| Code | Name |
|---|---|
| WSWHB | Whiting Bay |
| SWWHT | Whitland |
| NEWB | Whitley Bay |
| MYWBG | Whitley Bridge |
| WMWTM | Whitmore |
| ESWHS | Whitsome |
| NDWHI | Whitstable |
| NEWGM | Whittingham |
| CMWHY | Whittington |
| EMWHITT | Whittlesey |
| EAWHI | Whitton |
| SLWHT | Whitwell |
| SMWTW | Whitwell |
| MYWOH | Whitwell On The Hill |
| LCWHW | Whitworth |
| WNWXL | Whixall |
| NEWOR | Whorlton |
| WMWIC | Wichenford |
| NSWIC | Wick |
| SLWKY | Wickenby |
| SLWKZ | Wickersley |
| EAWFD | Wickford |
| SDWCKHM | Wickham |
| EAWBS | Wickham Bishops |
| EAWMK | Wickham Market |
| EAWKB | Wickhambrook |
| SSWWR | Wickwar |
| WWWMOR | Widecombe In The Moor |
| WWWDGT | Widegates |
| WWWBAY | Widemouth Bay |
| NEWHP | Wideopen |
| LVWID | Widnes |
| LCWIG | Wigan |
| WNWIG | Wigmore |
| LCWGT | Wigton |
| WSWIG | Wigtown |
| MYWIL | Wilberfoss |
| WMWLN | Willaston |
| CMWIL | Willenhall |
| LWWIL | Willesden |
| EAWIL | Willingale |
| EAWLM | Willingham |
| NEWT | Willington |
| WWWILL | Williton |
| EMWILLO | Willowcroft |
| WWWILM | Wilmington |
| MRWIL | Wilmslow |
| LCWIL | Wilpshire |
| SMWLS | Wilstead |
| STWLTON | Wilton |
