| Code | Name |
|---|---|
| LCWOR | Workington |
| SLWW | Worksop |
| SSWOR | Worle |
| EAWOR | Worlingworth |
| WNWOM | Wormbridge |
| WNWOR | Wormelow |
| THWY | Wormley |
| NDWOR | Wormshill |
| THWP | Worplesdon |
| STWRTHM | Worth Matravers |
| WNWTN | Worthen |
| SDWCNTR | Worthing Central |
| SDWSWND | Worthing Swandean |
| SDWWST | Worthing West |
| SSWUE | Wotton Under Edge |
| SLWG | Wragby |
| LWWRA | Wraysbury |
| EAWRE | Wrentham |
| SMWSW | Wrestlingworth |
| WNWX | Wrexham |
| WNWXN | Wrexham North |
| SSWRI | Wrington |
| EAWRI | Writtle |
| SSWGN | Wroughton |
| EAWRO | Wroxham |
| SMWX | Wroxton St Mary |
| WMWYB | Wybunbury |
| WMWYC | Wychbold |
| NDWYE | Wye |
| NEWYL | Wylam |
| SSWYL | Wylye |
| EMWYSWO | Wymeswold |
| EMWMNDH | Wymondham |
| EAWYM | Wymondham (Norfolk) |
| CMWYT | Wythall |
| MRWYT | Wythenshawe |
| SDYPTN | Yapton |
| SMYG | Yardley Gobion |
| EMYARDL | Yardley Hastings |
| SDYRMTH | Yarmouth (Iow) |
| WMYAR | Yarnfield |
| WNYA | Yarpole |
| ESYRF | Yarrowford |
| THY | Yateley |
| SSYAT | Yatton |
| EMYXLEY | Yaxley |
| WWYEAL | Yealmpton |
| WWYELV | Yelverton |
| WWYEOV | Yeovil |
| ESYET | Yetholm |
