Exchanges
| Code | Name |
|---|---|
| WWWKLH | Winkleigh |
| SSWIN | Winscombe |
| WWWFRD | Winsford |
| MRWIN | Winsford (Mr) |
| WWWSHM | Winsham |
| SMWW | Winslow |
| EMWINST | Winster |
| SSWIB | Winterbourne |
| STWINSL | Winterslow |
| SLWKT | Winterton |
| EAWIN | Winterton On Sea |
| STWINTN | Winton |
| EMWINWI | Winwick |
| EMWIRKS | Wirksworth |
| EMWSBCH | Wisbech |
| EMWISSM | Wisbech St.Mary |
| SDWSBRG | Wisborough Green |
| WSWIS | Wishaw |
| STWITCH | Witchampton |
| SSWCE | Witcombe |
| EAWTH | Witham |
| EMWIOTH | Witham On The Hill |
| SDWTHDN | Withdean |
| WWWITH | Witheridge |
| SLWIT | Withern |
| MYWIT | Withernsea |
| LCWSK | Witherslack |
| SSWTN | Withington |
| EAWTS | Witnesham |
| SMWI | Witney |
| NDWIT | Wittersham |
| NEWLW | Witton Le Wear |
| WWWIVE | Wiveliscombe |
| SDWVLSF | Wivelsfield Green |
| EAWIV | Wivenhoe |
| EAWIX | Wix |
| SMWB | Woburn |
| SMWS | Woburn Sands |
| THWK | Woking |
| THWM | Wokingham |
| LSWOL | Woldingham |
| EMWOLLA | Wollaton |
| CMWOL | Wolston |
| CMWV | Wolverhampton Centra |
| WMWLY | Wolverley |
| SMWV | Wolverton |
| SWVVW | Wolvesnewton |
| EMWLVEY | Wolvey |
| NEWV | Wolviston |
| CMWOM | Wombourne |