- W Sussex - 2 companies
- W Yorkshire - 2 companies
- W. Sussex - 1 company
- Wadebridge - 9 companies
- Wadhurst - 13 companies
- Wakefield - 149 companies
- Wakefield Europort - 1 company
- Wakes Colne - 1 company
- Walberton - 1 company
- Walcote - 1 company
- Walcott - 1 company
- Walden - 1 company
- Wales - 9 companies
- Walkden - 1 company
- Wallasey - 20 companies
- Wallingford - 33 companies
- Wallington - 20 companies
- Wallridge - 1 company
- Wallsall - 1 company
- Wallsend - 24 companies
- Walsal - 1 company
- Walsall - 263 companies
- Walsall West Midlands - 1 company
- Waltham Abbey - 45 companies
- Waltham Abbey, United Kingdom - 1 company
- Waltham Cross - 29 companies
- Walton on Thames - 27 companies
- Walton on the Naze - 1 company
- Walton-on-Thames - 16 companies
- wandsworth - 5 companies
- Wanstead - 1 company
- Wantage - 25 companies
- Ware - 52 companies
- Wareham - 16 companies
- Warfield - 2 companies
- Warks - 3 companies
- Warley - 3 companies
- Warlingham - 9 companies
- Warminster - 29 companies
- Warmley - 2 companies
- Warndon - 1 company
- Warringstown - 1 company
- warrington - 316 companies
- Warrington Cheshire - 1 company
- Warsop - 1 company
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