| Western Life Limited | Ludlow | 1992 |
| Western Oaks Ltd | Richmond | 1996 |
| Western Power Distribution Nomineeco Limited | Worthing | 2020 |
| Western Promise Fishing Ltd | Buckie | 2017 |
| Western Ranching Company Ltd | London | 2018 |
| Western Tree Services (Commercial) Limited | Axminster | 2003 |
| Western Tree Surgeons Limited | Truro | 2004 |
| Westfena Limited | Wisbech | 2023 |
| Westfield A'I FAB Limited | Carmarthen | 2019 |
| Westfield Farm (Aberdeen) Limited | Aberdeen | 2011 |
| Westfield Farm Chew Magna Limited | Bristol | 2020 |
| Westfield Farms (Manea) Limited | Manea, March | 1977 |
| Westfield Farms Limited | Pickering | 2000 |
| Westfield Fishery Marlow Limited | Marlow | 2015 |
| Westfield House Farming Limited | Driffield | 2011 |
| Westgate Farm Limited | Sandy | 2018 |
| Westgate Tree Services Limited | Margate | 2004 |
| Westgrowers Limited | Louth | 2009 |
| Westhay Farm Ltd | Banwell | 2024 |
| Westhill Farming Limited | Winchester | 2010 |
| Westhorpe Farming Limited | Spalding | 1998 |
| Westhorpe Plants Limited | Boston | 2000 |
| Westhouse Retrievers Ltd | Skipton | 2025 |
| Westlain Ltd | Hailsham | 2023 |
| Westland Barton Limited | Bude | 1994 |
| Westland Nurseries (Offenham) Limited | Evesham | 1984 |
| Westland Woodland Ltd | Derby | 2026 |
| Westlands Soft Fruit Ltd | Southampton | 2026 |
| Westleaze Agrisales Limited | Beaminster | 2015 |
| Westline Tree & Grounds Services Ltd | Southampton | 2025 |
| Westlodge Kennels & Cattery Limited | Cambridge | 2010 |
| Westmill Woodland Burial Ground C.I.C. | Swindon | 2013 |
| Westmoor Botanicals Limited | Halifax | 2018 |
| Westmoor Produce Limited | Ely | 1972 |
| Westmore Poultry Ltd | Lincoln | 2011 |
| Westmoreland Farms Limited | Sleaford | 2022 |
| Westmorland Chapel Farm Limited | Penrith | 2018 |
| Westmorland Gundogs & Sporting Limited | Clitheroe | 2023 |
| Westmorland Tree Care Limited | Carnforth | 2003 |
| Westnedge Estate Limited | Horley | 1978 |
| Weston Brothers Limited | Whitchurch | 2026 |
| Weston Farming Limited | Newark | 2010 |
| Weston Hall Farms Limited | Leamington Spa | 1997 |
| Weston Hill Stud Limited | Derby | 2024 |
| Weston Lawn Fisheries Limited | Wolverhampton | 2014 |
| Weston Lawns Stud Limited | Bedworth | 2013 |
| Weston Manor Farm Limited | Chipping Norton | 2017 |
| Weston Mill Farming Company | Newark | 1984 |
| Weston Retirement Livery Ltd | Hitchin | 2024 |
| Weston Tree Limited | London | 2011 |
| Weston Warmbloods Limited | Romsey | 2014 |
| Westondale Limited | Shrewsbury | 2011 |
| Westons Farm Limited | Nottingham | 2020 |
| Westover Farm Contractors Limited | Newport | 2001 |
| Westpoint Enterprise Support Limited | Edinburgh | 2012 |
| Westrope Farming Limited | Bury St. Edmunds | 2004 |
| Westry Produce Limited | Leeds | 2014 |
| Wests Farm Produce Limited | Norwich | 2006 |
| Westshields Rottweilers Limited | Braehead | 2025 |
| Westside Forestry Limited | Belbroughton | 2003 |
| Westside Shellfish Limited | Swaffham | 2007 |
| Westview Fishing Co. Limited | By Montrose | 2007 |
| Westwater Angling Limited | Hexham | 1999 |
| Westways Carriage Horses Limited | Bedfordshire | 2014 |
| Westwell Farms Limited | Thame | 1973 |
| Westwick Fruit Farms Limited | Norfolk | 1936 |
| Westwinds Investments Limited | Peterhead | 2006 |
| Westwood Farm (Keevil) Limited | Trowbridge | 2008 |
| Westwood Farm (Scotland) Limited | Perth | 2008 |
| Westwood Farm Limited | Crediton | 2003 |
| Westwood Tree Services Ltd | St.Austell | 2016 |
| Westyfish Ltd. | Fraserburgh | 2006 |
| Wetherby Agricultural Services Ltd | Wetherby | 2023 |
| Wetland Restoration Contracting Limited | Wareham | 1999 |
| Wetmore Farm Limited | Craven Arms | 1961 |
| Wetnose Animal AID Ltd | Ditchingham | 1995 |
| Wetwood Farm Limited | Leek | 2016 |
| Wexfordian Fishing Limited | Shetland | 2025 |
| WEY Meadows Farm Limited | Addlestone | 1971 |
| WEY Valley Produce Limited | Guildford | 2009 |
| Weyborne Limited | Winchester | 2017 |
| Weybread Broiler Growers Limited | Great Yarmouth | 1977 |
| Weyfish Boat Company Limited | Weymouth | 2019 |
| Weyforward CIC | Weymouth | 2016 |
| Weyside Manor Stables Limited | Crawley | 2021 |
| Wezzywhipps Limited | Liverpool | 2021 |
| WFC Drayton Farming Limited | Winchester | 2001 |
| Wfec Ltd | Swaffham | 2023 |
| WFF Cefnamwlch Limited | Pentrefoelas | 2016 |
| WFH Francis & SON Dairy Ltd | Chippenham | 2012 |
| WFP Trading Limited | Plymouth | 2024 |
| WG & SJ Dell Limited | Leigh-On-Sea | 1999 |
| Wgbage Limited | Magherafelt | 2024 |
| WGC Dairy Tech Services Ltd | Motherwell | 2026 |
| WGJ Fishing Ltd | Scarborough | 2020 |
| WGL Farms (IW) Limited | Cowes | 2023 |
| WGW Limited | Bristol | 2018 |
| WH Beacom (Farming) Ltd | Tempo | 2015 |
| WH MCK Limited | Dungannon | 2011 |
| Whale Song Limited | Dudley | 2002 |