| Willow Solutions Limited | Taunton | 2023 |
| Willow Tree Falcons Ltd | Havant | 2019 |
| Willow Tree Farm Grangehill Road Limited | London Colney | 2019 |
| Willow Tree Farms Limited | Long Sutton | 1995 |
| Willow Tree Lane Farm Limited | Hillsborough | 2019 |
| Willow Tree Livestock Ltd | Driffield | 2010 |
| Willow Trees Farm Ltd | Rushyford | 2020 |
| Willow Valley Farms Limited | Liversedge | 1973 |
| Willow View Lakes Limited | Suckley | 2025 |
| Willow Wood Farm, Wyck Hill Ltd | Stow On The Wold | 2023 |
| Willow Wood Gardening and Landscaping Ltd | Edenbridge | 2021 |
| Willow Wood Stud Limited | Tarporley | 2016 |
| Willow Woods Scotland Limited | Balerno | 2022 |
| Willowbach Limited | Chippenham | 2015 |
| Willowbank Farm Rare Breeds Rescue Ltd | Poole | 2023 |
| Willowbank Organic Producers Ltd | Dungannon | 2004 |
| Willowbridge Plants Limited | Lancaster | 2015 |
| Willowbrook Equine Limited | Kettering | 1999 |
| Willowbrook Farms | Newtownards | 2000 |
| Willowbrook Forestry & Landscapes Ltd | Melton Mowbray | 2018 |
| Willowbrook Ventures Limited | Hilperton | 2012 |
| Willowcroft Fish Farm and Fisheries Ltd | Wisbech | 2025 |
| Willowcroft Sporthorses Limited | Portrush | 2022 |
| Willowdale Hire Ltd | Lancaster | 2026 |
| Willowdene Rehabilitation Limited | Halesowen | 2002 |
| Willowdene Watercress & Trout Farm Ltd | North Yorkshire | 2005 |
| Willowfield Farm Ltd | Chichester | 2016 |
| Willowfields Sanctuary & Rescue CIC | Liverpool | 2025 |
| Willowgate Trout & Salmon Fishery Limited | Spalding | 2009 |
| Willows Fishery Limited | Chippenham | 2019 |
| Willows Station Ltd | Preston | 2016 |
| Willowsland Ltd | Mildenhall | 2024 |
| Willowtree Dachshunds Ltd | Bargoed | 2021 |
| Wills and Wilkin Limited | Ware | 1963 |
| Wills Oakden Sales Ltd | Carnforth | 2025 |
| Wills Oakden Training Ltd | Cupar | 2023 |
| Willson's Electrical Limited | Mablethorpe | 2013 |
| Willswood Equine Limited | Southampton | 2020 |
| Willswood Farm Ltd | Southampton | 2026 |
| Willy Cobden & Sons Ltd | Newton | 2024 |
| Wilmar and Olive Ventures Limited | Liverpool | 2025 |
| Wilmington Trout Farm Limited | Sheffield | 2000 |
| Wilsco 267 Limited | Salisbury | 1998 |
| Wilsea Ltd. | Peterhead | 2003 |
| Wilsheires Farm Limited | London | 2025 |
| Wilson Agriculture Ltd | Jedburgh | 2025 |
| Wilson Armitage & Sons Limited | Nr Huddersfield | 1964 |
| Wilson Catching Services Limited | Northampton | 2010 |
| Wilson Farm Contracting Ltd | King'S Lynn | 2023 |
| Wilson Farming Ltd | Great Barrow | 2013 |
| Wilson Farmlands Limited | Antrim | 2000 |
| Wilson Farms Limited | Newry | 2010 |
| Wilson Fishing Limited | Buckie | 2002 |
| Wilson Forest Products Limited | Ayr | 2002 |
| Wilson Hire Limited | St Helens | 2009 |
| Wilson of Woodside Limited | Carlisle | 2004 |
| Wilson Poultry Limited | Enniskillen | 2011 |
| Wilson Rees Limited | Whitchurch | 2014 |
| Wilson Shellfish Limited | Brora | 2025 |
| Wilson Stephen Ltd. | Fraserburgh | 2003 |
| Wilson Whitehall Ltd | Insch | 2023 |
| Wilson's Chickens Limited | Ballymena | 2015 |
| Wilsons (Gate Farm) | Cumbria | 2007 |
| Wilsons Contractors Limited | Preston | 2015 |
| Wilsons Contractors NI Limited | Ballyclare | 2020 |
| Wilsons Farms Ltd | Omagh | 2022 |
| Wilsons Hampshire Ltd | Christchurch | 2018 |
| Wiltcrest Limited | Preston | 1980 |
| Wilton Fallen Stock Limited | Dorchester | 2023 |
| Wilton Farm Limited | Buxton | 2008 |
| Wilton Hunt Limited | Dorchester | 2012 |
| Wilton Property Consultants Limited | Norwich | 2019 |
| Wilts and Hants Tree Care Ltd | Salisbury | 2022 |
| Wiltshire BEE Centre Limited | Chippenham | 2017 |
| Wiltshire Bees & Honey Ltd | Kington | 2025 |
| Wiltshire Countryside Services Ltd | Salisbury | 2025 |
| Wiltshire Farms Limited | London | 2025 |
| Wiltshire Game Ltd | Dorset | 2007 |
| Wiltshire Truffles Limited | Marlborough | 2014 |
| Wimbleball FLY Fishery Limited | Tiverton | 2019 |
| Wimborne Turf Company Limited | Wimborne | 2002 |
| WIN Hill Enterprises Ltd | Crumlin | 2012 |
| Winacre Brow Farm Limited | Southport | 2011 |
| Winaway Ltd | Anstruther | 2018 |
| Wincham Holsteins Limited | Northwich | 2006 |
| Winchester Tree Surgeons Limited | Eastleigh | 1997 |
| Windell Farming Ltd | Fareham | 2021 |
| Windemer Contractors Limited | Norwich | 2010 |
| Windermere Food Farm CIC | Windermere | 2025 |
| Windfarms M&A Ltd | London | 2008 |
| Winding Wood Apiary Ltd | London | 2024 |
| Windmill Animal Farm Limited | Preston | 2002 |
| Windmill Crop Production Ltd | Rowhook | 2022 |
| Windmill Down Farms Limited | Bury St Edmunds | 1977 |
| Windmill Equestrian Ltd | Lichfield | 2016 |
| Windmill Farm Equestrian Centre Limited | Wokingham | 2023 |
| Windmill Farm Equestrian Ltd | Lichfield | 2016 |
| Windmill Farm Estate (Somerset) Ltd | Wedmore | 2022 |
| Windmill Farm Estate Limited | Rugeley | 2016 |
| Windmill Hill City Farm Limited | Bristol | 1979 |