| Code | Name | Region |
|---|---|---|
| GBWNF | Winchfield | HAM |
| GBWEH | Winchmore Hill | BKM |
| GBWNK | Wincobank | SHF |
| GBWDM | Windermere | CMA |
| GBWDL | Windlesham | SRY |
| GBWSR | Windsor | WNM |
| GBWNW | Winfrith Newburgh | DOR |
| GBWIA | Wingate | DUR |
| GBWGH | Wingham | KEN |
| GBWKF | Winkfield | BRC |
| GBWKL | Winkleigh | |
| GBWNI | Winnersh | WOK |
| GBWG9 | Winnington | CHW |
| GBWNO | Winscombe | NSM |
| GBWIF | Winsford | CHW |
| GBZDL | Winsford | SOM |
| GBWL2 | Willingham | CAM |
| GBZDJ | Willington | BDF |
| GBWIT | Williton | SOM |
| GBWSG | Willows Green | ESS |
| GBWMT | Wilmington | ESX |
| GBWSW | Wilmslow | CHE |
| GBWNC | Wilnecote | STS |
| GBLSD | Wilsden | BRD |
| GBZDK | Wilstead | BDF |
| GBKIY | Wilton | RCC |
| GBWIZ | Wilton | RCC |
| GBWLT | Wilton | WIL |
| GBWIE | Wiltshire | WIL |
| GBWBH | Wimbish | ESS |
| GBWBD | Wimbledon | MRT |
| GBWBL | Wimblington | CAM |
| GBWIM | Wimborne Minster | DOR |
| GBWGI | Wimborne Saint Giles | DOR |
| GBMBN | Wimeborne | DOR |
| GBWCT | Wincanton | SOM |
| GBWID | Wickford | ESS |
| GBWKM | Wickham | HAM |
| GBWMK | Wickham Market | SFK |
| GBWKH | Wickhamford | HEF |
| GBWWR | Wickwar | SGC |
| GBWDF | Widford | ESS |
| GBDSW | Widford | HRT |
| GBWDN | Widnes | HAL |
| GBWGN | Wigan | WGN |
| GBWGS | Wigston | LEC |
| GBWGT | Wigton | CMA |
| GBWIG | Wigtown | DGY |
| GBWBS | Wilberfoss | ERY |
| GBWIL | Willand |