| Code | Name | Region |
|---|---|---|
| GBWRS | Worsley | SLF |
| GBT6D | Worstead | NFK |
| GBWXR | Worth | WSX |
| GBWMV | Worth Matravers | DOR |
| GBWOI | Worthing | NFK |
| GBWOT | Worthing | WSX |
| GBWT9 | Wortley | BNS |
| GBWUE | Wotton-under-edge | GLS |
| GBRBS | Wrabness | ESS |
| GBDEW | Wrafton | DEV |
| GBWXA | Wraxall | SOM |
| GBWSB | Wraysbury | WNM |
| GBWGL | Wrea Green | LAN |
| GBWUY | Wrenbury | CHE |
| GBRTA | Wretham | NFK |
| GBWXH | Wrexham | WRX |
| GBWDV | Woodseaves | STS |
| GBWDS | Woodstock | OXF |
| GBWVL | Woodville | DBY |
| GBWLM | Woolacombe | DEV |
| GBOSO | Woolaston | GLS |
| GBWLR | Wooler | NBL |
| GBWMG | Woolmer Green | HRT |
| GBWLP | Woolpit | SFK |
| GBWST | Woolston | STH |
| GBWOJ | Woolston | WRT |
| GBWLW | Woolwich | BEX |
| GBWO9 | Wootton | NLN |
| GBZDM | Wootton | NTH |
| GBWNB | Wootton Bassett | WIL |
| GBWTR | Worcester | WOR |
| GBWPK | Worcester Park | KTT |
| GBWOR | Workington | CMA |
| GBWRK | Worksop | NTT |
| GBWOE | Worle | NSM |
| GBWOO | Worlington | SFK |
| GBWVY | Wolvey | WAR |
| GBWVS | Wolviston | STT |
| GBWBC | Wombourne | STS |
| GBWBW | Wombwell | BNS |
| GBWUG | Wooburn Green | BKM |
| GBWOG | Wood Green | HRY |
| GBWBG | Woodbridge | SFK |
| GBWOY | Woodbury | |
| GBWSA | Woodbury Salterton | DEV |
| GBWOC | Woodchester | GLS |
| GBWUH | Woodchurch | KEN |
| GBWOF | Woodford | NTH |
| GBWRD | Woodford Green | RDB |
| GBWOH | Woodford Halse | NTH |