| | PR Agency Name | Location |  |  |  |  |
 | W Nagal | .10 Ely Place, London.
| | | | |
 | W T Associates | .54 Old Street, Shoreditch, London
| | | | |
 | W.P.S Communication | .15 Cedar Grove, Stockport, Cheshire [Greater Manchester] [North West] [England] | | | | |
 | Walbrook PR | .4 Lombard Street
London
| |  | | |
 | Wales Screen Commission | .Unit 6g, Cefn Llan Science Park, Waunfawr, Aberystwyth, Dyfed [Ceredigion] [Mid and West Wales] [Wales] | | | | |
 | Walker Mitchell Ltd | .Brearley Hall, Luddendenfoot, Halifax, West Yorkshire [West Yorkshire] [North East] [England] | | | | |
 | Walker Williams | .110 St. Martins Lane, Strand, London
| |  | | |
 | Walnut Bureau | .High Bickington, Dadland, Umberleigh, Devon [Devon] [South West] [England] | |  | | |
 | Walters Phyllis | .27 Bruton Street, Mayfair, London
| | | | |
 | Walton Burdon Associates | .Pannau Cott, Rhandirmwyn, Llandovery, Llandovery [Carmarthenshire] [Mid and West Wales] [Wales] | | | | |
 | Want Media | .Victoria SquareKirkby Stephen,Cumbria
| | | | |
 | Wardour Communications Ltd | .41-42 Berners Street, Soho, London
| | | | |
 | Warman Group Ltd | .7 The Wharf 16 Bridge Street, Birmingham [West Midlands] [West Midlands] [England] | | | | |
 | Warrior Communications Ltd | .25 Tite Street, Kensington, London [Greater London] [South East] [England] | | | | |
 | Warwick Emanuel | .93 Cardiff Road,
Taffs Well,
Cardiff [South Glamorgan] [South Wales] [Wales] | |  |  | |
 | WAT PR | .59 Malvern Road, London [Greater London] [South East] [England] | |  | | |
 | Watch PR | .29 Gibbon Road
Kingston upon Thames [Greater London] [South East] [England] | |  | |  |
 | Waterfront Partnership | .130-132 Tooley Street, London [Greater London] [South East] [England] | | | | |
 | WatermanPR | .Porchester Square, London [Greater London] [South East] [England] | |  | |  |
 | Waters Sarah | .156-158 Grays Inn Road, Bloomsbury, London
| | | | |