| Wellingore Farms Limited | Lincoln | 1982 |
| Wellington Bistro (N.I.) Ltd | Larne | 2013 |
| Wellington Crag Native Breeds Limited | Lancaster | 2022 |
| Wellington Farm (Aspatria) | Wigton | 2009 |
| Wellington Farm Enterprises Limited | Bedford | 1995 |
| Wellington Farms Limited | 139 Fountainbridge | 1990 |
| Wellness in Wellies CIC | Pucklechurch | 2024 |
| Wellow (I.O.W.)Farmers Limited | Yarmouth | 1969 |
| Wellpark Farms Limited | Buckfastleigh | 2025 |
| Wells Contracting Limited | Barton Upon Humber | 2002 |
| Wells Farming Limited | Carlisle | 2018 |
| Wellscene Limited | London | 2026 |
| Wellspring Agriculture Ltd | Cardiff | 2022 |
| Wellwood Estates Limited | Fife | 2001 |
| Wellwood Farming Limited | Nantwich | 2013 |
| Welly to Belly CIC | Chester | 2024 |
| Welsh Black Wales Limited | Porth | 2009 |
| Welsh EGG (Porthcawl) Ltd | Cardiff Gate Business Park | 2013 |
| Welsh Fisherman's Association-Cymdeithas Pysgotwyr Cymru Limited | Aberystwyth | 2011 |
| Welsh Heritage Walnut Farm Ltd | Whitland | 2025 |
| Welsh Lavender Limited | Builth Wells | 2010 |
| Welsh Meadow CYF | Wrexham | 2020 |
| Welwyn Home Farm Enterprises Limited | Witham | 1990 |
| Welwyn Stud Limited | Folkestone | 2014 |
| WEM Lavender Ltd | Shrewsbury | 2022 |
| Wemmergill Moor Limited | London | 2003 |
| Wemyss Forestry Developments Limited | Argyll | 1997 |
| Wenallt Farm Limited | Newport | 2005 |
| Wendling Beck Market Garden C.I.C. | Dereham | 2019 |
| Wenham Profiles Limited | Loughton | 2010 |
| Wenlock Eggs Limited | Derby | 2020 |
| Wenlocks Farming Limited | Romford | 2018 |
| Wensleydale Tree and Horticultural Services Limited | Hawes | 2003 |
| Went to the Woods Ltd | London | 2025 |
| Wentwood Estates Limited | Newport | 2026 |
| Wentworth Equestrian Limited | Huddersfield | 2019 |
| Wentworth Farming Ltd | Penrith | 2021 |
| Wentworth Farrier Services Limited | Egham | 2023 |
| Wereham Gravel Company Limited(The) | London | 1909 |
| Wern Farm Ltd | London | 2018 |
| Wern Growth Services Ltd. | Brecon | 2003 |
| Wernbrake Woodland Limited | Bristol | 2007 |
| Wernbwll Ltd | Swansea | 2019 |
| Wernllath Farm Ltd | Swansea | 2024 |
| Wesbil Limited | Haverfordwest | 2003 |
| Wesellbloodstock.Com Limited | Malmesbury | 2020 |
| Wesley Nicholls Farrier Limited | Tewkesbury | 2012 |
| Wesnet Services Ltd | Waterlooville | 2001 |
| Wessex Agri Services Ltd | Sherborne | 2013 |
| Wessex Auto and Logistics Ltd | Newbury | 2013 |
| Wessex Biofuels Ltd | Hungerford | 2009 |
| Wessex Conservation Grazing Limited | Dorchester | 2015 |
| Wessex Cottages Ltd | Eastleigh | 2007 |
| Wessex Equestrian Ltd | Eastleigh | 2018 |
| Wessex Field and Game Ltd | Melksham | 2023 |
| Wessex Rural Crafts Limited | Wiltshire | 2006 |
| Wessex Tree Surgeons Limited | Barnstaple | 1996 |
| Wessex Trees Limited | Romsey | 2013 |
| Wessex Woodland Management Limited | Hungerford | 1993 |
| West Antony Farming Company | Exeter | 1996 |
| West Ashby Farms Limited | Horncastle | 2006 |
| West Bay Fishing Ltd | Ipswich | 2013 |
| West Bradley Farm Limited | Taunton | 2017 |
| West Brough Farm Limited | Orkney | 2023 |
| West Buckland Bloodstock Ltd | Wellington | 2014 |
| West Cannock Farm Limited | Cannock | 2024 |
| West Coast Apiaries Ltd | Talybont | 2022 |
| West Coast Fish Limited | Workington | 2012 |
| West Coast Mushrooms Ltd | Wotton-Under-Edge | 2025 |
| West Coast Seafoods Limited | Keith | 2025 |
| West Coast Seaweed Ltd | Edinburgh | 2021 |
| West Coast Shellfish (Scotland) Ltd | Inverurie | 2016 |
| West Cocking Horse Group Ltd | Bury St. Edmunds | 2020 |
| West Cocklake Farm Ltd | Alston | 2020 |
| West Contract Services Limited | Isle Of Skye | 2009 |
| West Country Calves Limited | Bridgwater | 1981 |
| West Country Catch Limited | Exeter | 2016 |
| West Country Eggs Limited | South Petherton | 1986 |
| West Country Forestry Limited | Bristol | 2008 |
| West Country Honey Ltd | Bristol | 2020 |
| West Country Kingdom Ltd | Tiverton | 2021 |
| West Country Mussels of Fowey Limited | Fowey | 2009 |
| West Country Pest Control Ltd | Yeovil | 2018 |
| West Country Soil Improvement Limited | London | 2017 |
| West Country Tree Farm Ltd | Enfield | 2020 |
| West Country Trees Farm Ltd. | Enfield | 2016 |
| West Country Trees Ltd. | Enfield | 2016 |
| West Country Trees Swordale Limited | Enfield | 2021 |
| West Country Water Buffalo Limited | Yeovil | 2014 |
| West Dron Farm Limited | Bury St. Edmunds | 2016 |
| West Dumbreck Farm Ltd | Glasgow | 2021 |
| West Durham BNG Limited | Durham | 2024 |
| West END Farm (Carperby) Ltd | Leyburn | 2017 |
| West END Farm Kennels Limited | Stowmarket | 2003 |
| West Farm Group Ltd | Huntingdon | 2025 |
| West Farms Limited | Crymych | 2004 |
| West Farnell Contracts Ltd | Brechin | 2022 |
| West Fishing Limited | Fraserburgh | 2017 |
| West Fossil Estate Limited | Weymouth | 1996 |
| West Foulden Farming Limited | Berwick Upon Tweed | 2023 |