| Code | Name | Region |
|---|---|---|
| GBWEQ | Westcott | |
| GBWCO | Westcott | SRY |
| GBWER | Westerham | KEN |
| GBWTE | Westerleigh | GLS |
| GBWFI | Westfield | |
| GBWTI | Westfield | ESX |
| GBWTA | West Dereham | NFK |
| GBWDR | West Drayton | HIL |
| GBWEN | West End | HAM |
| GBWGD | West Grinstead | WSX |
| GBWTM | West Hallam | DBY |
| GBWHN | West Hanney | OXF |
| GBARP | West Harptree | BAS |
| GBWTP | West Hartlepool | HPL |
| GBWAH | West Hoathly | WSX |
| GBWHO | West Horndon | ESS |
| GBTOY | West Horsley | SRY |
| GBWKB | West Kilbride | NAY |
| GBWKS | West Kingsdown | KEN |
| GBWKI | West Kirby | WRL |
| GBWLI | West Linton | SCB |
| GBWRB | West Loch Tarbert | |
| GBWS9 | West Lothian | WLN |
| GBWMD | West Mainland | ZET |
| GBWML | West Malling | KEN |
| GBWMN | West Meon | HAM |
| GBWBY | Wembley | BEN |
| GBWWY | Wembworthy | DEV |
| GBWMB | Wemyss Bay | IVC |
| GBWDO | Wendover | BKM |
| GBWEW | Wentworth | SRY |
| GBWRG | Werrington | CAM |
| GBWAX | West Auckland | DUR |
| GBWYX | West Bay | |
| GBEBD | West Boldon | STY |
| GBWGF | West Bridgford | NTT |
| GBWB7 | West Brompton | HMF |
| GBWEB | West Bromwich | SAW |
| GBWBF | West Burrafirth | ZET |
| GBWBK | West Butterwick | NLN |
| GBWBT | West Byfleet | SRY |
| GBWC5 | West Calder | WLN |
| GBWCW | West Challow | OXF |
| GBCWH | West Chiltington | WSX |
| GBW5C | West Clandon | SRY |
| GBWD9 | West Dean | WSX |
| GBWLU | Welbourn | LIN |
| GBWLB | Welbury | NYK |
| GBWLD | Welford | NTH |
| GBWOA | Welford On Avon | WAR |