringham, NTT
- GBHVN: Hullavington, WIL
- GBHVO: Ham Voe, Foula, ZET
- GBHVR: Haverfordwest, PEM
- GBHVT: Hoveton, NFK
- GBHW9: Halwill, DEV
- GBHWC: Hawick, SCB
- GBHWD: How, CMA
- GBHWE: Hawes, NYK
- GBHWG: Hounslow Green, ESX
- GBHWH: Hawthorn Hill, LIN
- GBHWI: Hartley Wintney, HAM
- GBHWK: Hawkhurst, KEN
- GBHWL: Holywell, FLN
- GBHWN: Hawarden, FLN
- GBHWO: Holsworthy
- GBHWR: Harworth, NTT
- GBHWS: Haltwhistle, NBL
- GBHWT: Haworth, BRD
- GBHWU: Hirwaun, RCT
- GBHWV: Howwood, RFW
- GBHWW: Hawkwell, ESS
- GBHWX: Hanworth, LND
- GBHWY: High Wycombe, BKM
- GBHWZ: Hugh Town, CON
- GBHXH: Hexham, NBL
- GBHXL: Goxhill, ERY
- GBHXM: Coolham, WSX
- GBHXN: Hixon, STS
- GBHXO: Hoton, LEC
- GBHXT: Hexton, HRT
- GBHXX: Hedon
- GBHXY: Harby, NTT
- GBHY2: Harbury
- GBHYB: Heswall, WRL
- GBHYD: Hyde, TAM
- GBHYE: Headley, HAM
- GBHYG: Hayling Island, HAM
- GBHYI: Holy Island, NBL
- GBHYJ: Helston, CON
- GBHYK: Hemyock, DEV
- GBHYL: Hoylake, WRL
- GBHYM: Heysham, LAN
- GBHYN: Huyton, KWL
- GBHYO: Hoy, ORK
- GBHYP: Holyport, WNM
- GBHYR: Heybridge
- GBHYS: Haynes, CBF
- GBHYT: Hythe, HAM
- GBHYW: Heywood, RCH
- GBHYY: Henllys, MON
- GBHZA: Hilsea, POR
- GBHZD: Hersden, KEN
- GBHZG: Hazel Grove, SKP
- GBHZL: Hazlemere, BKM
- GBHZO: Hazelwood, DBY
- GBHZZ: Hallatrow, BST
- GBIAB: Isle Abbotts, SOM
- GBIAO: Iron Acton, SGC
- GBIAR: Isle of Barra, ELS
- GBIAY: Inverallochy, ABD
- GBIBC: Ribchester, LAN
- GBIBG: Ironbridge, SHR
- GBIBH: Ickburgh, NFK
- GBICD: Inkberrow, WOR
- GBICH: Inchture, PKN
- GBICK: Icklesham, ESX
- GBICT: Ilchester, SOM
- GBIDC: Idlicote, OXF
- GBIDY: Skidby, ERY
- GBIFD: Ilford, NWM
- GBIFN: Shifnal, SHR
- GBIGE: Billinge, LAN
- GBIGG: Eigg
- GBIGH: Beighton, YOR
- GBIGM: Ingoldmells, LIN
- GBIGN: Wrington, NSM
- GBIGT: Ingatestone, ESS
- GBIHM: Ingham, SFK
- GBIHO: Hooke, DOR
- GBIIB: Irthlingborough, NTH
- GBIKL: Essendon, HRT
- GBIKS: Ilkeston, DBY
- GBILE: Shirley, HAM
- GBILF: Ilfracombe
- GBILH: Illston on the Hill, LEC
- GBILI: Islip, NTH
- GBILK: Ilkley, BRD
- GBILL: Gills, HLD
- GBILN: Ilton, NYK
- GBILO: Ilton, SOM
- GBILP: Islip, OXF
- GBILY: Islay Apt, AGB
- GBIMG: Islandmagee, ANT
- GBIMK: Ince-in-Makerfield, WGN
- GBIMM: Immingham, NEL
- GBIMP: Impington, CAM
- GBIMR: Ilminster, SOM
- GBINC: Ince, CHW
- GBIND: Invernoaden, AGB
- GBINE: Binley, COV
- GBING: Ingham, LIN
- GBINH: Inchinnan, RFW
- GBINK: Inverkeithing, FIF
- GBINL: Ingleton, NYK
- GBINM: Ellingham, NBL
- GBINN: Hannington, NTH
- GBINO: Swinton, ROT
- GBINR: Inverie, HLD
- GBINS: Instow, DEV
- GBINT: Wintringham, NYK
- GBINV: Inverness, HLD
- GBINY: Invergarry, HLD
- GBIOD: Isfield, ESX
- GBIOG: Isle of Grain, KEN
- GBION: Baile Mor, Iona, AGB
- GBIOP: Isle of Portland, DOR
- GBIOS: Isle of Sheppey, KEN
- GBIPS: Ipswich, SFK
- GBIRA: Birdham
- GBIRB: Irby, CON
- GBIRE: Leire, LEC
- GBIRG: Inveruglas, AGB
- GBIRL: Irlam, TRF
- GBIRO: Winterton, NLN
- GBIRT: Irchester, NTH
- GBIRV: Irvine, NAY
- GBISA: Port Isaac, CON
- GBISC: Isles of Scilly, CON
- GBISD: Swineshead, LIN
- GBISH: Insch, ABD
- GBISK: Isle of Skye, HLD
- GBISL: Bisley, SRY
- GBISN: Wistaston, CHE
- GBISO: Silsoe, CBF
- GBISS: Liss, HAM
- GBIST: Islington, ISL
- GBISW: Isleworth, HNS
- GBISY: Islay, AGB
- GBITA: Binstead, IOW
- GBITC: Itchenor, WSX
- GBITH: Innerleithen, SCB
- GBITN: Itchen, HAM
- GBITY: Whitley, NYK
- GBIVB: Inverbervie, ABD
- GBIVE: Iver, BKM
- GBIVG: Invergordon, HLD
- GBIVH: Iver Heath, BKM
- GBIVI: Inverurie, ABD
- GBIVK: Inverkip, IVC
- GBIVL: Ironville, DBY
- GBIVR: Inveraray, AGB
- GBIVS: Saint Ives, CON
- GBIVT: Irvinestown, FER
- GBIVY: Ivybridge
- GBIXW: Ixworth, SFK
- GBJAR: Jarrow, STY
- GBJBG: Jedburgh, SCB
- GBJBH: Beamhurst, STS
- GBJDV: Adversane, WSX
- GBJGR: Juniper Green, EDH
- GBJHT: Johnstone, RFW
- GBJHV: Johnshaven, ABD
- GBJHW: Crown Dry-Dock, KHL
- GBJMS: Jamestown, WDU
- GBJOG: John O'Groats, HLD
- GBJSH: Sunbury-on-Thames, SRY
- GBJTB: Johnstonebridge, DGY
- GBJTC: Thornton-Cleveleys, LAN
- GBJTM: Tupholme, LIN
- GBJUR: Jura, AGB
- GBJWD: Wardle, RCH
- GBK3T: Kirkheaton, NBL
- GBK4N: Kirkheaton, KIR
- GBK8S: Kingston Saint Mary, SOM
- GBKAL: Kallin (Ceallan), Isle of Grimsay, ELS
- GBKAR: Karcaldy
- GBKBA: Kirkby in Ashfield, NTT
- GBKBE: Kinlochbervie, HLD
- GBKBG: Knightsbridge, WSM
- GBKBK: Burstwick, ERY
- GBKBM: Kirkby Misperton
- GBKBN: Kilburn, BEN
- GBKBO: Kimbolton, CAM
- GBKBP: Kingston Bagpuize, OXF
- GBKBR: Kelbrook, LAN
- GBKBT: Kirkcudbright, DGY
- GBKBU: Kirkburton, KIR
- GBKBW: Knebworth, HRT
- GBKBY: Kinmel, DEN
- GBKCG: Kennacraig, AGB
- GBKCH: Kilchiaran, AGB
- GBKCK: Knock, AGB
- GBKCN: Kircubbin, DOW
- GBKCO: Kings Coughton, WAR
- GBKDE: Kincardine, FIF
- GBKDG: Kirtlebridge, DGY
- GBKDM: Kidderminster, WOR
- GBKDN: Kingsdown, KEN
- GBKDW: Kilndown, KEN
- GBKDY: Keady, ARM
- GBKEA: Keadby, NLN
- GBKEG: Kegworth, DBY
- GBKEH: Kempston Hardwick, BDF
- GBKEI: Keighley, BRD
- GBKEK: Keswick, NFK
- GBKEL: Kells, ANT
- GBKEM: Kemble, GLS
- GBKEN: Kensington/London, KEC
- GBKES: Keiss, HLD
- GBKET: Kettletoft, Sanday, ORK
- GBKEV: Keyhaven, HAM
- GBKEW: Kew, RIC
- GBKEY: Keymer, WSX
- GBKGA: Kesgrave, SFK
- GBKGB: Kingsbury, LND
- GBKGC: King's Cliffe, NTH
- GBKGE: Kellingley, NYK
- GBKGH: Killingholme, LIN
- GBKGL: Kings Langley, HRT
- GBKGN: Kings Norton, BIR
- GBKGO: Kilmington, WIL
- GBKGS: Kingsley, HAM
- GBKGU: Kingussie, HLD
- GBKGW: Kingswinford, STS
- GBKGY: Kingsbury, WAR
- GBKHA: Thakeham, WSX
- GBKHC: Kibworth Harcourt, LEC
- GBKHI: Kenny Hill, SFK
- GBKHM: Kirk Hammerton, NYK
- GBKHN: Kinghorn, FIF
- GBKHT: Kempshott, HAM
- GBKIA: Kinbrace, HLD
- GBKIB: Kingsbridge, DEV
- GBKIC: Kilcreggan, AGB
- GBKIE: Drumfearn, HLD
- GBKIF: Kirkby in Furness, CMA
- GBKIG: Kennington/London, LND
- GBKIH: Kirkham, NYK
- GBKII: Kilninian, AGB
- GBKIK: Kirkham, LAN
- GBKIL: Kilbride, AGB
- GBKIM: Kimmeridge, DOR
- GBKIN: Kingswood, SRY
- GBKIO: Killough, DOW
- GBKIP: Kippford, DGY
- GBKIR: Kirknewton, NBL
- GBKIS: Kishorn, HLD
- GBKIT: Kirk Ireton, DBY
- GBKIY: Wilton, RCC
- GBKK6: Allington, KEN
- GBKKB: Kirkby, KWL
- GBKKD: Kirkcaldy, FIF
- GBKKG: Kirkhamgate, WKF
- GBKKH: Kirkheaton, NFK
- GBKKI: Kirkliston, EDH
- GBKKL: Kirkby Lonsdale, CMA
- GBKKN: Kirkconnel, DGY
- GBKKO: Knockholt, KEN
- GBKKS: Kirk Sandall, DNC
- GBKKT: Kirkintilloch, EDU
- GBKL2: Kenley, CRY
- GBKLB: Kilbarchan
- GBKLG: Kellington, NYK
- GBKLK: Kilkeel, NYM
- GBKLL: Killinghall, NYK
- GBKLN: King's Lynn, NFK
- GBKLO: Kelso, SCB
- GBKLR: Kilroot, ANT
- GBKLS: Kilsby, NTH
- GBKLT: Kilsyth, NLK
- GBKLW: Kenilworth, WAR
- GBKLY: Kilgetty, PEM
- GBKMB: Kemberton, SHR
- GBKMG: Kirmington, NLN
- GBKMI: Kemsing, KEN
- GBKMK: Kilmarnock, EAY
- GBKML: Kirkmichael, SAY
- GBKMN: Kilmacolm, IVC
- GBKMO: Kirby Muxloe, LEC
- GBKMP: Kempsford, GLS
- GBKMS: Kirby Moorside, NYK
- GBKMT: Kimpton, HAM
- GBKNA: Knaresborough, NYK
- GBKNB: Barnack
- GBKNC: Kinlochleven, AGB
- GBKND: Kendal, CMA
- GBKNE: Kineton, WAR
- GBKNG: Kingsteignton
- GBKNH: Kings Heath, BIR
- GBKNK: Kingsnorth, KEN
- GBKNL: Kinloss, MRY
- GBKNM: Kent, KEN
- GBKNN: Kenninghall, NFK
- GBKNO: Knottingley, WKF
- GBKNR: Kinross, PKN
- GBKNS: Kingston, STS
- GBKNT: Kenton, SFK
- GBKNV: Kinver, STS
- GBKNW: Knowsley, KWL
- GBKNY: Kinnerley, SHR
- GBKOA: Kilchoan, HLD
- GBKOH: Kinloch, Rum, HLD
- GBKON: Knighton, POW
- GBKOR: Kintore, ABD
- GBKOT: Cottenham, CAM
- GBKOW: Knowle, SOL
- GBKPS: Killroot Power Station Jetty, ANT
- GBKPT: Knapton, NYK
- GBKRA: Kilkardy, FIF
- GBKRE: Kentmere, CMA
- GBKRH: Ketteringham, LEC
- GBKRK: Kirkby Stephen, CMA
- GBKRM: Kirtomy, HLD
- GBKRN: Killearn, STG
- GBKRR: Kirriemuir, ANS
- GBKRT: Kirton in Lindsey, NLN
- GBKRY: Keresley, COV
- GBKSA: Birkenshaw, YOR
- GBKSB: Kentisbeare, DEV
- GBKSF: Knutsford, CHE
- GBKSH: Kesh, FER
- GBKSL: Kinsley, ERY
- GBKSM: Kingston Seymour, NSM
- GBKST: Keston, LND
- GBKSU: South Killingholme, LIN
- GBKSW: Kingswood, GLS
- GBKSY: Kearsley, BOL
- GBKTE: Kettlethorpe, LIN
- GBKTG: Kitt Green, BIR
- GBKTH: Keith, MRY
- GBKTN: Kington, WOR
- GBKTR: Kettering, NTH
- GBKTT: Ketteringham, NFK
- GBKTW: Kentish Town West, LBH
- GBKUH: Kingston upon Hull, NLN
- GBKUT: Kingston upon Thames, KTT
- GBKVD: Kelvedon, ESS
- GBKWC: Keswick, CMA
- GBKWD: Knoweside, SAY
- GBKWE: Kingswear, DEV
- GBKWG: Kilwinning, NAY
- GBKWL: Kirkwall, ORK
- GBKWN: Kentish Town, LND
- GBKWO: Kegworth, LEC
- GBKWR: Killingworth, NTY
- GBKWS: Kingswells, ABE
- GBKWT: Kensworth, CBF
- GBKXG: Knotty Green, BKM
- GBKYB: Kelly Bray, CON
- GBKYE: Kyles of Bute, AGB
- GBKYH: Killyleagh
- GBKYL: Kyle of Lochalsh, HLD
- GBKYN: Kyleakin, HLD
- GBKYS: Keynsham, BAS
- GBKYU: Kylesku, HLD
- GBKYW: Keyworth, NGM
- GBKZO: Kidlington, OXF
- GBLAA: Llanallgo, AGY
- GBLAB: Llanaber, GWN
- GBLAD: Little Addington, NTH
- GBLAE: Llanenddwyn, GWN
- GBLAF: Llanfrothen, GWN
- GBLAG: Lancing, WSX
- GBLAH: Lamlash, NAY
- GBLAI: Laindon, ESS
- GBLAK: Lakenheath, SFK
- GBLAL: Langley, SLG
- GBLAM: Llanarmon, GWN
- GBLAN: Lancaster, LAN
- GBLAO: Landore, SWA
- GBLAR: Larne, LRN
- GBLAS: Long Ashton, NSM
- GBLAT: Langport, SOM
- GBLAU: Launceston, CON
- GBLAV: Lavenham, SFK
- GBLAW: Law, SLK
- GBLAX: Laxo, ZET
- GBLBA: Leeds, LDS
- GBLBC: Balnabruaich, HLD
- GBLBD: Lochboisdale (Loch Baghasdail), South Uist, ELS
- GBLBE: Loch Buie (Mull), AGB
- GBLBH: Lamb Head
- GBLBI: Llanberis, GWN
- GBLBK: Barking, SFK
- GBLBN: Longbenton, NET
- GBLBO: Little Brampton, SHR
- GBLBR: Lambourn, WBK
- GBLBT: Little Budworth, CHW
- GBLBU: Long Buckby, NTH
- GBLBZ: Leighton Buzzard, CBF
- GBLCA: Lochawe, AGB
- GBLCC: Loch Carnan
- GBLCD: Loch Torridon, HLD
- GBLCG: Loch Long, AGB
- GBLCH: Lochwinnoch, RFW
- GBLCI: Lochailort, HLD
- GBLCK: Leckhampstead, WBK
- GBLCL: London Colney, HRT
- GBLCM: Lytchett Minster, DOR
- GBLCN: Lincoln, LIN
- GBLCO: Loscoe, DBY
- GBLCR: Lochcarron, HLD
- GBLCS: Leicester, LEC
- GBLCT: London City Airport, LND
- GBLCW: Leckwith, VGL
- GBLCY: Lochgelly, FIF
- GBLD7: Lidlington, CBF
- GBLDA: Leadon
- GBLDB: Llandybie, CMN
- GBLDC: Ladock, CON
- GBLDD: Liddington, WIL
- GBLDE: Luddenden, CLD
- GBLDF: Landford, WIL
- GBLDG: Longbridge/Birmingham, BIR
- GBLDH: Langdon Hills, ESS
- GBLDI: Lindfield, WSX
- GBLDK: Lower Dicker, ESX
- GBLDL: Ludlow, SHR
- GBLDN: Cleadon, STY
- GBLDO: Llandudno, GWN
- GBLDQ: Loddon, NFK
- GBLDR: Balderton, NTT
- GBLDS: Saint Leonards-on-Sea, ESX
- GBLDT: Lydiate, SFT
- GBLDV: Llandovery, CMN
- GBLDW: Llandrindod Wells, POW
- GBLDX: Long Ditton, SRY
- GBLDY: Londonderry, DRY
- GBLE7: Lee, BKM
- GBLEA: Long Eaton, DBY
- GBLEB: Lane End, BKM
- GBLEC: Lechlade, GLS
- GBLED: Ledbury, HEF
- GBLEE: Leeds ICD, LDS
- GBLEG: Leigh, KEN
- GBLEH: Leatherhead, SRY
- GBLEI: Leith, EDH
- GBLEK: Leek, STS
- GBLEM: Lenham, KEN
- GBLEN: Leiston, SFK
- GBLEO: Leominster, HEF
- GBLEQ: Land's End, CON
- GBLER: Lerwick, ZET
- GBLES: Lee-on-the-Solent, HAM
- GBLET: Letterston, PEM
- GBLEV: Leven, FIF
- GBLEW: Edgeware, LND
- GBLEY: Leyburn, NYK
- GBLFC: Llanfairfechan, CWY
- GBLFD: Limpsfield, SRY
- GBLFF: Llansteffan, CMN
- GBLFG: Lower Farringdon, HAM
- GBLFH: Llanfyrnach, PEM
- GBLFP: Llanfairpwllgwyngyll, GWN
- GBLFT: Lifton, DEV
- GBLFW: Llanvair Waterdine, SHR
- GBLFY: Llanfyllin, POW
- GBLGA: Llangarron, HEF
- GBLGB: Long Hanborough, OXF
- GBLGC: Longcross, SRY
- GBLGD: Little Gransden, CAM
- GBLGE: Lightwater, SRY
- GBLGF: Longfield, KEN
- GBLGG: Langton Green, KEN
- GBLGH: Leigh, WGN
- GBLGI: Llangefni, AGY
- GBLGK: Llangattock, POW
- GBLGL: Langley Mill, DBY
- GBLGN: Loughton, BKM
- GBLGO: Largo, FIF
- GBLGP: London Gateway Port, ESS
- GBLGR: Langar, NTT
- GBLGS: Largs, NAY
- GBLGT: Longton, STS
- GBLGU: Letham, ANS
- GBLGW: Gatwick Apt/London, WSX
- GBLGX: London Gateway Park, ESS
- GBLGY: Loch Gelly, FIF
- GBLHC: Ballindalloch, SCB
- GBLHF: Lichfield, STS
- GBLHG: Little Houghton, BNS
- GBLHH: Little Heath, COV
- GBLHI: Llanhilleth
- GBLHL: Little Hallingbury, ESS
- GBLHM: Laleham, SRY
- GBLHN: Loughton, ESS
- GBLHO: Longhope, Hoy, ORK
- GBLHP: Longhope, GLS
- GBLHR: Heathrow Apt/London, HIL
- GBLHS: Loch Striven, AGB
- GBLHT: Little Hulton, SLF
- GBLHV: Little Haven, PEM
- GBLHW: Llangammarch Wells, POW
- GBLIB: Liverpool Bay Terminal
- GBLIE: Lye, DUD
- GBLIF: Foston, LIN
- GBLIG: Lighthorne, WAR
- GBLIH: Leamington Hastings, WAR
- GBLIK: Little Oakley, NTH
- GBLIM: Limavady, LMV
- GBLIN: Lisnaskea, FER
- GBLIO: Linwood, RFW
- GBLIR: Little Rissington, GLS
- GBLIS: Lisburn, LSB
- GBLIT: Littlehampton, WSX
- GBLIV: Liverpool, LIV
- GBLJC: Llandudno Junction, CWY
- GBLJN: Littleton
- GBLJU: Lostock Junction, BOL
- GBLKA: Lakenham, NFK
- GBLKB: Lockerbie, DGY
- GBLKD: Liskeard, CON
- GBLKH: Locks Heath, HAM
- GBLKK: Laurencekirk, ABD
- GBLKL: Larkhill, WIL
- GBLKM: Little Kimble, BKM
- GBLKN: Blakeney, GLS
- GBLKT: Lower Kinnerton, CHW
- GBLL3: Lullington, DBY
- GBLLA: Llandeilo, CMN
- GBLLB: Littleborough, RCH
- GBLLC: Little Carlton, LIN
- GBLLD: Llanddulas, CWY
- GBLLE: Llangoed, GWN
- GBLLF: Llanfrynach, POW
- GBLLG: Llangennech, CMN
- GBLLH: Little Hadham, HRT
- GBLLI: Llangeinor, BGE
- GBLLL: Swalwell, NET
- GBLLM: Little Milton, OXF
- GBLLN: Llanelli, CMN
- GBLLO: Llanon, CGN
- GBLLP: Littleport, CAM
- GBLLR: Little Horsted, ESX
- GBLLS: Llanstephan, CMN
- GBLLT: Llantrisant, RCT
- GBLLU: Littlebourne, KEN
- GBLLV: Little Lever, BOL
- GBLLW: Linlithgow, WLN
- GBLLY: Llay, WRX
- GBLLZ: Llanidloes, POW
- GBLMA: Lochmaddy, ELS
- GBLMB: Lamberhurst, KEN
- GBLMD: Long Melford, SFK
- GBLMK: Limekilns, FIF
- GBLMM: Lymm, CHE
- GBLMN: Ballymartin, NYM
- GBLMO: Lynemouth, NBL
- GBLMP: Lampeter, CGN
- GBLMR: Lyminster, WSX
- GBLMS: Langton Matravers, DOR
- GBLMT: Llansamlet, SWA
- GBLMW: Lesmahagow, SLK
- GBLMY: Llanarmon-yn-Iâl, DEN
- GBLNA: Lochearnhead, STG
- GBLNB: Llanbedr, GWN
- GBLND: Llandow, VGL
- GBLNE: Lyne, SRY
- GBLNF: Lingfield, SRY
- GBLNG: Llangadog, CMN
- GBLNH: Loanhead, MLN
- GBLNI: Long Bennington, LIN
- GBLNK: Lanark, SLK
- GBLNL: Llangollen, DEN
- GBLNM: Lynmouth
- GBLNO: Langholm, DGY
- GBLNR: Llanharan, RCT
- GBLNW: Linwood, LIN
- GBLNY: Langley, CHE
- GBLNZ: Lenzie, EDU
- GBLOA: Lochans, DGY
- GBLOB: Longborough, GLS
- GBLOC: Long Crendon, BKM
- GBLOD: Lound, NTT
- GBLOE: Looe, CON
- GBLOF: Longford, COV
- GBLOG: Lostock Gralam, CHW
- GBLOH: Lochgilphead
- GBLOI: Long Itchington, WAR
- GBLOK: Little Oakley, ESS
- GBLOL: Lochaline, HLD
- GBLOM: Long Marston, NYK
- GBLON: London, LND
- GBLOO: Longthorpe, CAM
- GBLOP: Lopen, SOM
- GBLOQ: Longley, SHF
- GBLOR: Langworth, LIN
- GBLOS: Leigh-on-Sea, ESS
- GBLOT: Louth, LIN
- GBLOU: Loughborough, LEC
- GBLOV: Lochinver, HLD
- GBLOW: Lowestoft, SFK
- GBLOY: Walls, ORK
- GBLOZ: Lode, NFK
- GBLPE: Lower Penn, STS
- GBLPF: Lapford
- GBLPH: Liphook, HAM
- GBLPM: Lympsham, SOM
- GBLPN: Clapton, SOM
- GBLPR: Balbeggie, PKN
- GBLPT: Lepton, BRD
- GBLPW: Lapworth, WAR
- GBLRA: Lanreath, CON
- GBLRB: Larbert, FAL
- GBLRD: Litherland, SFT
- GBLRE: Longridge, LAN
- GBLRG: Lairg, HLD
- GBLRH: Lark Hill, WIL
- GBLRI: Larling, NFK
- GBLRK: Larkfield, IVC
- GBLRL: Larkhall, SLK
- GBLRM: Llanerchymedd, AGY
- GBLRN: Llanwarne, HEF
- GBLRP: Loch Ryan Pt, DGY
- GBLRR: Lisnarrick
- GBLRS: Llanwrst, CWY
- GBLRT: Long Stratton, NFK
- GBLRW: Llanrwst, CWY
- GBLRZ: Lochranza, Isle of Arran, NAY
- GBLSA: Ludgershall, WIL
- GBLSC: Loch Scridain (Isle Mull), AGB
- GBLSD: Wilsden, BRD
- GBLSE: Lees, OLD
- GBLSF: Lilliesleaf, SCB
- GBLSH: Langstone, HAM
- GBLSI: Sumburgh, ZET
- GBLSK: Linstock, CMA
- GBLSL: Leslie, ABD
- GBLSM: Lismore Island
- GBLSN: Long Sutton, LIN
- GBLSO: Long Marston, WAR
- GBLSP: Leamington Spa, WAR
- GBLSR: Little Somborne, HAM
- GBLSS: Lossiemouth, MRY
- GBLST: Lissett, YOR
- GBLSW: Lostwithiel, CON
- GBLSY: Laisterdyke, BRD
- GBLTC: Litchfield, HAM
- GBLTD: Bolt Head
- GBLTE: Little Eaton, DBY
- GBLTF: Langtoft, LIN
- GBLTH: Letchworth, HRT
- GBLTK: Little Thurrock, ESS
- GBLTL: Littlebrook, KEN
- GBLTM: Llantwit Major, VGL
- GBLTN: Linton, KEN
- GBLTO: Litton, DBY
- GBLTP: London Thamesport, KEN
- GBLTR: Llantarnam, TOF
- GBLTS: Loth, Sanday, ORK
- GBLTT: Lutterworth, LEC
- GBLTW: Longtown, CMA
- GBLTX: Levington, SFK
- GBLTY: Llanarthney, CMN
- GBLUB: Luibeilt, HLD
- GBLUG: Lugton, EAY
- GBLUH: Laughton, ESX
- GBLUI: South Cuan, Luing, AGB
- GBLUL: Lulworth Camp, DOR
- GBLUN: Lount, LEC
- GBLUT: Luton, CBF
- GBLUW: Ludworth, DUR
- GBLUX: Luxulyan, CON
- GBLVI: Lanivet, CON
- GBLVK: Levenwick, ZET
- GBLVL: Cleveleys, BPL
- GBLVN: Levenshulme, MAN
- GBLVR: Leverburgh, Harris, ELS
- GBLVS: Liversedge, KIR
- GBLVT: Hampton Lovett, WOR
- GBLVY: Leven, ERY
- GBLWA: Loudwater, BKM
- GBLWC: Lulworth Cove, DOR
- GBLWD: Little Walden, ESS
- GBLWE: Lewes, ESX
- GBLWG: Llwyngwril, GWN
- GBLWH: Little Walsingham, NFK
- GBLWI: Little Witley, WOR
- GBLWL: Latheronwheel, HLD
- GBLWM: Low Moor, BKM
- GBLWN: Lowton, WGN
- GBLWO: Lambourn Woodlands, WBK
- GBLWR: Lower Weare, SOM
- GBLWS: Lewisham, LEW
- GBLWT: West Thurrock, ESS
- GBLWY: Langwathby, CMA
- GBLXG: Luxborough, SOM
- GBLXT: Laxton, NTT
- GBLXW: Lower Stondon, CBF
- GBLXY: Loxley, SHF
- GBLY9: Lydden, KEN
- GBLYA: Lytham Saint Annes, LAN
- GBLYB: Lybster, HLD
- GBLYC: Llanymynech, POW
- GBLYD: Lydney, GLS
- GBLYE: Lyneham, WIL
- GBLYH: Lyndhurst, HAM
- GBLYK: Ladybank, FIF
- GBLYL: Leyland, LAN
- GBLYM: Lymington, HAM
- GBLYN: Lympne, KEN
- GBLYO: Leyton, WFT
- GBLYR: Lyme Regis, DOR
- GBLYS: Lyness, ORK
- GBLYT: Lynton, DEV
- GBLYU: Llandysul, CGN
- GBLYW: Ballywalter, DOW
- GBLYX: Lydd, KEN
- GBLYY: Llanybydder, CMN
- GBLZD: Lizard, CON
- GBLZF: Langford, NTY
- GBM89: Miserden, GLS
- GBMA9: Marnhull, DOR
- GBMAB: Milton Abbas, DOR
- GBMAC: Machrihanish, AGB
- GBMAD: Maddiston, FAL
- GBMAE: Madeley, TFW
- GBMAF: Matfield, KEN
- GBMAG: Magor, MON
- GBMAH: Maidenhead, WNM
- GBMAI: Maidens
- GBMAK: Marrick, NYK
- GBMAL: Maldon, ESS
- GBMAN: Manchester Container Terminal
- GBMAO: Marston, LIN
- GBMAR: March, CAM
- GBMAS: Masham, NYK
- GBMAT: Market Lavington, WIL
- GBMAW: Marchwood, HAM
- GBMAY: Mayfield, MLN
- GBMBD: Maiden Bradley, WIL
- GBMBE: Melbourne, DBY
- GBMBH: Malborough, DEV
- GBMBN: Wimeborne, DOR
- GBMBO: Marylebone, WSM
- GBMBR: Meole Brace, SHR
- GBMBS: Cambs
- GBMBT: Market Bosworth, LEC
- GBMBU: Membury, DEV
- GBMBY: Melton Mowbray, LEC
- GBMCA: Much Hadham, HRT
- GBMCD: Macduff, ABD
- GBMCE: Mitchem, SRY
- GBMCH: Malpas, CHW
- GBMCL: Macclesfield, CHE
- GBMCM: Macmerry, ELN
- GBMCN: Machen, CAY
- GBMCO: Mickleton, GLS
- GBMCR: Mancetter, WAR
- GBMD3: Middleton, WAR
- GBMDD: Middlefield Law, RCC
- GBMDE: Bramdean, HAM
- GBMDH: Midhurst, WSX
- GBMDI: Ardwick, MAN
- GBMDL: Middleham, NYK
- GBMDN: Middleton, RCH
- GBMDO: Milden, SFK
- GBMDP: Market Deeping, CAM
- GBMDS: Micheldever, HAM
- GBMDT: Maidstone, KEN
- GBMDV: Maida Vale/London, BEN
- GBMDW: Middlewich, CHE
- GBMDX: Madley, HEF
- GBMDY: Madeley, STS
- GBMDZ: Middlesex, LND
- GBME5: Merstham, SRY
- GBMEA: Manea, CAM
- GBMEB: Menai Bridge, GWN
- GBMEE: Maesteg, BGE
- GBMEF: Metfield, SFK
- GBMEI: Merriott, SOM
- GBMEL: Melbourn, CAM
- GBMEM: Melmerby, NYK
- GBMEN: Mendlesham, SFK
- GBMEO: Merton, MRT
- GBMER: Merton, NFK
- GBMES: Medstead, HAM
- GBMET: Merthyr Tydfil, MTY
- GBMEY: Maerdy, CWY
- GBMFD: Mansfield, NTT
- GBMFL: Markfield, LAN
- GBMFN: Morfa Nefyn, GWN
- GBMFR: Moelfre, AGY
- GBMFS: Milford-on-Sea, HAM
- GBMFT: Magherafelt, MFT
- GBMFY: Meikle Ferry, HLD
- GBMGB: Marsh Gibbon, BKM
- GBMGH: Maghera, NBL
- GBMGL: Maghull, SFT
- GBMGM: Margam, NTL
- GBMGN: Magheramason, DRY
- GBMGO: Magheramorne
- GBMGP: Magilligan Point Ferry Terminal, Lough Foyle, LMV
- GBMGR: Magdalen Laver, ESS
- GBMGT: Margate, KEN
- GBMHA: Maghera, MFT
- GBMHD: Minehead, SOM
- GBMHE: Mochdre
- GBMHI: Mamhilad, MON
- GBMHJ: Meppershall, CBF
- GBMHL: Mill Hill, BEN
- GBMHM: Martlesham, SFK
- GBMHO: Much Hoole, LAN
- GBMHT: Martlesham Heath, SFK
- GBMHY: Munlochy, HLD
- GBMID: Middlesbrough, RCC
- GBMIK: Milton Keynes, BKM
- GBMIL: Milton, KEN
- GBMIM: Moreton-in-Marsh, GLS
- GBMIN: Minworth, BIR
- GBMIO: Milton, Abingdon, OXF
- GBMIR: Mirfield, KIR
- GBMIS: Mistley, ESS
- GBMIT: Mitcheldean, GLS
- GBMKB: Matlock Bath, DBY
- GBMKD: Market Drayton, SHR
- GBMKF: Milford, SRY
- GBMKH: Market Harborough, LEC
- GBMKI: Muirkirk, EAY
- GBMKL: Market Hill, ARM
- GBMKO: Monkton, STY
- GBMKR: Market Rasen, LIN
- GBMKS: Marks Tey, ESS
- GBMKT: Mickle Trafford, CHW
- GBMKY: Marske-by-the-Sea, RCC
- GBMLA: Meltham, KIR
- GBMLB: Millbrook, CON
- GBMLD: Meldreth, CAM
- GBMLE: Martley, WOR
- GBMLF: Milford Haven, PEM
- GBMLG: Mallaig, HLD
- GBMLH: Melksham, WIL
- GBMLI: Mullion, CON
- GBMLJ: Mellor, SKP
- GBMLK: Mallusk/Newtownabbey, NTA
- GBMLL: Mildenhall, SFK
- GBMLM: Millom, CMA
- GBMLN: Malton, NYK
- GBMLO: Milnrow, RCH
- GBMLP: Millport, Great Cumbrae, NAY
- GBMLR: Melrose, SCB
- GBMLS: Molesworth, CAM
- GBMLT: Milnathort, PKN
- GBMLU: Melbourne, ERY
- GBMLV: Milngavie, EDU
- GBMLW: Marlow, BKM
- GBMLY: Maltby, ROT
- GBMMA: Mottram Saint Andrew, CHE
- GBMMB: Malmesbury, WIL
- GBMMC: Marston Moretaine, CBF
- GBMMD: Thamesmead, GRE
- GBMME: Teesside, MDB
- GBMMG: Marston Magna, SOM
- GBMMH: Medmenham, BKM
- GBMMI: Balmedie, ABD
- GBMML: Melmerby, CMA
- GBMMO: Monmouth, MON
- GBMMQ: Much Marcle, HEF
- GBMMR: Mossmoran
- GBMMY: Montgomery Trefaldwyn
- GBMN8: Marston, CHW
- GBMNA: Minchinhampton, GLS
- GBMNC: Manchester, MAN
- GBMND: Mundon, ESS
- GBMNE: Montacute, SOM
- GBMNL: Machynlleth, POW
- GBMNN: Manningtree, ESS
- GBMNO: Monkton, SAY
- GBMNP: Milnthorpe, CMA
- GBMNS: Moaness, Hoy, ORK
- GBMNT: Melton Constable, NFK
- GBMNU: Moreton on Lugg, HEF
- GBMNW: Mintlaw, ABD
- GBMNY: Manby, LIN
- GBMOA: Moira, LSB
- GBMOB: Mobberley, CHE
- GBMOC: Morecambe, LAN
- GBMOD: Morden, STN
- GBMOE: Moulsoe, BKM
- GBMOF: Moffat, DGY
- GBMOG: Moorgate, LND
- GBMOL: Mold, FLN
- GBMON: Montrose, ANS
- GBMOO: Muir of Ord, HLD
- GBMOR: Morpeth, NBL
- GBMOS: Moston, MAN
- GBMOT: Moreton, WRL
- GBMOU: Moulton, NTH
- GBMOV: Market Overton, RUT
- GBMOW: Motherwell, NLK
- GBMOY: Moresby, CMA
- GBMPG: Miles Platting, MAN
- GBMPM: Meopham, KEN
- GBMPO: Brampton, CMA
- GBMPT: Bampton, OXF
- GBMQR: Moira, LEC
- GBMRB: Maryfield, Bressay, ZET
- GBMRC: Marchington, STS
- GBMRD: Marden, KEN
- GBMRE: Mere, WIL
- GBMRF: Marfleet, KHL
- GBMRG: Marston Green, SOL
- GBMRH: Markethill, ARM
- GBMRI: Portmeirion, GWN
- GBMRK: Markinch, FIF
- GBMRL: Marlborough, WIL
- GBMRM: Martham, NFK
- GBMRN: Marston, OXF
- GBMRO: Morton, LIN
- GBMRQ: Meriden, SOL
- GBMRR: Moelfre Roads
- GBMRS: Morston, NFK
- GBMRT: Moreton, DOR
- GBMRW: Moor Row, CMA
- GBMRY: Maryport, CMA
- GBMRZ: Marazion, CON
- GBMSA: Measham, LEC
- GBMSC: Manchester Ship Canal, Salford, MAN
- GBMSD: Maitresse Island
- GBMSE: Manston, KEN
- GBMSG: Messingham
- GBMSH: Mousehole, CON
- GBMSI: Great Massingham, NFK
- GBMSJ: Marshland Saint James, NFK
- GBMSL: Hemswell, LIN
- GBMSM: Midsomer Norton, SOM
- GBMSN: Marsden, KIR
- GBMSO: Marlesford, SFK
- GBMSR: Menstrie, CLK
- GBMSS: Mossley Hill, LIV
- GBMST: Misterton, NTT
- GBMSW: Minsterworth, GLS
- GBMSX: Mayfield, ESX
- GBMSY: Embsay, NYK
- GBMTA: Mountain Ash (Aberpennar), RCT
- GBMTB: Milltimber, ABD
- GBMTC: Mitcham, MRT
- GBMTD: Morestead, HAM
- GBMTG: Matching Green, ESS
- GBMTH: Methil, FIF
- GBMTI: Mitton, STS
- GBMTK: Methlick, ABD
- GBMTL: Matlock, DBY
- GBMTM: Mortimer Common, HAM
- GBMTN: Maryton, ANS
- GBMTO: Melton, SFK
- GBMTP: Mablethorpe, LIN
- GBMTR: Montgomery, POW
- GBMTS: Marston, WIL
- GBMTT: Marston Trussell, NTH
- GBMTV: Methven, PKN
- GBMTW: Moortown, LDS
- GBMTY: Mattersey, NTT
- GBMTZ: Mortlake, RIC
- GBMUA: Muasdale
- GBMUD: Maulden, CBF
- GBMUK: Muckamore, ANT
- GBMUL: Mull Apt
- GBMUS: Musselburgh, ELN
- GBMUT: Muthill, PKN
- GBMVC: Moreton Valence, GLS
- GBMVG: Mevagissey, CON
- GBMVL: Minster Lovell, OXF
- GBMVW: Malvern Wells, WOR
- GBMWA: Millwall
- GBMWD: Methwold, NFK
- GBMWE: Market Weighton, ERY
- GBMWG: Mawgan, CON
- GBMWH: Mereworth, KEN
- GBMWI: Marchwiel, WRX
- GBMWK: Much Wenlock, SHR
- GBMWO: Mansfield Woodhouse, NTT
- GBMWY: Saint Michaels On Wyre, LAN
- GBMXB: Mexborough, ROT
- GBMXK: Morley, LDS
- GBMXO: Moore, HAL
- GBMYB: Maybole, SAY
- GBMYD: Merseyside, LIV
- GBMYE: Mid Yell, ZET
- GBMYF: Mayfair, WSM
- GBMYL: Mylor, CON
- GBMYN: Maydown, DRY
- GBMYO: Moy, DGN
- GBMYS: Maylandsea, ESS
- GBMYT: Mytholmroyd, CLD
- GBMYW: Maesycwmmer, CAY
- GBMZB: Leeming Bar, NYK
- GBMZL: Marple, SKP
- GBNAD: Alresford
- GBNAI: Nairn, HLD
- GBNAL: Northallerton, NYK
- GBNAR: Arran, NAY
- GBNAT: Normanton, LEC
- GBNAW: Nawton, NYK
- GBNAY: Newton Aycliffe, DUR
- GBNBA: Newton Abbot
- GBNBC: Newbiggin by the Sea, NBL
- GBNBG: Narborough, LEC
- GBNBH: Narberth, PEM
- GBNBI: Nethy Bridge, HLD
- GBNBN: Nutbourne, WSX
- GBNBR: Narborough, NFK
- GBNBS: Newton by the Sea, NBL
- GBNBT: New Barnet, BNE
- GBNBU: Newburgh, FIF
- GBNBW: North Berwick, ELN
- GBNBY: Newbury, WBK
- GBNCB: North Cadbury, SOM
- GBNCE: Newcastle-under-Lyme, STS
- GBNCL: Newcastle upon Tyne, NET
- GBNCN: Norton Canes, STS
- GBNCP: New Chapel, SRY
- GBNCS: Newcastle, DOW
- GBNCT: Nacton, SFK
- GBNCU: Newchurch, KEN
- GBNCV: North Cave, ERY
- GBNCW: North Crawley, MIK
- GBNCX: New Cross, LEW
- GBNCY: Newcastle Emlyn, CMN
- GBNDE: Neasden, BEN
- GBNDN: Benenden, KEN
- GBNDS: New Duston, NTH
- GBNDY: Sanday, ORK
- GBNEA: Neath, NTL
- GBNEB: Newbold, DBY
- GBNEC: Nesscliffe, SHR
- GBNEF: Nefyn, GWN
- GBNEG: Newton Grange, MLN
- GBNEH: Neap House, NLN
- GBNEN: Newtonmore, HLD
- GBNEO: Saint Neot, CON
- GBNEP: Newport, NWP
- GBNES: Neston, CHW
- GBNEV: Nevern, PEM
- GBNEW: Newton, NTT
- GBNEY: Newby, NYK
- GBNFC: North Finchley, BNE
- GBNFE: North Fambridge, ESS
- GBNFF: Nafferton, ERY
- GBNFI: Ninfield, ESX
- GBNFK: Hoverton, NFK
- GBNFL: Netherfield, NTH
- GBNFO: Wansford, ERY
- GBNFR: Friden
- GBNFT: Northfleet, KEN
- GBNFZ: Norton Fitzwarren, SOM
- GBNGG: Nigg, HLD
- GBNGH: Newborough, STS
- GBNGI: Newbiggin, NBL
- GBNGO: Newington, KEN
- GBNGR: Nantgarw, RCT
- GBNGT: Pollington, ERY
- GBNGW: Newbridge on Wye, POW
- GBNGY: New Galloway, DGY
- GBNH9: Nuthampstead, HRT
- GBNHA: North Hayling, HAM
- GBNHC: North Cove, SFK
- GBNHD: Neatishead, NFK
- GBNHE: Newhouse, NLK
- GBNHF: Nether Heyford, NTH
- GBNHI: Northiam, ESX
- GBNHL: Notting Hill, KEC
- GBNHM: Needham Market, SFK
- GBNHO: New Holland, NLN
- GBNHP: Northampton, NTH
- GBNHS: North Harris, ELS
- GBNHT: Northolt, EAL
- GBNHV: Newhaven, ESX
- GBNHY: North Hykeham, LIN
- GBNIO: Sneinton, NTT
- GBNKH: North Killingholme, NLN
- GBNKT: Newmarket, SFK
- GBNKW: North Kilworth, LEC
- GBNLE: Thornley, DUR
- GBNLF: North Luffenham, LEC
- GBNLH: Northleach, GLS
- GBNLN: Nelson, LAN
- GBNLS: New Mills, POW
- GBNLV: Newton Longville, BKM
- GBNLW: Newton-le-Willows, SHN
- GBNLY: Netherley, ABD
- GBNMA: New Malden, KTT
- GBNMD: Normandy, SRY
- GBNME: Northmavine, ZET
- GBNMK: North Muskham, NTT
- GBNML: Newmilns, EAY
- GBNMN: New Milton, HAM
- GBNMO: Normanton, LIN
- GBNMS: Nomansland, WIL
- GBNMT: North Marston, BKM
- GBNMY: Normans Bay, WSX
- GBNNE: Shenstone, WOR
- GBNNH: Napton on the Hill, WAR
- GBNNM: Newton Mearns, ERW
- GBNNO: Naunton, GLS
- GBNNR: Normanton le Heath, LEC
- GBNNT: Newton Heath, MAN
- GBNO2: Gretton, NTH
- GBNOF: Newton by Toft, LIN
- GBNOH: North Haven, Fair Isle, ZET
- GBNOL: Norwell, NTT
- GBNOM: Northam
- GBNOO: Norton, HEF
- GBNOQ: North Queensferry, FIF
- GBNOR: Normanton, WKF
- GBNOT: Norton, NYK
- GBNPA: Nanpean, CON
- GBNPD: Newport, PEM
- GBNPO: Newport, IOW
- GBNPR: Newport, SHR
- GBNPT: Newport, BGW
- GBNQY: Newquay, CON
- GBNRB: Northbay, ELS
- GBNRC: North Cheam, STN
- GBNRF: North Ferriby, ERY
- GBNRH: Northchapel, WSX
- GBNRL: North Lancing, WSX
- GBNRM: North Walsham, NFK
- GBNRN: New Romney, KEN
- GBNRO: North Ronaldsay, ORK
- GBNRR: North Roe to Hillswick, ZET
- GBNRS: North Ronaldsay Apt, ORK
- GBNRT: Newport, GLS
- GBNRW: Norwich, NFK
- GBNRY: Newry, DOW
- GBNSA: Ness, ELS
- GBNSB: Naseby, NTH
- GBNSD: North Sunderland, NBL
- GBNSE: Nailsea, NSM
- GBNSF: Finsbury/Greater London
- GBNSG: Mountnessing, ESS
- GBNSH: North Shields, NTY
- GBNSN: Neilston, ERW
- GBNSO: Normanton on Soar, NTT
- GBNSR: Newton Solney, DBY
- GBNSS: Thorpeness
- GBNST: Newstead, NTT
- GBNSW: Newton Stewart, DGY
- GBNTA: Newtownabbey, NTA
- GBNTB: Bilsington
- GBNTE: Netherton, DUD
- GBNTF: Newton Ferrers, DEV
- GBNTG: Nottingham, NTT
- GBNTH: Northwich, CHW
- GBNTI: North Tidworth, WIL
- GBNTK: Kirton, LIN
- GBNTL: North Lochs, ELS
- GBNTN: Nuneaton, WAR
- GBNTO: Newton, NTH
- GBNTP: Nether Poppleton, NYK
- GBNTR: Pentre, RCT
- GBNTS: Newtownards, DOW
- GBNTT: Nettlebed, OXF
- GBNTW: Nantwich, CHE
- GBNTY: Bentley
- GBNTZ: North Tawton, DEV
- GBNUI: North Uist, ELS
- GBNUN: Nunthorpe, MDB
- GBNUR: Nursling, HAM
- GBNUT: Newark upon Trent, NTT
- GBNVL: Newton Valence, HAM
- GBNWB: Newbridge, EDH
- GBNWC: Newick, ESX
- GBNWD: Northwood, HIL
- GBNWE: Newent, GLS
- GBNWF: Newhaven/Edinburgh, EDH
- GBNWH: Nailsworth, GLS
- GBNWK: Newark, DGY
- GBNWL: North Weald Bassett/London, ESS
- GBNWM: Newmachar, ABD
- GBNWN: Newtown, IOW
- GBNWO: Newton, CHW
- GBNWP: Newport Pagnell, BKM
- GBNWR: Newbridge, CAY
- GBNWT: Newtown, POW
- GBNWW: Newtownstewart, STB
- GBNWY: New York, LIN
- GBNY2: Buckden, NYK
- GBNYB: Norbury, SHR
- GBNYD: Neyland, PEM
- GBNYH: New Hythe, KEN
- GBNYL: Newlyn, CON
- GBOAK: Oakhamness
- GBOAM: Boreham, ESS
- GBOAR: Oare, WIL
- GBOBA: Oban, AGB
- GBOBM: Ogbourne Maizey, WIL
- GBOBN: South Bank
- GBOBO: Otterbourne, HAM
- GBOBR: Oulton Broad, SFK
- GBOBY: Oldbury, WAR
- GBOCH: Lochs, ELS
- GBOCL: Ockley, SRY
- GBOCT: Brocton, STS
- GBOCY: Offord Cluny, CAM
- GBODD: Oddsta, Fetlar, ZET
- GBODE: Lode, CAM
- GBODH: Oldham, OLD
- GBODL: Old Dalby, LEC
- GBODM: Odiham, HAM
- GBODN: Bordon, HAM
- GBODO: Old Dornie, HLD
- GBODT: Oddington, OXF
- GBOET: Coleorton, LEC
- GBOFT: Carcroft, DNC
- GBOGA: Boningale, SHR
- GBOGB: Oughtibridge, SHF
- GBOGH: Brough, ERY
- GBOGP: Osgathorpe, LEC
- GBOGR: Ongar, ESS
- GBOGT: Bronington, WRX
- GBOHA: Ockham, SRY
- GBOHI: Cross Hills, NYK
- GBOHL: Breedon on the Hill, LEC
- GBOHM: Bosham, WSX
- GBOHN: Old Hutton, CMA
- GBOHT: Shotts, NLK
- GBOHU: Cross Houses, SHR
- GBOKE: Stokeham, NTT
- GBOKG: Oakhanger, HAM
- GBOKH: Okehampton
- GBOKK: Old Kilpatrick, WDU
- GBOKL: Oakley, HAM
- GBOKM: Oakham, LEC
- GBOKW: Oakworth, BRD
- GBOLD: Old, NTH
- GBOLH: Shouldham, NFK
- GBOLL: Coll
- GBOLN: Olney, BKM
- GBOLP: Osterley Park, HNS
- GBOLR: Ollerton, NTT
- GBOLW: Old Woking, SRY
- GBOLY: Holywood, DGY
- GBOMA: Omagh, OMH
- GBOMB: Combe, OXF
- GBOMF: Micklefield, LDS
- GBOMK: Ormskirk, LAN
- GBOML: Osmotherley, NYK
- GBOMN: Old Malton, NYK
- GBOMR: Homerton, LND
- GBOMT: Osmaston, DER
- GBOMU: Oldmeldrum, ABD
- GBOMY: Stondon Massey, ESS
- GBONA: Coddenham, SFK
- GBOND: Oundle, NTH
- GBONE: Portglenone, ANT
- GBONH: Ongar Hill, ESS
- GBONL: Honley, ERY
- GBONS: Shilton, OXF
- GBONT: Cold Norton, ESS
- GBOOK: Hook, HAM
- GBOON: Coton, CAM
- GBOOR: Buntingford, ESX
- GBOOS: Seaton Ross, ERY
- GBOOT: Hooton, CHW
- GBOOY: Old Romney, ESX
- GBOPE: Hope, FLN
- GBOPG: Orpington, BRY
- GBOPP: Coppull, LAN
- GBOPS: Copplestone, DEV
- GBORB: Orby, LIN
- GBORC: Bridge of Orchy, AGB
- GBORH: Orford, SFK
- GBORK: Orkney, ORK
- GBORM: Ormesby, MDB
- GBORN: Carlton on Trent, NTT
- GBORO: Orton, CMA
- GBORP: Orchard Portman, SOM
- GBORR: Corran, AGB
- GBORS: Orston, NTT
- GBORT: Orsett, ESS
- GBORW: Corwen, DEN
- GBOS9: Openshaw, MAN
- GBOSA: Ormesby Saint Margaret, NFK
- GBOSM: Ottery Saint Mary
- GBOSN: Ossington, NTT
- GBOSO: Woolaston, GLS
- GBOSP: Shropshire, SHR
- GBOSS: Ossett, WKF
- GBOSY: Mossley, TAM
- GBOTA: Cotham, NTT
- GBOTC: South Lochs, ELS
- GBOTD: Broxted, ESX
- GBOTF: Old Trafford, MAN
- GBOTG: Gorton, MAN
- GBOTH: Otham, KEN
- GBOTL: Otley, LDS
- GBOTM: Catcott, SOM
- GBOTN: Offerton, SND
- GBOTO: Wollaston, DUD
- GBOTR: Otternish, North Uist, ELS
- GBOTS: Shotts, NLK
- GBOTT: Ottershaw, SRY
- GBOTY: Otley, SFK
- GBOUE: South Elmsall, DNC
- GBOUH: South Brent, DEV
- GBOUK: Outer Skerries, ZET
- GBOUT: Tomintoul, MRY
- GBOVE: Overton, HAM
- GBOVF: Ovenden, DNC
- GBOVR: Over, CAM
- GBOWD: Bowdon, TRF
- GBOWE: Ower, HAM
- GBOWG: Old Whittington, DBY
- GBOWN: Crowan, CON
- GBOWR: Oswestry, SHR
- GBOWS: Bow Street, CGN
- GBOWT: Old Wolverton, MIK
- GBOWW: Oswaldtwistle, LAN
- GBOXD: Oxted, SRY
- GBOXF: Oxford, OXF
- GBOXI: Oxhill, WAR
- GBOXO: Oxton, NTT
- GBOXT: Oxshott, SRY
- GBOYL: Poyle, WBK
- GBOYT: Holytown, NLK
- GBOYW: Holywell, CON
- GBPAB: Pangbourne, WBK
- GBPAD: Padstow, CON
- GBPAE: Pentraeth, AGY
- GBPAG: Paglesham, ESS
- GBPAK: Port Askaig, AGB
- GBPAL: Palnackie, DGY
- GBPAN: Pennant, POW
- GBPAP: Port Appin, AGB
- GBPAR: Par, CON
- GBPAS: Paisley, RFW
- GBPAT: Paddington, KEC
- GBPAY: Paisley, RFW
- GBPBA: Portballintrae, MYL
- GBPBD: Pembridge, HEF
- GBPBH: Pentrebach, MTY
- GBPBI: Pirbright, SRY
- GBPBK: Pinchbeck, LIN
- GBPBL: Parbold, LAN
- GBPBM: Prenton/Birkenhead, WRL
- GBPBR: Perry Barr, BIR
- GBPBY: Spilsby, LIN
- GBPCD: Pencader, CMN
- GBPCG: Pencarreg, CMN
- GBPCI: Pencaitland, ELN
- GBPCK: Peckham, SWK
- GBPCL: Pickhill, NYK
- GBPCO: Porth Colmon
- GBPCR: Puckeridge, HRT
- GBPCT: Prescot, KWL
- GBPCU: Penicuik, MLN
- GBPCW: Porthcawl, BGE
- GBPDD: Pen-Clawdd, SWA
- GBPDE: Pidley, CAM
- GBPDG: Podington, BDF
- GBPDH: Padiham, LAN
- GBPDI: Port Dinorwic, GWN
- GBPDL: Pontardulais, SWA
- GBPDN: Puddletown, DOR
- GBPDO: Peldon, ESS
- GBPDT: Pendleton, LAN
- GBPDW: Paddock Wood, KEN
- GBPDY: Pudsey, LDS
- GBPEA: Penysarn, AGY
- GBPED: Pembroke Dock, PEM
- GBPEE: Peebles, SCB
- GBPEF: Pentre Foelas, CWY
- GBPEG: Port Edgar, EDH
- GBPEL: Pennal
- GBPEM: Pembroke, PEM
- GBPEN: Penzance, CON
- GBPEO: Pennygown, AGB
- GBPEP: Pease Pottage, WSX
- GBPER: Perth, PKN
- GBPES: Pevensey, ESX
- GBPET: Peterborough, CAM
- GBPEV: Papworth Everard, CAM
- GBPEX: Pettistree, SFK
- GBPEY: Penderyn, RCT
- GBPFF: Ponders End, ENF
- GBPFT: Purfleet, ESS
- GBPFY: Portaferry, ARD
- GBPGA: Pagham, WSX
- GBPGD: Port Gordon
- GBPGG: Port Glasgow
- GBPGI: Porthgain, PEM
- GBPGM: Pattingham, STS
- GBPGN: Paignton
- GBPGR: Pamber Green, HAM
- GBPGT: Polegate, ESX
- GBPGV: Port Gaverne, CON
- GBPGW: Pentre-bâch, POW
- GBPHD: Peterhead, ABD
- GBPHG: Potter Heigham, NFK
- GBPHH: Pathhead, MLN
- GBPHM: Parham, SFK
- GBPHO: Pinhoe, DEV
- GBPHR: Capel Hendre, CMN
- GBPHV: Peacehaven, ESX
- GBPHY: Pleshey, ESS
- GBPI7: Pitney, SOM
- GBPIE: Pierowall, Westray, ORK
- GBPIK: Prestwick, SAY
- GBPIL: Pilling, LAN
- GBPIN: Pinner, HRW
- GBPIS: Pitscottie, FIF
- GBPIT: Prittlewell, ESS
- GBPIW: Princetown, DEV
- GBPKA: Portskerra, HLD
- GBPKD: Penkridge, STS
- GBPKG: Park Gate, HAM
- GBPKL: Pocklington, ERY
- GBPKN: Portknockie, MRY
- GBPKR: Pickering, NYK
- GBPKT: Packington, LEC
- GBPKY: Pluckley, KEN
- GBPLA: Penllergaer, SWA
- GBPLC: Pitlochry, PKN
- GBPLD: Polstead, SFK
- GBPLE: Poyle, WNM
- GBPLF: Poulton-Le-Fylde, LAN
- GBPLG: Palmers Green, ENF
- GBPLL: Pollokshields, GLG
- GBPLM: Plumstead, LND
- GBPLN: Port Ellen, AGB
- GBPLO: Plockton, HLD
- GBPLP: Polperro, CON
- GBPLR: Polruan
- GBPLT: Peckleton
- GBPLV: Porthleven, CON
- GBPLW: Plaistow, WSX
- GBPLX: Pulloxhill, CBF
- GBPLY: Plymouth
- GBPMB: Pembury, KEN
- GBPMD: Portmadoc, GWN
- GBPME: Portsmouth, HAM
- GBPMG: Plumpton Green, ESX
- GBPMH: Peasmarsh, ESX
- GBPMI: Pirnmill, NAY
- GBPMK: Portmahomack, HLD
- GBPMM: Penmaenmawr, GWN
- GBPMO: Portmore, HAM
- GBPMR: Port Mor, Muck, HLD
- GBPMS: Peasmarsh, SRY
- GBPMT: Plympton
- GBPMY: Pembrey, PEM
- GBPNA: Patna, EAY
- GBPNB: Penberth, CON
- GBPNC: Pontyclun, RCT
- GBPND: Pencoed, BGE
- GBPNE: Pendeen
- GBPNG: Portnalong, HLD
- GBPNH: Penarth, VGL
- GBPNI: Pensilva, CON
- GBPNL: Ponteland, NBL
- GBPNN: Penn, BKM
- GBPNO: Prenton, WRL
- GBPNP: Perranporth, CON
- GBPNR: Penrith, CMA
- GBPNS: Penistone, BNS
- GBPNT: Pontllanfraith, CAY
- GBPNV: Portnahaven
- GBPNY: Pontypridd, RCT
- GBPOA: Pontardawe, NTL
- GBPOB: Potters Bar, HRT
- GBPOC: Port Clarence, STT
- GBPOE: Potterton, ABD
- GBPOF: Pontefract, WKF
- GBPOG: Port Logan
- GBPOH: Porthoustock, CON
- GBPOI: Point, Island of Lismore, AGB
- GBPOL: Polebrook, NTH
- GBPOM: Pomeroy, DGN
- GBPON: Potterne, WIL
- GBPOO: Poole, DOR
- GBPOP: Potton, CBF
- GBPOR: Porth, RCT
- GBPOT: Portlethen, ABD
- GBPOY: Poynton, CHE
- GBPPC: Peapack, SOM
- GBPPE: Port Penrhyn, GWN
- GBPPG: Pipe Gate, SHR
- GBPPK: Portpatrick, DGY
- GBPPL: Poplar, TWH
- GBPPO: Saint Peter Port
- GBPPS: Prestonpans, ELN
- GBPPW: Papa Westray, ORK
- GBPPY: Paulerspury, NTH
- GBPQL: Pool, LDS
- GBPQT: Bishopsteignton, DEV
- GBPRB: Preston Brook, CHE
- GBPRC: Portchester, HAM
- GBPRD: Prudhoe, NBL
- GBPRE: Preston, LAN
- GBPRF: Patricroft, MAN
- GBPRG: Partridge Green, WSX
- GBPRH: Portland Harbour, DOR
- GBPRJ: Portreath, CON
- GBPRK: Portskewett, MON
- GBPRL: Portloe, CON
- GBPRN: Portnaguran and Ness, ELS
- GBPRO: Purton, WIL
- GBPRP: Portincaple, AGB
- GBPRR: Princes Risborough, BKM
- GBPRS: Prestatyn, DEN
- GBPRT: Portree, HLD
- GBPRU: Portbury, NSM
- GBPRV: Perivale, EAL
- GBPRW: Prestwich, BUR
- GBPRY: Penryn, CON
- GBPRZ: Porlock, SOM
- GBPSA: Preesall, LAN
- GBPSB: Sutton Bridge, LIN
- GBPSC: Portscatho, CON
- GBPSE: Port Seton, ELN
- GBPSG: Presteigne, POW
- GBPSH: Pershore, WOR
- GBPSI: Pott Shrigley, CHE
- GBPSM: Port Saint Mary
- GBPSO: Preston, KEN
- GBPSR: Pensarn, CMN
- GBPST: Parkeston Quay, ESS
- GBPSU: Port Sunlight, WRL
- GBPSV: Papa Stour
- GBPSW: Portstewart, CLR
- GBPSY: Portsoy, ABD
- GBPT2: Pitstone, BKM
- GBPT5: Polesworth, WAR
- GBPTA: Pettinain, SLK
- GBPTB: Port Talbot, NTL
- GBPTC: Pettycur, FIF
- GBPTD: Porthmadog, GWN
- GBPTE: Peterlee, DUR
- GBPTF: Petersfield, HAM
- GBPTG: Porthgwarra, CON
- GBPTH: Portishead, NSM
- GBPTI: Pontrilas, HRT
- GBPTL: Portland, DOR
- GBPTN: Puttenham, SRY
- GBPTO: Petworth, WSX
- GBPTP: Pontypool, TOF
- GBPTR: Portrush, ANT
- GBPTS: Portslade, ESX
- GBPTT: Partington, TRF
- GBPTW: Portadown, ARM
- GBPTX: Porton, WIL
- GBPTY: Putney, WND
- GBPUL: Pulborough, WSX
- GBPUN: Purtington, SOM
- GBPUR: Purley, WND
- GBPVD: Portavadie, AGB
- GBPVG: Portavogie, ARD
- GBPW5: Plowden, SHR
- GBPWC: Spaldwick, CAM
- GBPWD: Prestwood, BKM
- GBPWE: Poolewe, HLD
- GBPWI: Port William, DGY
- GBPWK: Portwrinkle, CON
- GBPWL: Pwllheli, GWN
- GBPWM: Pittenweem, FIF
- GBPWS: Pewsey, WIL
- GBPWT: Padworth, WBK
- GBPWY: Patchway, SGC
- GBPXT: Plaxtol, KEN
- GBPYA: Park Royal, LND
- GBPYB: Pye Bridge, DBY
- GBPYC: Pen-y-cae, POW
- GBPYE: Poyle, BKM
- GBPYG: Poyntington, DOR
- GBPYL: Pyle, BGE
- GBPYR: Pyrford, SRY
- GBQBG: Queniborough, LEC
- GBQDL: Quedgeley, GLS
- GBQFR: Queensferry, FLN
- GBQGO: Quenington, GLS
- GBQGT: Wallesbourne Hastings, WAR
- GBQLA: Lasham, HAM
- GBQLT: Elton, CHW
- GBQMV: Bruton, SOM
- GBQRA: Bartley, HAM
- GBQTN: Quainton, BKM
- GBQUB: Queenborough, KEN
- GBQUY: Wyton, CAM
- GBQVG: Sandgate, KEN
- GBQVY: South Lancing, WSX
- GBQWH: Swadlincote, DBY
- GBQWR: Bishops Castle, SHR
- GBQWY: Wyboston, BDF
- GBQZL: Clevedon, NSM
- GBRAA: Arnish, HLD
- GBRAD: Radley, OXF
- GBRAH: Rainham, HAV
- GBRAK: Rake, WSX
- GBRAL: Rednal, SHR
- GBRAM: Rawmarsh, ROT
- GBRAN: Rayne, ESS
- GBRAP: Rapness, Westray, ORK
- GBRAS: Clachan, Raasay, HLD
- GBRAT: Rathfriland, NYM
- GBRAV: Ravensthorpe Dewsbury, KIR
- GBRAW: Rawtenstall, LAN
- GBRAY: Rothesay, Isle of Bute, AGB
- GBRBB: Robin Hoods Bay, NYK
- GBRBD: Rawcliffe Bridge, ERY
- GBRBG: Redbridge/London, HAM
- GBRBH: Roborough, DEV
- GBRBL: Erribol, HLD
- GBRBN: Redbourn, HRT
- GBRBO: Roberttown, ERY
- GBRBR: Robertsbridge, ESX
- GBRBS: Wrabness, ESS
- GBRBT: Ribbleton, LAN
- GBRBU: Redbourne, NLN
- GBRBY: Rubery, WOR
- GBRCB: Rhu Coigach - Badluachrach, HLD
- GBRCD: Bracadale, HLD
- GBRCE: Piercebridge, DAL
- GBRCH: Richmond, NYK
- GBRCK: Bricket Wood, HRT
- GBRCL: Riccall, NYK
- GBRCR: Rocester, STS
- GBRCS: Rochester, KEN
- GBRCT: Tonyrefail, RCT
- GBRCU: Richmond upon Thames, RIC
- GBRDA: Rossendale, LAN
- GBRDB: Redbourn, LIN
- GBRDC: Radcliffe, BUR
- GBRDD: Redditch, WOR
- GBRDF: Redford, ANS
- GBRDG: Riddings, DBY
- GBRDH: Rudh Re - Red Point, HLD
- GBRDI: Redding, FAL
- GBRDL: Radlett, HRT
- GBRDM: Ridgmont, CBF
- GBRDN: Reading, RDG
- GBRDO: Ruddington, NTT
- GBRDQ: Ramsden Heath, ESS
- GBRDS: Reddish, SKP
- GBRDT: Randalstown, ANT
- GBRDW: Rawdon, YOR
- GBRDX: Ruardean, GLS
- GBRDY: Ardley, OXF
- GBREA: Reay, HLD
- GBREB: Redcliff Bay, NSM
- GBRED: Red Bay, ANT
- GBREE: Kings Bromley, STS
- GBREH: Redhill, SRY
- GBREJ: Rejerrah, CON
- GBREL: Rednal, BIR
- GBREM: Reedham, NFK
- GBREN: Renfrew, RFW
- GBRER: Redcar, RCC
- GBRES: Prees, SHR
- GBREV: Braevig
- GBREY: Rugeley, STS
- GBRFD: Rochford, ESS
- GBRFF: Roecliffe, NYK
- GBRFL: Brimfield, HEF
- GBRFO: Retford, NTT
- GBRFR: Rock Ferry, WRL
- GBRG9: Rougham, NFK
- GBRGA: Raglan, MON
- GBRGC: Rhos-Goch, POW
- GBRGH: Burgh
- GBRGI: Rowlands Gill, DUR
- GBRGL: Ravenglass, CMA
- GBRGM: Riding Mill, NBL
- GBRGN: Mid Glamorgan, ESX
- GBRGO: Roughton, NFK
- GBRGP: Regent's Park, WSM
- GBRGR: Ringmer, ESX
- GBRGT: Reigate, SRY
- GBRGV: Redgrave, SFK
- GBRGY: Haringey, LND
- GBRHB: Rhubodach, Isle of Bute, AGB
- GBRHD: Cross Hands, CMN
- GBRHE: Rudheath, CHW
- GBRHG: Rhigos, RCT
- GBRHI: Rhilochan, HLD
- GBRHL: Bar Hill, CAM
- GBRHM: Rendlesham, SFK
- GBRHN: Ruthin, DEN
- GBRHO: Rhondda, RCT
- GBRHS: Rhôs-on-Sea, CWY
- GBRHT: Rishton, LAN
- GBRHU: Rhu, AGB
- GBRHW: Rothwell, NTH
- GBRHY: Rhyl, DEN
- GBRIC: Richborough, KEN
- GBRID: Ridham Dock, KEN
- GBRIE: Scourie, HLD
- GBRIG: Tendring, OXF
- GBRIH: Brierley Hill, DUD
- GBRIL: Risley, DBY
- GBRIN: Ringstead, NFK
- GBRIP: Ripon, NYK
- GBRIS: Risley, LAN
- GBRIW: Ringwood, HAM
- GBRKB: Rooks Bridge, SOM
- GBRKO: Ruskington, LIN
- GBRKW: Rickmansworth, HRT
- GBRLA: Rosslea, FER
- GBRLB: Barlby, NYK
- GBRLD: Rolvenden, KEN
- GBRLG: Bar Light
- GBRLH: Rayleigh, ESS
- GBRLL: Rothwell, YOR
- GBRLO: Red Lodge, SFK
- GBRLP: Royal Leamington Spa, WAR
- GBRLS: Rattlesden, SFK
- GBRLW: Carloway, HLD
- GBRLY: Ropley, HAM
- GBRMB: Ramsbottom, BUR
- GBRMD: Ramsey Mereside, CAM
- GBRME: Rosemarkie, HLD
- GBRMF: Romford, HAV
- GBRMG: Ramsgate, KEN
- GBRML: Ramsdell, HAM
- GBRMO: Rhosesmor, FLN
- GBRMP: Brampton, ROT
- GBRMS: Romsey, HAM
- GBRMY: Redmarley D'Abitot, GLS
- GBRNA: Rainham, KEN
- GBRNC: Brinscall, LAN
- GBRNE: Rhosneigr, AGY
- GBRNF: Rainford, SHN
- GBRNG: Rustington, WSX
- GBRNH: Rainhill, SHN
- GBRNN: Bernera (N Uist), ELS
- GBRNO: Cronton, HAL
- GBRNR: Bernera (Lewis), ELS
- GBRNS: Ranskill, NTT
- GBRNT: Radcliffe on Trent, NTT
- GBRNW: Ross-on-wye, HEF
- GBROA: Roade, NTH
- GBROB: Roybridge, HLD
- GBROC: Rock, CON
- GBROE: Brome, SFK
- GBROG: Rogerstone, NWP
- GBROH: Roche, CON
- GBROI: Roslin, MLN
- GBROK: Rockcliffe, CMA
- GBROL: Rochdale, RCH
- GBROM: Romney Marsh, KEN
- GBRON: Staverton, GLS
- GBROR: Rostrevor, DOW
- GBROS: Royston, HRT
- GBROT: Rothes, MRY
- GBROU: Rousay, ORK
- GBROW: Rowhedge, ESS
- GBROY: Rosyth, FIF
- GBRPC: Rushton Spencer, STS
- GBRPE: Ripley, SRY
- GBRPH: Reepham
- GBRPP: Ripponden, CLD
- GBRPT: Brampton, NFK
- GBRPY: Ripley, DBY
- GBRRB: Garrabost, ELS
- GBRRD: River Dart, DEV
- GBRRG: Ferring, WSX
- GBRRI: Cerrigdrudion, CWY
- GBRRK: Drybrook, GLS
- GBRRN: Carron, MRY
- GBRRO: Carron, HLD
- GBRRR: Eardiston, SHR
- GBRRS: Henstridge, SOM
- GBRRU: Redruth, CON
- GBRRW: Rotherwas
- GBRRY: Derry, DRY
- GBRS8: Rhoose, VGL
- GBRSB: Birsay, ORK
- GBRSC: Risca, CAY
- GBRSD: Rossington, DNC
- GBRSE: Riseley, WBK
- GBRSG: Rushlake Green, ESX
- GBRSH: Rosneath, AGB
- GBRSK: Radstock, BAS
- GBRSL: Thundersley, ESS
- GBRSN: Rushton, NTH
- GBRSP: Rusper, WSX
- GBRSR: Baston, LIN
- GBRSS: Ross, DGY
- GBRST: Breasclete, ELS
- GBRSW: Berkswell, SOL
- GBRSY: Ramsey, CAM
- GBRTA: Wretham, NFK
- GBRTD: Ryton on Dunsmore, WAR
- GBRTE: Rostherne, CHE
- GBRTG: Bruntingthorpe, LEC
- GBRTH: Rotherham, ROT
- GBRTL: Port Erroll, ABD
- GBRTN: Royton, OLD
- GBRTO: Rettendon, ESS
- GBRTR: Rotherfield, ESX
- GBRTT: Rossett, WRX
- GBRTV: Rostrevor, NYM
- GBRTW: Royal Tunbridge Wells, KEN
- GBRTY: Rosehearty, ABD
- GBRU7: Rye Harbour, ESX
- GBRUA: Ruanaich, AGB
- GBRUD: Raunds, NTH
- GBRUG: Rugby, WAR
- GBRUH: Rushock, HEF
- GBRUI: Ruislip, HIL
- GBRUK: Rushock, WOR
- GBRUL: Rushall, WLL
- GBRUM: Ruan Minor, CON
- GBRUN: Runcorn, HAL
- GBRUS: Rushden, NTH
- GBRUT: Rutherglen, SLK
- GBRUV: Ruthven, ANS
- GBRUW: Ruabon, WRX
- GBRVD: Ravenfield, ROT
- GBRVF: River Fowey, CON
- GBRVH: Ravensthorpe, ERY
- GBRWA: Barway, CAM
- GBRWE: Rowledge, SRY
- GBRWH: Braiseworth, SFK
- GBRWL: Rosewell, MLN
- GBRWN: Rowardennan, STG
- GBRWO: Cornwood, DEV
- GBRWR: Rawreth, ESS
- GBRWS: Wetheringsett, SFK
- GBRWY: Crawley, OXF
- GBRXG: Roxburgh, SCB
- GBRXN: Rixton, WRT
- GBRY9: Risby, SFK
- GBRYA: Rhayader, POW
- GBRYD: Ryde, IOW
- GBRYE: Rye, ESX
- GBRYG: Radway Green, CHE
- GBRYH: Ryhope, SND
- GBRYI: Rhynie, ABD
- GBRYL: Reynoldston, SWA
- GBRYM: Rhydymwyn, FLN
- GBRYN: Ryton, GAT
- GBRYO: Reydon, SFK
- GBRYR: Rowley Regis/West Bromwich, SAW
- GBRYY: Rhymney, CAY
- GBS2T: Stone, WOR
- GBS3R: Kidwelly, CMN
- GBS7X: Sharnford, LEC
- GBSAA: Southend-on-Sea, ESS
- GBSAB: Sabden, LAN
- GBSAC: Sancreed, CON
- GBSAD: Sandford, DEV
- GBSAE: Sale, TRF
- GBSAG: Saint Agnes, CON
- GBSAH: Standish, WGN
- GBSAI: Shanklin, IOW
- GBSAJ: Sanquhar, DGY
- GBSAK: Stocklake, BKM
- GBSAL: Saltby, LEC
- GBSAM: Samlesbury, LAN
- GBSAN: Sandbach, CHE
- GBSAO: Stratton
- GBSAR: Star, FIF
- GBSAS: Sawston, CAM
- GBSAT: Saltash, CON
- GBSAU: Saundersfoot, PEM
- GBSAV: Stratford-upon-Avon, WAR
- GBSAW: Saffron Walden, ESS
- GBSAX: Saxham, SFK
- GBSAY: Swanley, KEN
- GBSB3: Sherburn, NYK
- GBSBA: Stapleford Abbots, ESS
- GBSBC: Severn Beach, SGC
- GBSBD: Stockbridge, HAM
- GBSBE: Saint Boswells, SCB
- GBSBF: South Benfleet, ESS
- GBSBG: Stocksbridge, SHF
- GBSBH: Sible Hedingham, BDF
- GBSBI: Stowbridge, NFK
- GBSBK: Scarisbrick, LAN
- GBSBL: Sherburn in Elmet, NYK
- GBSBM: Sharpthorne, WSX
- GBSBN: Sherburn, DUR
- GBSBO: Sutton Bonnington, NTT
- GBSBQ: Stonebroom, DBY
- GBSBR: Shrewsbury, SHR
- GBSBS: Borrowstounness, FAL
- GBSBT: Stubbington, HAM
- GBSBU: Stainburn, NYK
- GBSBW: Newtown Saint Boswells, SCB
- GBSBY: Sunbury, SRY
- GBSCA: Scarborough, NYK
- GBSCB: Salcombe, DEV
- GBSCC: Scalpay, Outer Hebridies, ELS
- GBSCE: Shenley Church End
- GBSCF: Scapa, ORK
- GBSCG: Scalasaig, Colonsay, AGB
- GBSCH: Stockinish, ELS
- GBSCK: Stockton, SHR
- GBSCL: Saint Clears, CMN
- GBSCM: Saint Combs and Charleston, ABD
- GBSCN: Scarinish, Tiree, AGB
- GBSCO: Sconser, Isle of Skye, HLD
- GBSCP: Scunthorpe, NLN
- GBSCR: Scrabster, HLD
- GBSCS: Scatsta
- GBSCT: Stockton, HEF
- GBSCW: Saint Nicholas at Wade, KEN
- GBSCY: Stirchley, SHR
- GBSD5: Sandtoft, NLN
- GBSDA: Studham, CBF
- GBSDB: Swinderby, LIN
- GBSDC: Sidcup, BEX
- GBSDD: Senghenydd, CAY
- GBSDE: Saint Dennis, CON
- GBSDG: Stourbridge, DUD
- GBSDH: South Tidworth, HAM
- GBSDI: Sandiacre, DBY
- GBSDK: Stradbroke, SFK
- GBSDL: Snodland, KEN
- GBSDM: Sidmouth
- GBSDN: Shildon, DUR
- GBSDO: Sandown, IOW
- GBSDP: Salford Priors, WAR
- GBSDQ: Sheldon, BIR
- GBSDR: Sanderstead, SRY
- GBSDS: Sandside, HLD
- GBSDT: Bradstone, DEV
- GBSDU: Sampford Arundel, SOM
- GBSDV: Seaton Delaval, NBL
- GBSDW: Sandwich, KEN
- GBSDX: Stroud, GLS
- GBSDY: Sandy, CBF
- GBSEA: Seaham, DUR
- GBSEB: Send, SRY
- GBSEC: Southend, AGB
- GBSED: Salt End, ERY
- GBSEE: Seamer, NYK
- GBSEF: Seaforth, SFT
- GBSEG: Sherfield English, HAM
- GBSEH: Sedbergh, CMA
- GBSEI: Shieldhall, GLG
- GBSEL: Stow on the Wold, GLS
- GBSEM: Saint Peter South Elmham, NFK
- GBSEN: Southend Municipal Apt, ESS
- GBSEO: Selsdon, CRY
- GBSEP: Speen, WBK
- GBSER: Snetterton, NFK
- GBSES: Sidlesham, WSX
- GBSET: Settle, NYK
- GBSEV: Sevenoaks, KEN
- GBSEW: Sheldwich, KEN
- GBSEY: Semley, WIL
- GBSEZ: Sheen, STS
- GBSF3: Kettleburgh, SFK
- GBSF5: Scarcliffe, DBY
- GBSFD: Stretford, TRF
- GBSFE: Stoke Ferry, NFK
- GBSFF: Sheriff Hutton, YOR
- GBSFI: Swallowfield, WBK
- GBSFK: Scarfskerry, HLD
- GBSFL: Stotfold, HRT
- GBSFM: South Luffenham, RUT
- GBSFO: Stapleford, NTT
- GBSFR: Seaford, ESX
- GBSFS: Salfords, SRY
- GBSFT: Sandford On Thames, OXF
- GBSFU: Stuartfield, ABD
- GBSFV: Stanford in the Vale, OXF
- GBSFW: Scapa Flow, ORK
- GBSFY: Salford, SLF
- GBSGC: Badminton, SGC
- GBSGD: Sunningdale, WNM
- GBSGE: Sedgefield, DUR
- GBSGF: Shillingford, OXF
- GBSGH: Seighford, STS
- GBSGI: Seghill, NBL
- GBSGL: Sunninghill, SRY
- GBSGM: Sheringham, NFK
- GBSGN: Seer Green, BKM
- GBSGO: Stoke Golding, LEC
- GBSGP: Saint Margaret's Hope
- GBSGR: Crossgar, DOW
- GBSGT: Stillington, NYK
- GBSGU: Stanground, CAM
- GBSGV: Skinningrove
- GBSGY: South Gyle, EDH
- GBSH2: Sharston, MAN
- GBSHA: Shrivenham, OXF
- GBSHB: Shaftesbury, DOR
- GBSHC: Stinchcombe, GLS
- GBSHD: South Darenth, KEN
- GBSHE: Sheffield, SHF
- GBSHF: Shefford, BDF
- GBSHG: South Hayling, HAM
- GBSHH: Shipdham, NFK
- GBSHI: Shipley, BRD
- GBSHJ: South Hykeham, LIN
- GBSHK: Southwick, WSX
- GBSHL: Shenfield, ESS
- GBSHM: Shepton Mallet, SOM
- GBSHN: Shandon, AGB
- GBSHO: Shoreham, KEN
- GBSHP: Shepherds Bush, HMF
- GBSHQ: South Heighton, ESX
- GBSHR: Sherborne, DOR
- GBSHS: Sheerness, KEN
- GBSHT: Shotton, DUR
- GBSHU: Seahouses, NBL
- GBSHV: Shell Haven, ESS
- GBSHW: Shaw, OLD
- GBSHX: Shieldaig, HLD
- GBSHY: Saint Helens, SHN
- GBSHZ: Saint Harmon, POW
- GBSIA: Shere, SRY
- GBSIC: Salwick, LAN
- GBSID: Snape Bridge
- GBSIE: Shillingstone, DOR
- GBSIG: Stirling, STG
- GBSIH: Saint Athan, VGL
- GBSII: Swillington, ERY
- GBSIK: Southwick, WIL
- GBSIL: Silloth, CMA
- GBSIM: South Witham, LIN
- GBSIN: Singleton, LAN
- GBSIO: Shirebrook, DBY
- GBSIP: Stocking Pelham, HRT
- GBSIR: Saint Lawrence, CON
- GBSIT: Sittingbourne, KEN
- GBSIV: Saint Ive, CON
- GBSIW: Snailwell, CAM
- GBSIY: Shirley, DBY
- GBSJJ: Small Heath, BIR
- GBSJL: Strangford, DOW
- GBSJU: Saint Just, CON
- GBSJY: Studland, DOR
- GBSKC: Stoke Canon, DEV
- GBSKD: Skelmersdale, LAN
- GBSKE: Skegness, LIN
- GBSKG: Stoke Gifford, SGC
- GBSKH: Stokenchurch, BKM
- GBSKI: Skipton, NYK
- GBSKK: Selkirk, SCB
- GBSKL: Skelton, ERY
- GBSKM: Skelmorlie, NAY
- GBSKN: South Cornelly, BGE
- GBSKO: Shackleford, SRY
- GBSKP: Skipton on Swale, NYK
- GBSKR: Skerray, HLD
- GBSKT: Skelton, RCC
- GBSKU: Stoke-sub-Hambon, SOM
- GBSKV: Saint Keverne, CON
- GBSKW: Skewen, NTL
- GBSKY: Isle of Skye Apt
- GBSKZ: Skeld, ZET
- GBSLA: Saint Leonards, ESX
- GBSLB: Selby, NYK
- GBSLC: Saltcoats, NAY
- GBSLD: Stockland
- GBSLE: Sleaford, LIN
- GBSLF: Shelf, CLD
- GBSLG: Stallingborough, NEL
- GBSLH: Stanford-le-Hope, THR
- GBSLI: Slinfold, WSX
- GBSLK: Shiplake, OXF
- GBSLL: Southall, EAL
- GBSLM: Steeple Morden, CAM
- GBSLN: Saltburn-by-the-Sea, RCC
- GBSLO: Slough, SLG
- GBSLP: South Ruislip Ward, HIL
- GBSLR: Silchester, HAM
- GBSLS: Salisbury, WIL
- GBSLT: Saltney, FLN
- GBSLV: Solva (Solfach), PEM
- GBSLW: Slawston, LEC
- GBSLX: Saltley, BIR
- GBSLY: Sileby, LEC
- GBSLZ: Shelton, NFK
- GBSMA: Saint Marys Bay, KEN
- GBSMB: Somersby, LIN
- GBSMC: Saint Monance (Saint Monans), FIF
- GBSMD: Small Dole, WSX
- GBSME: Smethwick, SAW
- GBSMF: Smallfield, SRY
- GBSMG: Stratton Saint Margaret, SWD
- GBSMH: Saint Margaret's Hope, South Ronaldsay, ORK
- GBSMI: South Mimms, HRT
- GBSML: Stramshall, STS
- GBSMM: Saint Michael's Mount, CON
- GBSMN: Saint Martin, CON
- GBSMO: Simonstone, LAN
- GBSMP: Saint Sampson (Golant), CON
- GBSMR: Somerton, SOM
- GBSMS: South Marston, WIL
- GBSMT: Smarden, KEN
- GBSMU: Summercourt, CON
- GBSMV: Saint Mawes, CON
- GBSMW: Simonswood, LAN
- GBSMY: Saint Marys Hoo, KEN
- GBSNB: Sutton Benger, WIL
- GBSNC: Sennen Cove, CON
- GBSND: Southend, ESS
- GBSNE: Stoke Newington, HCK
- GBSNF: Sandycroft, FLN
- GBSNG: Singleton, WSX
- GBSNH: Stanton Harcourt, OXF
- GBSNI: Sandringham, NFK
- GBSNJ: Sand, ZET
- GBSNK: Sandness, ZET
- GBSNL: Stanley, DUR
- GBSNM: Stanmore, WBK
- GBSNN: Swindon, WIL
- GBSNO: South Normanton, DBY
- GBSNR: South Norwood, CRY
- GBSNS: Stromness, ORK
- GBSNT: Saint Neots, CAM
- GBSNU: Stanton uder Bardon, LEC
- GBSNV: Saint Minver, CON
- GBSNW: Saint Andrews, FIF
- GBSNY: Stoke by Nayland, SFK
- GBSNZ: Stretton, WRT
- GBSOA: Stroma, HLD
- GBSOB: Southborough, KEN
- GBSOC: Stocksfield, NBL
- GBSOD: Stapleford, CAM
- GBSOE: Stoke, CHW
- GBSOF: Southfleet, KEN
- GBSOH: Southam, WAR
- GBSOK: South Kirkby, WKF
- GBSOL: Solihull, SOL
- GBSOM: Somercotes, DBY
- GBSON: Standon, STS
- GBSOO: South Ockendon, ESS
- GBSOP: Stanhope, DUR
- GBSOQ: South Queensferry, EDH
- GBSOR: Stourton, WIL
- GBSOS: Saint Osyth, ESS
- GBSOT: Stoke on Trent, STS
- GBSOU: Southampton, HAM
- GBSOW: Stanlow, SHR
- GBSOX: Stanton, SFK
- GBSOY: Stronsay
- GBSPA: Spalding, LIN
- GBSPB: Steeple Bumpstead, ESS
- GBSPD: Shepshed, LEC
- GBSPE: Spellbrook, HRT
- GBSPF: Stapleford, WIL
- GBSPG: Stoke Poges, BKM
- GBSPH: Saint Asaph, DEN
- GBSPI: Sandhaven and Pitullie, ABD
- GBSPK: Speke, LIV
- GBSPL: Stapleton, LEC
- GBSPM: Shipham, SOM
- GBSPN: Spennymoor, DUR
- GBSPO: Spondon, DBY
- GBSPP: Shepperton, SRY
- GBSPQ: Stackpole Quay, PEM
- GBSPR: Sparkford, SOM
- GBSPS: Stourport on Severn, WOR
- GBSPT: Sompting, WSX
- GBSPU: Sherbourne, WAR
- GBSPW: Spencers Wood, WOK
- GBSPY: Shapinsay, ORK
- GBSQK: Saint Martins, CON
- GBSQN: Sonning, WOK
- GBSQW: Sway, HAM
- GBSQZ: Scampton, LIN
- GBSRA: Strathdon, ABD
- GBSRB: Somerby, LEC
- GBSRC: Strathcarron, HLD
- GBSRD: Stafford, STS
- GBSRE: Sutton on Trent, NTT
- GBSRF: Seacroft, NYK
- GBSRG: Sundridge, KEN
- GBSRH: Strathaird, HLD
- GBSRI: Stalbridge, DOR
- GBSRK: Sharnbrook, BDF
- GBSRL: Shoreditch, HCK
- GBSRN: Storrington, WSX
- GBSRO: Scropton, DBY
- GBSRP: Shropham, NFK
- GBSRQ: Southerness, DGY
- GBSRR: Sturminster Newton, DOR
- GBSRS: Sherston, WIL
- GBSRT: Southport, SFT
- GBSRU: Sarisbury, HAM
- GBSRW: Shardlow, LEC
- GBSRX: Sark
- GBSRY: South Ronaldsay, ORK
- GBSRZ: Strete, DEV
- GBSSA: Stanstead Abbots, HRT
- GBSSB: Stoke Saint Gregory, SOM
- GBSSC: Seascale, CMA
- GBSSD: Silsden, BRD
- GBSSE: Pleasley, NTT
- GBSSG: Sissinghurst, KEN
- GBSSH: South Shields, STY
- GBSSJ: Sutton Saint James, LIN
- GBSSK: Shiskine, NAY
- GBSSL: Stokesley, NYK
- GBSSM: Stanstead Mountfitchet, ESS
- GBSSN: Stevenston, NAY
- GBSSP: Saint Stephen, CON
- GBSSR: Southminster, ESS
- GBSSS: Sharpness, GLS
- GBSST: Shenstone, STS
- GBSSU: Shipston on Stour, WAR
- GBSSW: Cresswell, STS
- GBSSY: Selsey, WSX
- GBST2: Stechford, BIR
- GBST3: Stalmine, LAN
- GBST7: Southgate, ENF
- GBSTA: Southwater, WSX
- GBSTB: Strabane, STB
- GBSTC: South Cave, ERY
- GBSTD: Strood, KEN
- GBSTE: Street, SOM
- GBSTF: Stratford, NWM
- GBSTG: Seething, NFK
- GBSTH: Salthouse, NFK
- GBSTI: Saint Ives, CAM
- GBSTJ: Stoneleigh, WAR
- GBSTK: Stockport, SKP
- GBSTL: Saint Austell, CON
- GBSTM: Stanmore, HRW
- GBSTN: Stansted Apt/London, ESS
- GBSTO: Stornoway, ELS
- GBSTP: Staple Hill, SGC
- GBSTQ: Saint Quivox, SAY
- GBSTR: Stranraer, DGY
- GBSTS: Staines, SRY
- GBSTT: Stockton-on-Tees, STT
- GBSTU: Studley, WAR
- GBSTV: Stevenage, HRT
- GBSTW: Stowmarket, SFK
- GBSTX: Stone, STS
- GBSTY: Stalybridge, TAM
- GBSTZ: Staithes, NYK
- GBSUA: Sutton in Ashfield, NTT
- GBSUB: Sandhurst, BRC
- GBSUC: Sutton Coldfield, BIR
- GBSUD: Sudbury, SFK
- GBSUE: Southwell, NTT
- GBSUH: Spurn Head
- GBSUI: Southwick, HAM
- GBSUK: South Creake, NFK
- GBSUL: Sullom Voe, ZET
- GBSUM: South Molton, DEV
- GBSUN: Sunderland, SND
- GBSUO: Sutton, CAM
- GBSUP: South Petherton, SOM
- GBSUQ: Stowe Bucks, BKM
- GBSUR: Surbiton, KTT
- GBSUS: Sutton, STN
- GBSUT: South Arne
- GBSUU: Soulbury, BKM
- GBSUV: Sutton Valence, KEN
- GBSUW: Southowram, CLD
- GBSUY: Sully, VGL
- GBSVE: Silverton
- GBSVG: Shavington, CHE
- GBSVI: Sevington, KEN
- GBSVK: Seven Kings, RDB
- GBSVL: Staunton in the Vale, LEC
- GBSVN: Stonehaven, ABD
- GBSVR: Staverton, WIL
- GBSVS: Saint David's, PEM
- GBSVT: Silvertown
- GBSVW: Seaview, IOW
- GBSVX: Staveley, CMA
- GBSVY: Staveley, DBY
- GBSVZ: Saint Mary's, CON
- GBSW4: Swavesey, CAM
- GBSW8: Swindon, SWD
- GBSWA: Swansea, SWA
- GBSWB: Swanscombe, KEN
- GBSWC: Sandwick, ZET
- GBSWD: Southwold, SFK
- GBSWE: Swanage, DOR
- GBSWF: South Woodham Ferrers, ESS
- GBSWG: Swatragh, MFT
- GBSWH: Swaffham
- GBSWI: South Wigston, LEC
- GBSWJ: Stanwick, NTH
- GBSWK: Swanwick, HAM
- GBSWL: Stanwell, SRY
- GBSWM: Swanmore, HAM
- GBSWN: Swinton, SLF
- GBSWO: South Weston, OXF
- GBSWR: Southwark, SWK
- GBSWT: Swinton, SCB
- GBSWU: South Warnborough, HAM
- GBSWV: Sutton Weaver, STN
- GBSWW: Sawbridgeworth, HRT
- GBSWX: Stewarton, EAY
- GBSWY: Scalloway, ZET
- GBSXB: Saxilby, LIN
- GBSXD: Saintfield, DOW
- GBSXE: Staxigoe, HLD
- GBSXM: Saxmundham, SFK
- GBSXN: Steventon, HAM
- GBSXX: Seal, KEN
- GBSXY: Shipley, WSX
- GBSYA: Stoney Stanton, LEC
- GBSYB: Sowerby Bridge, YOR
- GBSYC: Sayers Common, WSX
- GBSYD: Stoneywood, ABE
- GBSYE: Staunton on Wye, HRT
- GBSYG: Steyning, WSX
- GBSYH: Scrayingham, NYK
- GBSYI: Sidley, ESX
- GBSYK: Suckley, WOR
- GBSYL: Shinness, HLD
- GBSYM: Symbister, ZET
- GBSYN: Shoeburyness, ESS
- GBSYO: Stony Middleton, DBY
- GBSYQ: Saint Mary Cray, BRY
- GBSYR: Stourton/Leeds, LDS
- GBSYS: Syston, LEC
- GBSYT: Swaythling, STH
- GBSYW: Sywell, NTH
- GBSYX: Symington, SAY
- GBSYY: Steynton, PEM
- GBSZB: Sizewell Beach, SFK
- GBSZC: Saint Clement, CON
- GBSZM: Soham, CAM
- GBSZT: Snizort, HLD
- GBT6V: Wales, ROT
- GBTAA: Talsarnau, GWN
- GBTAB: Tarbert, ELS
- GBTAD: Taddiport, DEV
- GBTAF: Stamford, LIN
- GBTAH: Strensham, WOR
- GBTAI: Tayinloan, AGB
- GBTAL: Theale, WBK
- GBTAM: Tameside, TAM
- GBTAN: Tal-y-llyn, GWN
- GBTAR: Tarbert, AGB
- GBTAS: Tavistock
- GBTAT: Stathe, SOM
- GBTAU: Taunton, SOM
- GBTAV: Taverham, NFK
- GBTAW: Tamworth, STS
- GBTAY: Tayport, FIF
- GBTBA: Tebay, CMA
- GBTBB: Thornbury, SGC
- GBTBE: Tobermore
- GBTBG: Trowbridge, WIL
- GBTBH: Thornborough, BKM
- GBTBL: Saint Albans, HRT
- GBTBN: Toberonochy, AGB
- GBTBR: Saint Brelade
- GBTBS: Tibshelf, DBY
- GBTBU: Turnberry, SAY
- GBTBY: Torbay/Paignton, TOB
- GBTCF: Thurcroft, ROT
- GBTCH: Ticehurst, ESX
- GBTCK: Ibstock, LEC
- GBTCS: Cossall, NTT
- GBTDA: Thornton le Dale, NYK
- GBTDB: Todber, DOR
- GBTDD: Teddington, RIC
- GBTDG: Tandragee, ARM
- GBTDI: Tudweiliog
- GBTDM: Todmorden, CLD
- GBTDN: Toddington, BDF
- GBTDR: Tredegar, BGW
- GBTDS: Tadcaster, NYK
- GBTDT: Thames Ditton, SRY
- GBTDW: Tadworth, SRY
- GBTDY: Tadley, HAM
- GBTEB: Tewkesbury, GLS
- GBTED: Stanstead, SFK
- GBTEE: Teesport, RCC
- GBTEF: Telford, SHR
- GBTEI: Trefriw, CWY
- GBTEM: Temple Sowerby
- GBTEN: Tenby (Dinbych-y-pysgod), PEM
- GBTER: Treharris, MTY
- GBTET: Tetbury, GLS
- GBTEZ: Talbot Green, RCT
- GBTFD: Thetford, NFK
- GBTFF: Trottiscliffe, KEN
- GBTFK: Trafford Park, MAN
- GBTFO: Tilford, SRY
- GBTFR: Trefforest, RCT
- GBTFS: Treforest, RCT
- GBTFT: Toft, ZET
- GBTFW: Taff's Well, CRF
- GBTFX: Turnford, HRT
- GBTGE: Tingewick, BKM
- GBTGH: Tongham, SRY
- GBTGM: Tangmere, WSX
- GBTGN: Thorrington, ESS
- GBTGR: Trimdon Grange, DUR
- GBTGU: Tongue, HLD
- GBTH7: Thornton Curtis, NLN
- GBTHA: Thatcham, WBK
- GBTHB: Thornbridge, DBY
- GBTHC: Three Legged Cross, DOR
- GBTHE: Thame, OXF
- GBTHF: Thistle Field
- GBTHH: Thornton Heath, CRY
- GBTHK: Thurston, SFK
- GBTHL: Tilton on the Hill, LEC
- GBTHM: Topsham
- GBTHN: Thornton, LAN
- GBTHO: Thormanby, NYK
- GBTHP: Thamesport, KEN
- GBTHR: Thurso, HLD
- GBTHS: Thames Haven, ESS
- GBTHT: South Uist and Eriskay, ELS
- GBTHY: Thorney, PTE
- GBTIA: Tintagel, CON
- GBTIC: Tickhill, DNC
- GBTID: Titchfield, HAM
- GBTIG: Tighnabruaich, AGB
- GBTIH: Tile Hill, WAR
- GBTIL: Tilbury, ESS
- GBTIM: Timsbury, BAS
- GBTIN: Tain, HLD
- GBTIP: Tiptree, ESS
- GBTIR: Tirphil, CAY
- GBTIT: Tillicoultry, CLK
- GBTKG: Throcking, HRT
- GBTKL: Tankersley, BNS
- GBTKM: Tickenham, NSM
- GBTKN: Throckmorton, WOR
- GBTKR: Stoke Row, OXF
- GBTKV: Kilmore, HLD
- GBTKW: Tockwith, NYK
- GBTKY: Takeley, ESS
- GBTLB: Tullibody, CLK
- GBTLC: Trillick
- GBTLD: Shetland, ZET
- GBTLE: Saint Helens, IOW
- GBTLF: Topcliffe, NYK
- GBTLG: Tylers Green, BKM
- GBTLH: Thurleigh, BDF
- GBTLI: Tayvallich
- GBTLM: Tillingham, ESS
- GBTLN: Talmine, HLD
- GBTLQ: Totton, HAM
- GBTLS: Thurlstone, YOR
- GBTLT: Tarleton, LAN
- GBTLW: Taplow, BKM
- GBTLY: Trimley Heath, SFK
- GBTML: Cartmel, CMA
- GBTMP: Timperley, TRF
- GBTMR: Stanwell Moor, SRY
- GBTMS: Thurmaston, LEC
- GBTMT: Trimley St. Martin, SFK
- GBTNB: Tonbridge, KEN
- GBTND: Standlake, OXF
- GBTNG: Tingwall, ORK
- GBTNL: Tunstall, STS
- GBTNM: Teignmouth
- GBTNN: Hilton, CAM
- GBTNO: Tong, SHR
- GBTNT: Tranent, ELN
- GBTNW: Stanway, ESS
- GBTNY: Stanley, ERY
- GBTOA: Tomatin, HLD
- GBTOB: Tobermory, AGB
- GBTOD: Totland, IOW
- GBTOE: Thorne, DNC
- GBTOF: Toft, LIN
- GBTOG: Tong, BRD
- GBTOI: Triton
- GBTOK: Stoke, DEV
- GBTOL: Tollesbury, ESS
- GBTOM: Tolleshunt D'Arcy, ESS
- GBTON: Livingston, WLN
- GBTOO: Toomebridge, ANT
- GBTOR: Torquay
- GBTOT: Thornaby on Tees, STT
- GBTOW: Towcester, NTH
- GBTOY: West Horsley, SRY
- GBTPB: Thorpe Bay, ESS
- GBTPC: Templecombe, SOM
- GBTPD: Threapwood, WRX
- GBTPH: Torphichen, WLN
- GBTPI: Torphins, ABD
- GBTPL: Tarporley, CHW
- GBTPN: Tipton, DUD
- GBTPO: Torpoint, CON
- GBTPP: Thrupp, GLS
- GBTPS: Thrapston, NTH
- GBTPT: Tupton, DBY
- GBTPY: Tonypandy, RCT
- GBTRA: Tranmere, WRL
- GBTRB: Thurlby
- GBTRC: Trescott, STS
- GBTRD: Torridon, HLD
- GBTRE: Tiree
- GBTRF: Turriff, ABD
- GBTRG: Tregaron, CGN
- GBTRH: Treherbert, RCT
- GBTRI: Tring, HRT
- GBTRK: Thurrock, ESS
- GBTRL: Thornhill, DBY
- GBTRM: Thornham, NFK
- GBTRN: Troon, SAY
- GBTRO: Trefor
- GBTRP: Thorpe, SRY
- GBTRR: Trearddur, AGY
- GBTRS: South Harris, ELS
- GBTRT: Thornton, ERY
- GBTRU: Truro, CON
- GBTRV: Tarvin, CHW
- GBTRW: Trelawnyd, FLN
- GBTRY: Treorchy, RCT
- GBTRZ: Treviscoe, CON
- GBTSA: Thorpe Saint Andrew, NFK
- GBTSE: Tunstead, NFK
- GBTSI: Tutshill, GLS
- GBTSK: Thirsk, NYK
- GBTSL: Tideswell, DBY
- GBTSM: Tivetshall Saint Margaret, NFK
- GBTSO: Tresco, CON
- GBTSR: Westminster, LND
- GBTST: Tharston, NFK
- GBTSW: Tilsworth, BDF
- GBTSY: Tisbury, WIL
- GBTTD: Tenterden, KEN
- GBTTF: Tatsfield, SRY
- GBTTH: Tattenhall, CHW
- GBTTK: Tostock, SFK
- GBTTL: Tetney Terminal, LIN
- GBTTM: Trentham, STE
- GBTTN: Witton, BIR
- GBTTO: Tillington, HEF
- GBTTR: Totteridge, BNE
- GBTTS: Totnes
- GBTTT: Tottenham, HRY
- GBTTW: Tetsworth, OXF
- GBTUB: Tunbridge Well, KEN
- GBTUF: Cuffley, HRT
- GBTUL: Tulliemet, PKN
- GBTUO: Tufton, PEM
- GBTUT: Tutbury, STS
- GBTUV: Turvey, MIK
- GBTUW: Tunbridge Wells, KEN
- GBTUX: Tuxford, NTT
- GBTVD: Tividale, DUD
- GBTVH: Teversham, CAM
- GBTVL: Tovil, KEN
- GBTVN: Tiverton
- GBTVS: Trevellas, CON
- GBTVT: Stretton, LEC
- GBTVY: Team Valley/Gateshead, GAT
- GBTWC: Twickenham, RIC
- GBTWD: Trawden, LAN
- GBTWF: Twyford, WOK
- GBTWL: Tingwall, ZET
- GBTWM: Thornwood Common, HRT
- GBTWN: Bettws Newydd, MON
- GBTWO: Tawstock, DEV
- GBTWR: Clows Top, WOR
- GBTWT: Tolworth, KTT
- GBTWW: Tow Law, DUR
- GBTWY: Twyford, BKM
- GBTXD: Thaxted, ESS
- GBTYB: Tal-y-bont, CGN
- GBTYC: Tycroes, CMN
- GBTYD: Tyddewi (St David's), PEM
- GBTYF: Twyford, HAM
- GBTYH: Teynham, KEN
- GBTYL: Tyldesley, WGN
- GBTYM: Tynemouth, NTY
- GBTYN: Tyne, NET
- GBTYU: Taynuilt, AGB
- GBTYW: Tenbury Wells, WOR
- GBTYY: Tyseley, BIR
- GBUBA: Distington, CMA
- GBUCK: Uckfield, ESX
- GBUCN: Buchan
- GBUDD: Uddingston, SLK
- GBUEM: Upper Edmonton, ENF
- GBUEN: Saint Ouen
- GBUFC: Uffculme, DEV
- GBUFD: Burford, OXF
- GBUFG: Uffington, OXF
- GBUFY: Upper Froyle, HAM
- GBUGH: Billingborough, LIN
- GBUGT: Broughton, HAM
- GBUHA: Uphall, WLN
- GBUHD: Upper Hartfield, ESX
- GBUHF: Upper Heyford, OXF
- GBUHL: Upper Holloway, ISL
- GBUHS: Burwash, ESX
- GBUIG: Uig, HLD
- GBUKO: Bulkington, WAR
- GBULF: Ulva Ferry, AGB
- GBULL: Ullapool, HLD
- GBULN: Urlay Nook, STT
- GBULO: Culloden, HLD
- GBULS: Ulsta, Yell, ZET
- GBULV: Ulverston, CMA
- GBULY: Ulceby, NLN
- GBUMB: Umberleigh, DEV
- GBUMR: Baumber, LIN
- GBUND: Lund, ERY
- GBUNH: Blunham, CBF
- GBUNS: Bunessan, AGB
- GBUNT: Unst, ZET
- GBUNY: Bunbury, CHE
- GBUOT: Upton, DOR
- GBUP3: Upham, HAM
- GBUPA: Upper Tean, STS
- GBUPD: Upper Dicker, ESX
- GBUPH: Upholland, LAN
- GBUPI: Uppingham, RUT
- GBUPL: Upper Poppleton, YOR
- GBUPM: Upminster, HAV
- GBUPN: Upton, CAM
- GBUPO: Upton, WKF
- GBUPP: Upper Dean, BDF
- GBUPR: Upnor, KEN
- GBUPS: Upshire, ESS
- GBUPT: Upton, SLG
- GBUPV: Upavon, WIL
- GBUPW: Upwood, CAM
- GBURD: Builth Road, POW
- GBURG: Upper Rissington, GLS
- GBURL: Lurgan, ARM
- GBURO: Burneston, NYK
- GBURS: Urmston, TRF
- GBURT: Sturton by Stow, LIN
- GBURY: Hurley, WAR
- GBUSD: Burnside, ANS
- GBUSK: Usk, MON
- GBUTC: Sutcombe, DEV
- GBUTH: Southam, GLS
- GBUTM: Upton, WRL
- GBUTN: Upton, LIN
- GBUTO: Burston, NFK
- GBUTS: South Strome
- GBUTT: Butterleigh, DEV
- GBUTX: Uttoxeter, STS
- GBUUP: Dunmow, ESS
- GBUUR: Hurn, DOR
- GBUUS: Upton upon Severn, WOR
- GBUWH: Curdworth, WAR
- GBUXB: Uxbridge, HIL
- GBUYE: Uyeasound, Unst, ZET
- GBVAL: Vale of Leven, WDU
- GBVBC: Snaith, ERY
- GBVCL: Castle Vale, BIR
- GBVDM: Long Sutton, SOM
- GBVEL: Velindre, PEM
- GBVEM: Fivemiletown, DGN
- GBVEN: Ventnor, IOW
- GBVER: Verwood, DOR
- GBVET: Kiveton, ROT
- GBVGI: Varg field
- GBVGN: Virginia Water, SRY
- GBVID: Vidlin, ZET
- GBVJL: Longmanhill, ABD
- GBVLY: Anglesey, AGY
- GBVMA: Craven Arms, SHR
- GBVOB: Vobster, SOM
- GBVOE: Voe, ZET
- GBVST: Silverstone, NTT
- GBVTJ: Nuthempstead
- GBVTN: Calverton, MIK
- GBVTO: Steventon, OXF
- GBVVE: Belgrave, LCE
- GBW5C: West Clandon, SRY
- GBW5F: Wansford, CAM
- GBWAA: Watlington, NFK
- GBWAB: Wadebridge, CON
- GBWAC: Waltham Cross, HRT
- GBWAD: Audlem, CHE
- GBWAE: Weare, SOM
- GBWAF: Watford, HRT
- GBWAH: West Hoathly, WSX
- GBWAI: Watchfield, OXF
- GBWAK: Wakes Colne, ESS
- GBWAL: Walsall, WLL
- GBWAM: Warminster, WIL
- GBWAN: Wandsworth, WND
- GBWAO: Wallington, STN
- GBWAR: Ware, HRT
- GBWAS: White Ladies Aston, WOR
- GBWAT: Watchet, SOM
- GBWAU: Walkerburn, SCB
- GBWAV: Watford Village
- GBWAW: Warwick, CMA
- GBWAX: West Auckland, DUR
- GBWAY: Wallasey, WRL
- GBWB7: West Brompton, HMF
- GBWBC: Wombourne, STS
- GBWBD: Wimbledon, MRT
- GBWBE: Waterbeach, CAM
- GBWBF: West Burrafirth, ZET
- GBWBG: Woodbridge, SFK
- GBWBH: Wimbish, ESS
- GBWBK: West Butterwick, NLN
- GBWBL: Wimblington, CAM
- GBWBN: Woburn, BDF
- GBWBO: Walberton, WSX
- GBWBR: Weybridge, SRY
- GBWBS: Wilberfoss, ERY
- GBWBT: West Byfleet, SRY
- GBWBU: Whitburn, WLN
- GBWBW: Wombwell, BNS
- GBWBY: Wembley, BEN
- GBWC5: West Calder, WLN
- GBWC8: Whitechapel, TWH
- GBWCA: Winchelsea, ESX
- GBWCB: Whitcombe, DOR
- GBWCC: Whitchurch, CRF
- GBWCE: Whatcote, WAR
- GBWCF: Witchford, CAM
- GBWCH: Wincham, CHW
- GBWCI: City of Westminster, LBH
- GBWCK: Wick, SGC
- GBWCM: Wiveliscombe, SOM
- GBWCO: Westcott, SRY
- GBWCT: Wincanton, SOM
- GBWCU: Whitchurch, SOM
- GBWCW: West Challow, OXF
- GBWD9: West Dean, WSX
- GBWDA: Woodhall, NYK
- GBWDD: Waddington, LAN
- GBWDE: Woodley, WBK
- GBWDF: Widford, ESS
- GBWDG: White Bridge, HLD
- GBWDH: Woodhall Spa, LIN
- GBWDL: Windlesham, SRY
- GBWDM: Windermere, CMA
- GBWDN: Widnes, HAL
- GBWDO: Wendover, BKM
- GBWDQ: Waldron, ESX
- GBWDR: West Drayton, HIL
- GBWDS: Woodstock, OXF
- GBWDU: Wadhurst, ESS
- GBWDV: Woodseaves, STS
- GBWDW: Woodnewton, NTH
- GBWEA: Wealdstone, BEN
- GBWEB: West Bromwich, SAW
- GBWED: Wednesbury, SAW
- GBWEE: Weedon, BKM
- GBWEF: Wednesfield, WLV
- GBWEG: Welling, BEX
- GBWEH: Winchmore Hill, BKM
- GBWEI: Whiteley, HAM
- GBWEK: Winterbourne Kingston, DOR
- GBWEL: Wellingborough, NTH
- GBWEM: Welham Green, HRT
- GBWEN: West End, HAM
- GBWEO: Wedmore, SOM
- GBWEQ: Westcott
- GBWER: Westerham, KEN
- GBWES: Weston, HRT
- GBWET: Wetherby, LDS
- GBWEV: Weaverthorpe, NYK
- GBWEW: Wentworth, SRY
- GBWEX: Withernsea, ERY
- GBWEY: Weymouth, DOR
- GBWF2: Watford, NTH
- GBWFB: Wainfleet Bank, LIN
- GBWFD: Wakefield, WKF
- GBWFE: Whitfield, KEN
- GBWFH: Cwmfelinfach
- GBWFI: Westfield
- GBWFL: Warfield, BRC
- GBWFO: Westcliffe on Sea, ESS
- GBWFR: Willford, NTT
- GBWFT: Waterfoot, MYL
- GBWFV: Weston Favell, NTH
- GBWG9: Winnington, CHW
- GBWGC: Welwyn Garden City, HRT
- GBWGD: West Grinstead, WSX
- GBWGE: Wantage, OXF
- GBWGF: West Bridgford, NTT
- GBWGG: Whitrigg, CMA
- GBWGH: Wingham, KEN
- GBWGI: Wimborne Saint Giles, DOR
- GBWGL: Wrea Green, LAN
- GBWGN: Wigan, WGN
- GBWGO: Little Weighton, ERY
- GBWGR: Bangor-is-y-coed, WRX
- GBWGS: Wigston, LEC
- GBWGT: Wigton, CMA
- GBWGV: Wargrave, WOK
- GBWGW: Walsgrave on Sowe, COV
- GBWH9: Wharton, CHW
- GBWHA: Whatton, NTT
- GBWHB: Whitebooth Roads
- GBWHC: Whitchurch, SHR
- GBWHD: Wear Head, DUR
- GBWHE: Whitehead, CKF
- GBWHF: Wethersfield, ESS
- GBWHG: Washington, WSX
- GBWHH: Isle of Whithorn, DGY
- GBWHI: Whitland, CMN
- GBWHJ: Whiteinch/Glasgow, GLG
- GBWHL: Whitehall Village, Stronsay, ORK
- GBWHM: Wetherden, SFK
- GBWHN: West Hanney, OXF
- GBWHO: West Horndon, ESS
- GBWHP: Wheathampstead, HRT
- GBWHR: Wrotham Heath, KEN
- GBWHS: Walthamstow, WFT
- GBWHT: Whitton, NBL
- GBWHU: Woodhurst, CAM
- GBWHV: Whitehaven, CMA
- GBWHW: Wishaw, NLK
- GBWHX: Whissonsett
- GBWHY: Whalsay
- GBWIA: Wingate, DUR
- GBWIB: Winchcombe, GLS
- GBWIC: Wick, HLD
- GBWID: Wickford, ESS
- GBWIE: Wiltshire, WIL
- GBWIF: Winsford, CHW
- GBWIG: Wigtown, DGY
- GBWIH: Witham, ESS
- GBWII: Willen, BKM
- GBWIL: Willand
- GBWIM: Wimborne Minster, DOR
- GBWIN: Witney, OXF
- GBWIO: Whiston, KWL
- GBWIR: Wirksworth, DBY
- GBWIS: Wisbech, CAM
- GBWIT: Williton, SOM
- GBWIV: Wivenhoe, ESS
- GBWIW: Winwick, WRT
- GBWIX: Wix, ESS
- GBWIY: Willersey, WOR
- GBWIZ: Wilton, RCC
- GBWJH: Blewbury, OXF
- GBWJV: Walgrave, NTH
- GBWKA: Walkhampton, DEV
- GBWKB: West Kilbride, NAY
- GBWKD: Walkden, SLF
- GBWKE: Wyke, BRD
- GBWKF: Winkfield, BRC
- GBWKG: Woking, SRY
- GBWKH: Wickhamford, HEF
- GBWKI: West Kirby, WRL
- GBWKL: Winkleigh
- GBWKM: Wickham, HAM
- GBWKN: Walkern, HRT
- GBWKO: Warkworth, NBL
- GBWKS: West Kingsdown, KEN
- GBWKT: Walkington, ERY
- GBWL2: Willingham, CAM
- GBWLA: Wallasea, ESS
- GBWLB: Welbury, NYK
- GBWLC: Waltham Chase, HAM
- GBWLD: Welford, NTH
- GBWLE: Walton-on-Thames, SRY
- GBWLF: Wallingford, OXF
- GBWLG: Whaligoe, HLD
- GBWLH: Dawlish, DEV
- GBWLI: West Linton, SCB
- GBWLK: Walker, NET
- GBWLL: Willenhall, WLL
- GBWLM: Woolacombe, DEV
- GBWLN: Welwyn, HRT
- GBWLO: Walton, DBY
- GBWLP: Woolpit, SFK
- GBWLR: Wooler, NBL
- GBWLS: Wells, SOM
- GBWLT: Wilton, WIL
- GBWLU: Welbourn, LIN
- GBWLV: Waterlooville, HAM
- GBWLW: Woolwich, BEX
- GBWLY: Warley
- GBWLZ: Walls, ZET
- GBWMB: Wemyss Bay, IVC
- GBWMD: West Mainland, ZET
- GBWME: Wormley, SRY
- GBWMF: Walmer, KEN
- GBWMG: Woolmer Green, HRT
- GBWMH: Worminghall, BKM
- GBWMI: Whitminster, GLS
- GBWMK: Wickham Market, SFK
- GBWML: West Malling, KEN
- GBWMN: West Meon, HAM
- GBWMO: West Molesey, SRY
- GBWMR: West Moors, DOR
- GBWMS: West Mersea, ESS
- GBWMT: Wilmington, ESX
- GBWMV: Worth Matravers, DOR
- GBWMW: Wymeswold, LEC
- GBWMY: Warmley, SGC
- GBWNB: Wootton Bassett, WIL
- GBWNC: Wilnecote, STS
- GBWND: Warndon, WOR
- GBWNE: Winchester, HAM
- GBWNF: Winchfield, HAM
- GBWNG: Wellington, TFW
- GBWNH: Warlingham, SRY
- GBWNI: Winnersh, WOK
- GBWNK: Wincobank, SHF
- GBWNL: Whinnyfold, ABD
- GBWNN: Washington, SND
- GBWNO: Winscombe, NSM
- GBWNR: Wem, SHR
- GBWNS: Wells-next-the-Sea, NFK
- GBWNT: Wellington, SOM
- GBWNW: Winfrith Newburgh, DOR
- GBWNY: Woodmansey, ERY
- GBWNZ: Walton-on-the-Naze, ESS
- GBWO9: Wootton, NLN
- GBWOA: Welford on Avon, WAR
- GBWOB: Suttonheath
- GBWOC: Woodchester, GLS
- GBWOD: Woldingham, SRY
- GBWOE: Worle, NSM
- GBWOF: Woodford, NTH
- GBWOG: Wood Green, HRY
- GBWOH: Woodford Halse, NTH
- GBWOI: Worthing, NFK
- GBWOK: Wokingham, WOK
- GBWOL: North Woolwich, NWM
- GBWON: Witton, NFK
- GBWOO: Worlington, SFK
- GBWOR: Workington, CMA
- GBWOS: Woburn Sands, BKM
- GBWOT: Worthing, WSX
- GBWOV: Wolverhampton, WLV
- GBWOW: Wallisdown, BMH
- GBWOX: Wardington, OXF
- GBWOY: Woodbury
- GBWOZ: Wollaston, NTH
- GBWPH: Whiteparish, WIL
- GBWPK: Worcester Park, KTT
- GBWPL: Whimple
- GBWPN: White Hill Point, NET
- GBWPS: Welshpool, POW
- GBWPT: Warrenpoint, DOW
- GBWQG: Withington, LAN
- GBWQK: Wark, NBL
- GBWQL: Wellington, HEF
- GBWQT: Welton, CMA
- GBWRA: Warnham, WSX
- GBWRB: West Loch Tarbert
- GBWRD: Woodford Green, RDB
- GBWRE: Wardle, RCH
- GBWRF: Waterford, HEF
- GBWRG: Werrington, CAM
- GBWRH: Wareham, DOR
- GBWRI: Wirral
- GBWRK: Worksop, NTT
- GBWRL: Warton, WAR
- GBWRN: Warrington, WRT
- GBWRO: Wrotham, KEN
- GBWRQ: Wark, NBL
- GBWRR: Wisborough Green, WSX
- GBWRS: Worsley, SLF
- GBWRT: Warton, LAN
- GBWRW: West Norwood, CRY
- GBWRY: Westray, ORK
- GBWSA: Woodbury Salterton, DEV
- GBWSB: Wraysbury, WNM
- GBWSD: Walsden, CLD
- GBWSE: Westgate on Sea, KEN
- GBWSF: West Stafford, DOR
- GBWSG: Willows Green, ESS
- GBWSH: Wittersham, KEN
- GBWSI: Westhill, ABD
- GBWSL: Winslow, BKM
- GBWSM: Weston-Super-Mare, NSM
- GBWSN: Weston, STS
- GBWSO: Whetstone, LEC
- GBWSP: Weston Point, HAL
- GBWSR: Windsor, WNM
- GBWSS: Warsash, HAM
- GBWST: Woolston, STH
- GBWSU: Wellesbourne, WAR
- GBWSW: Wilmslow, CHE
- GBWSX: Bolney, WSX
- GBWSY: Westbury, WIL
- GBWT3: Wheatley, OXF
- GBWT4: Waverton, CMA
- GBWT9: Wortley, BNS
- GBWTA: West Dereham, NFK
- GBWTB: Whitby, NYK
- GBWTC: Whitchurch, HAM
- GBWTD: Wanstead, RDB
- GBWTE: Westerleigh, GLS
- GBWTF: Whittlesford, CAM
- GBWTG: Westhoughton, BOL
- GBWTH: Withnell, LAN
- GBWTI: Westfield, ESX
- GBWTL: Whitley Bay, NTY
- GBWTM: West Hallam, DBY
- GBWTN: Waddington, LIN
- GBWTO: Water Orton, WAR
- GBWTP: West Hartlepool, HPL
- GBWTQ: Weston, NTH
- GBWTR: Worcester, WOR
- GBWTS: Whitstable, KEN
- GBWTT: Watton, NFK
- GBWTU: Winterbourne, SGC
- GBWTW: Wallsend, NTY
- GBWTX: Whittlesey, CAM
- GBWTY: Witley, SRY
- GBWUD: Wath upon Dearne, ROT
- GBWUE: Wotton-under-Edge, GLS
- GBWUF: Wolvey, HAM
- GBWUG: Wooburn Green, BKM
- GBWUH: Woodchurch, KEN
- GBWUN: West Runton, NFK
- GBWUR: Warburton, TRF
- GBWUT: Weston upon Trent, STS
- GBWUY: Wrenbury, CHE
- GBWVC: Wolvercote, OXF
- GBWVF: Wivelsfield Green, ESX
- GBWVL: Woodville, DBY
- GBWVS: Wolviston, STT
- GBWVT: Wolverton, BKM
- GBWVY: Wolvey, WAR
- GBWWA: Wirswall, CHE
- GBWWC: West Wickham, BRY
- GBWWD: Waunarlwydd, SWA
- GBWWE: West Wemyss, FIF
- GBWWG: West Wittering, WSX
- GBWWH: Walworth/London, SWK
- GBWWI: Whitwick, LEC
- GBWWK: Warwick, WAR
- GBWWL: Gowdall, YOR
- GBWWM: White Waltham, WNM
- GBWWN: Wattstown, RCT
- GBWWO: Wormington, GLS
- GBWWR: Wickwar, SGC
- GBWWS: Westwoodside, NLN
- GBWWT: Wormelow Tump, HEF
- GBWWU: Winterborne, DOR
- GBWWV: Whitworth, LAN
- GBWWW: Hutton Cranswick, ERY
- GBWWX: Whitwood, WKF
- GBWWY: Wembworthy, DEV
- GBWXA: Wraxall, SOM
- GBWXD: Howden, ERY
- GBWXF: Watlington, OXF
- GBWXH: Wrexham, WRX
- GBWXN: Willaston, CHW
- GBWXR: Worth, WSX
- GBWXT: West Midlands, BIR
- GBWXW: Westgate, DUR
- GBWXY: Tilehurst, WBK
- GBWYA: Wykeham, NYK
- GBWYB: Whaley Bridge, DBY
- GBWYC: Wychbold, WOR
- GBWYD: Wymondham, NFK
- GBWYE: Wye, KEN
- GBWYH: Wythenshawe, MAN
- GBWYK: Wyke Regis, DEV
- GBWYL: Whyteleafe, SRY
- GBWYM: Wylam, NBL
- GBWYO: Weybourne, NFK
- GBWYR: Wyre, ORK
- GBWYS: Westbury on Severn, GLS
- GBWYW: Westley Waterless, CAM
- GBWYX: West Bay
- GBWYY: Wybunbury, CHE
- GBWZD: Weald, KEN
- GBXAS: Saxby-All-Sts, LIN
- GBXBR: Barlaston, STS
- GBXBY: Denby Dale, KIR
- GBXCA: Claines, WOR
- GBXCD: Codsall, STS
- GBXCE: Crowle, NLN
- GBXCH: Chilham, KEN
- GBXCL: Cleator Moor, CMA
- GBXCM: Comber, ARD
- GBXCN: Crowland, LIN
- GBXCO: Colsterworth, LIN
- GBXCR: Crawley Down, WSX
- GBXCS: Crossmaglen, NYM
- GBXCU: Curridge, WBK
- GBXCW: Chwilog, GWN
- GBXCY: Caldy, WRL
- GBXDB: Chedburgh, SFK
- GBXDK: Dunkeld, PKN
- GBXDT: Ditton Priors, SHR
- GBXDY: Denaby, ROT
- GBXED: Ealand, NLN
- GBXET: Eaton Bray, CBF
- GBXFF: Defford, WOR
- GBXFH: Fishburn, DUR
- GBXFI: Fintona, OLD
- GBXFO: Foolow, DBY
- GBXFR: Fressingfield, SFK
- GBXGE: Gretton, GLS
- GBXGG: Gretna Green, DGY
- GBXGL: Great Longstone, DBY
- GBXGO: Grange over Sands
- GBXGR: Grampound, CON
- GBXGT: Gotham, NTT
- GBXGY: Grimley, WOR
- GBXHA: Bethesda, PEM
- GBXHD: Hednesford
- GBXHE: Hele, DEV
- GBXHI: Herriard, HAM
- GBXHN: Howden le Wear, DUR
- GBXHO: Horncastle, LIN
- GBXHR: Harrietsham, KEN
- GBXHW: Hay-on-Wye, POW
- GBXKI: Kilbirnie, NAY
- GBXKK: Kirkbymoorside, NYK
- GBXKL: Kilrea, CLR
- GBXKP: Kippings Cross, KEN
- GBXLG: Llangorse, POW
- GBXLN: Llandyrnog, DEN
- GBXLO: Longstanton, CAM
- GBXLS: Lasswade, MLN
- GBXLU: Loughgall, ARM
- GBXLW: Llanwern, NWP
- GBXLY: Kingsley, CHW
- GBXMA: Mackworth, DBY
- GBXME: Metheringham, LIN
- GBXMH: Henham, ESS
- GBXMI: Milfield, NBL
- GBXMN: Mangotsfield, LIN
- GBXMO: Moore Cheshire, HAL
- GBXMR: Moretonhampstead
- GBXMV: Milverton
- GBXNE: Nechells, BIR
- GBXNG: Nottage, BGE
- GBXNH: Netherfield, ESX
- GBXNN: Newtownhamilton, NYM
- GBXNT: Newtownbutler, FER
- GBXNU: Nutfield, SRY
- GBXNW: New Tredegar, CAY
- GBXOA: Oadby, LEC
- GBXOK: Oakamoor, STS
- GBXOV: Overseal, DBY
- GBXOX: Oxenhope, BRD
- GBXPA: Parkend, CMA
- GBXPB: Preston Brook, HAL
- GBXPE: Peters Green, HRT
- GBXPI: Pinxton, DBY
- GBXPP: Chipperfield, HEF
- GBXPT: Pitsea, ESS
- GBXPW: Powmill, PKN
- GBXSS: Seal Sands, DUR
- GBXST: Steeton, BRD
- GBXTL: Lanchester, DUR
- GBXXQ: Buildwas, SHR
- GBYAL: Yalding, KEN
- GBYAP: Yapton, WSX
- GBYAT: Yate, GLS
- GBYBF: Bere Ferrers, DEV
- GBYBG: Brynteg, AGY
- GBYBR: Kirby
- GBYBY: Bryncir, GWN
- GBYDB: Lydbury North, SHR
- GBYDE: Syde, GLS
- GBYDG: Yeading, HIL
- GBYDN: Yeadon, LDS
- GBYEB: Bourne End, BKM
- GBYEL: Hailey, OXF
- GBYEO: Yeovil, SOM
- GBYET: Chipping Ongar, ESS
- GBYEY: Byley, CHW
- GBYFR: Yell and Fetlar, ZET
- GBYGV: Youlgreave, DBY
- GBYHL: Lyonshall, HEF
- GBYKE: Yoker, GLG
- GBYKH: Southwick, SND
- GBYKJ: Blaina, BGW
- GBYLL: Yelland
- GBYLT: Yelverton, DEV
- GBYLW: Holywood, DOW
- GBYLY: Hartley, CMA
- GBYMA: Yeovil Marsh, SOM
- GBYMH: Ystrad Mynach, CAY
- GBYMO: Yarmouth, IOW
- GBYMS: Hay Mills, BIR
- GBYMT: Yetminster, DOR
- GBYMY: Brynmenyn, BGE
- GBYNT: Whitney, HEF
- GBYNY: Ynyswen, POW
- GBYOH: Haxby, YOR
- GBYON: Huntington, YOR
- GBYOS: Lydd on Sea, KEN
- GBYRD: Yardley, BIR
- GBYRK: York, NYK
- GBYRM: Yarm, STT
- GBYRO: Swynnerton, STS
- GBYSD: Ystradowen, VGL
- GBYSH: South Hylton, SND
- GBYST: Ystradgynlais, POW
- GBYTE: Yateley, HAM
- GBYTH: Blyth, NTT
- GBYTN: Yatton, NSM
- GBYUR: Church Stretton, SHR
- GBYVT: Yelvertoft, NTH
- GBYVZ: Stonehouse, GLS
- GBYXA: Yoxall, STS
- GBYXL: Coseley, WLV
- GBZAA: Augher
- GBZAB: Berkley, SOM
- GBZAC: Birchwood
- GBZAD: Boncath, PEM
- GBZAE: Bradfield, ESS
- GBZAF: Brimsdown, LND
- GBZAH: Bucksburn, ABE
- GBZAI: Bugle, CON
- GBZAJ: Caenby, LIN
- GBZAK: Canning Town, LND
- GBZAL: Cannington, SOM
- GBZAM: Carterton, OXF
- GBZAN: Chinnor, OXF
- GBZAO: Claughton, LAN
- GBZAP: Clayton, MAN
- GBZAQ: Coleshill, OXF
- GBZAR: Cookley, SFK
- GBZAS: Cranmore, SOM
- GBZAT: Crick, MON
- GBZAU: Crook, DUR
- GBZAV: Croy, HLD
- GBZAX: Culross, FIF
- GBZAY: Dalton, NYK
- GBZBA: Darnall, SHF
- GBZBB: Darsham, SFK
- GBZBC: Darvel, EAY
- GBZBD: Glespin
- GBZBE: Greetham, RUT
- GBZBF: Gullane, ELN
- GBZBG: Haddenham, BKM
- GBZBH: Hanwell, OXF
- GBZBI: Harrow Weald, HRW
- GBZBJ: Hatfield Peverel, ESS
- GBZBK: Hessay, YOR
- GBZBL: Hilton, SHR
- GBZBM: Horton, DOR
- GBZBN: Kempston, BDF
- GBZBO: Kencot, OXF
- GBZBP: Kentford, SFK
- GBZBQ: Kingston Blount, BKM
- GBZBR: Kirknewton, WLN
- GBZBT: Lauder, SCB
- GBZBU: Leadenham, LIN
- GBZBV: Leamington, WAR
- GBZBW: Leeds, KEN
- GBZBX: Lenwade, NFK
- GBZBY: Magherfelt
- GBZCA: Malvern Link, WOR
- GBZCB: Melsonby, NYK
- GBZCC: Moodiesburn, NLK
- GBZCE: Morden, DOR
- GBZCG: Mossend, NLK
- GBZCH: Moulton, NYK
- GBZCI: New Maldon, SRY
- GBZCJ: New Mills, DBY
- GBZCK: North Baddesley, HAM
- GBZCL: North Scarle, LIN
- GBZCM: Norton, KEN
- GBZCN: Norwood, CRY
- GBZCO: Partney, LIN
- GBZCP: Peterculter, ABD
- GBZCR: Prestbury, CHE
- GBZCS: Pucklechurch, SGC
- GBZCT: Roydon, ESS
- GBZCU: Royston, BNS
- GBZCV: Scotlandwell, FIF
- GBZCW: Selly Oak, BIR
- GBZCX: Sibsey, LIN
- GBZDA: Southsea, POR
- GBZDB: Stanningley, LDS
- GBZDC: Stone, KEN
- GBZDD: Chiddingfold, SRY
- GBZDE: Strathaven, SLK
- GBZDF: Thorganby, LIN
- GBZDG: Thorganby, NYK
- GBZDH: Tottington, NFK
- GBZDI: Whitwell, IOW
- GBZDJ: Willington, BDF
- GBZDK: Wilstead, BDF
- GBZDL: Winsford, SOM
- GBZDM: Wootton, NTH
- GBZDN: Wroxham, NFK
- GBZDO: Yarnton, OXF
- GBZDP: Yaxley, CAM
- GBZDQ: Milton Bridge
- GBZEF: Morningside, NLK
- GBZGH: Moulton, SFK
- GBZHG: Ahoghill, ANT
- GBZLD: Blairgowrie, PKN
- GBZLH: Zelah, CON
- GBZLS: Zeals, WIL
- GBZLY: Ballygrant, AGB
- GBZOR: Martock, SOM
- GBZOY: Westonzoyland, SOM
- GBZPB: Sparkbrook, BIR
- GBZPO: Polton, MLN
- GBZRC: Bracora, HLD
- GBZSB: Spean Bridge, HLD
- GBZSS: Bessbrook, NYM
- GBZST: Castlederg, STB
- GBZTH: Blair Atholl, PKN
- GBZTO: Brandesburton, ERY
- GBZTT: Bottesford, LEC
- GBZWN: Charlestown of Aberlour, MRY
- GBZWT: Brinsworth, ROT