| Aldermaston | AMT |
| Appleford | APF |
| Ascott-Under-Wychwood | AUW |
| Ashchurch | ASC |
| Avoncliff | AVF |
| Avonmouth | AVN |
| Barnstaple | BNP |
| Bath Spa | BTH |
| Bedminster | BMT |
| Bedwyn | BDW |
| Bere Alston | BAS |
| Bere Ferrers | BFE |
| Betchworth | BTO |
| Blackwater | BAW |
| Bodmin Parkway | BOD |
| Bourne End | BNE |
| Bradford-On-Avon | BOA |
| Bramley (Hampshire) | BMY |
| Bridgwater | BWT |
| Bristol Parkway | BPW |
| Bruton | BRU |
| Bugle | BGL |
| Calstock | CSK |
| Cam and Dursley | CDU |
| Camborne | CBN |
| Carbis Bay | CBB |
| Castle Bar Park | CBP |
| Castle Cary | CLC |
| Causeland | CAU |
| Chapelton | CPN |
| Charlbury | CBY |
| Cheltenham Spa | CNM |
| Chetnole | CNO |
| Chilworth | CHL |
| Chippenham | CPM |
| Cholsey | CHO |
| Clifton Down | CFN |
| Combe | CME |
| Cookham | COO |
| Coombe Junction Halt | COE |
| Copplestone | COP |
| Crediton | CDI |
| Crowthorne | CRN |
| Culham | CUM |
| Dawlish | DWL |
| Dawlish Warren | DWW |
| Dean | DEN |
| Deepdene | DPD |
| Devonport | DPT |
| Didcot Parkway | DID |
| Digby and Sowton | DIG |
| Dilton Marsh | DMH |
| Dockyard | DOC |
| Dorchester West | DCW |
| Dorking West | DKT |
| Drayton Green | DRG |
| Eggesford | EGG |
| Evesham | EVE |
| Exeter Central | EXC |
| Exeter St. David's | EXD |
| Exeter St. Thomas | EXT |
| Exmouth | EXM |
| Exton | EXN |
| Falmouth Docks | FAL |
| Falmouth Town | FMT |
| Farnborough North | FNN |
| Filton Abbey Wood | FIT |
| Finstock | FIN |
| Freshford | FFD |
| Frome | FRO |
| Furze Platt | FZP |
| Gloucester | GCR |
| Gomshall | GOM |
| Goring and Streatley | GOR |
| Gunnislake | GSL |
| Hanborough | HND |
| Hayle | HYL |
| Henley-On-Thames | HOT |
| Heyford | HYD |
| Highbridge and Burnham | HIG |
| Honeybourne | HYB |
| Hungerford | HGD |
| Ivybridge | IVY |
| Kemble | KEM |
| Keyham | KEY |
| Keynsham | KYN |
| King's Nympton | KGN |
| Kingham | KGM |
| Kintbury | KIT |
| Lapford | LAP |
| Lawrence Hill | LWH |
| Lelant | LEL |
| Lelant Saltings | LTS |
| Liskeard | LSK |
| Looe | LOO |
| Lostwithiel | LOS |
| Luxulyan | LUX |
| Lympstone Commando | LYC |
| Lympstone Village | LYM |
| Maiden Newton | MDN |
| Maidenhead | MAI |
| Marlow | MLW |
| Melksham | MKM |
| Menheniot | MEN |
| Midgham | MDG |
| Montpelier | MTP |
| Morchard Road | MRD |
| Moreton-In-Marsh | MIM |
| Mortimer | MOR |
| Mottisfont and Dunbridge | DBG |
| Nailsea and Backwell | NLS |
| Newbury | NBY |
| Newbury Racecourse | NRC |
| Newcourt | NCO |
| Newquay | NQY |
| Newton Abbot | NTA |
| Newton St.Cyres | NTC |
| North Camp | NCM |
| Okehampton | OKE |
| Oldfield Park | OLF |
| Oxford | OXF |
| Paignton | PGN |
| Pangbourne | PAN |
| Par | PAR |
| Parson Street | PSN |
| Patchway | PWY |
| Penmere | PNM |
| Penryn | PYN |
| Penzance | PNZ |
| Perranwell | PRW |
| Pershore | PSH |
| Pewsey | PEW |
| Pilning | PIL |
| Plymouth | PLY |
| Polsloe Bridge | POL |
| Portsmouth Arms | PMA |
| Quintrell Downs | QUI |
| Radley | RAD |
| Reading West | RDW |
| Redland | RDA |
| Redruth | RED |
| Roche | ROC |
| Romsey | ROM |
| Saltash | STS |
| Sampford Courtenay | SMC |
| Sandhurst | SND |
| Sandplace | SDP |
| Sea Mills | SML |
| Severn Beach | SVB |
| Shalford | SFR |
| Shiplake | SHI |
| Shipton | SIP |
| Shirehampton | SHH |
| Slough | SLO |
| South Greenford | SGN |
| St.Andrew's Road | SAR |
| St.Austell | SAU |
| St.Budeaux Ferry Road | SBF |
| St.Budeaux Victoria Road | SBV |
| St.Columb Road | SCR |
| St.Erth | SER |
| St.Germans | SGM |
| St.Ives | SIV |
| St.James' Park | SJP |
| St.Keyne Wishing Well Halt | SKN |
| Stapleton Road | SRD |
| Starcross | SCS |
| Stonehouse | SHU |
| Stroud | STD |
| Swindon | SWI |
| Tackley | TAC |
| Taunton | TAU |
| Teignmouth | TGM |
| Thatcham | THA |
| Theale | THE |
| Thornford | THO |
| Tilehurst | TLH |
| Tiverton Parkway | TVP |
| Topsham | TOP |
| Torquay | TQY |
| Torre | TRR |
| Totnes | TOT |
| Trowbridge | TRO |
| Truro | TRU |
| Twyford | TWY |
| Umberleigh | UMB |
| Wargrave | WGV |
| Warminster | WMN |
| Westbury | WSB |
| Weston Milton | WNM |
| Weston-Super-Mare | WSM |
| Windsor and Eton Central | WNC |
| Worle | WOR |
| Yate | YAE |
| Yatton | YAT |
| Yeoford | YEO |
| Yeovil Pen Mill | YVP |
| Yetminster | YET |
> 10,000,000 
> 1,000,000 
> 100,000 
> 10,000 
> 1,000 
< 1,000