| With the Wild CIC | Watchet | 2022 |
| With YOU WE Blossom CIC | Thetford | 2026 |
| Withamley Limited | Sheffield | 2019 |
| Witherdon Farm Limited | Beaworthy | 2006 |
| Withers Fruit Farm Limited | Cheltenham | 2015 |
| Withgill Farm Limited | Clitheroe | 2002 |
| Withington Park Estate Ltd | London, | 2022 |
| Withnell Fisheries Limited | Burnley | 2021 |
| Withy Farm Limited | Canterbury | 2020 |
| Withybed Limited | Birmingham | 2003 |
| Withypitts Dahlias Ltd | Crawley | 2012 |
| Witnesham Hall Equestrian Ltd | Bolton | 2022 |
| Witney Farms Limited | Kelvedon | 2017 |
| Witney Grain Limited | Swindon | 2001 |
| Witney Motor Company Limited | Maldon | 2010 |
| Wits END Farm (Waterperry) Limited | Thame | 2021 |
| Witter Farming Limited | Sandbach | 2023 |
| Witton Hall Farm Limited | Wymondham | 2007 |
| Witton Sporting Limited | Darlington | 2017 |
| WIX Farms Limited | Braintree | 2014 |
| WIX Farms Poultry Ltd | Colchester | 2019 |
| Wizards of OSS Limited | Southampton | 2000 |
| WJ & DA Rhodes Limited | Accrington | 2020 |
| WJ & S Underhill Ltd | Stafford | 2017 |
| WJ & VJ Case Ltd | Ulverston | 2025 |
| WJ Baker and Partners Ltd | King'S Lynn | 2018 |
| WJ Timber Harvesting Ltd | Carmarthen | 2019 |
| WJ Williams Farming Limited | Prestatyn | 2022 |
| WJB Farms Ltd | Ballymoney | 2021 |
| WJE Forestry Ltd | Keswick | 2021 |
| WJF Countryside Services Ltd | Southam | 2024 |
| WJM Contracting Limited | Tenbury Wells | 2025 |
| WJM Fisheries Ltd | Armagh | 2024 |
| WK Buse and SON Ltd | Wadebridge | 2012 |
| WK14SHELLFISH Ltd | Golspie | 2026 |
| WKB Shipping Ltd | Hull | 2018 |
| WKD Trained Dogs Limited | Birmingham | 2014 |
| WKW Fishing Ltd | Macduff | 2026 |
| WL Beattie & Sons Ltd | Hexham | 2014 |
| WL, ME & TG Holdings Limited | Abersoch | 2025 |
| WLD Enterprises Ltd | Londonderry | 2025 |
| WLL Civils Ltd | Swansea | 2008 |
| WM Mackie Group Limited | Perth | 2025 |
| WM Mcneill & SON Ltd | Londonderry | 2013 |
| WM. Howard & Co. Limited | Retford | 1953 |
| WM. Potter & Sons (Rainton) | North Yorkshire | 1961 |
| WM. Snaith & Sons Limited | Darlington | 1958 |
| Wm.Allison & Sons Limited | Bishop Auckland | 1954 |
| Wm.Bracey,Limited | Great Yarmouth | 1945 |
| Wm.Grant(Paull)Limited | Hull | 1942 |
| Wm.Kerr (Farms) Limited | Woodbridge | 1954 |
| Wm.Youngs & SON (Farms) Limited | Aylsham | 1956 |
| WMAN10 Ltd | Didcot | 2021 |
| WMI Enterprises Ltd | Shetland | 2019 |
| WMS (Fishing) Limited | Grampian | 2002 |
| WMT Agriculture Ltd | York | 2018 |
| WN3 Angling and Conservation CIC | Wigan | 2024 |
| WND Keith Ltd. | Dingwall | 1992 |
| Wnhh Ltd | Bury St. Edmunds | 2021 |
| WNJ (Derculich) Limited | Ulceby | 1951 |
| WNL Investments Limited | Edinburgh | 1928 |
| Wnsl Ltd | Holmfirth | 2022 |
| Wojfish Limited | Cumbria | 2018 |
| Wold Farms Limited | Hessle | 2014 |
| Wold House Farm Limited | York | 2019 |
| Wold Trees Ltd | Brough | 2018 |
| Woldale Angling Club Ltd | Chorley | 2024 |
| Wolden Garden Centre Limited | St. Albans | 2008 |
| Woldingham Vines Ltd | Woldingham | 2022 |
| Wolds Barn Produce Ltd | Malton | 2020 |
| Wolds Produce (Holdings) Ltd | Pocklington | 2019 |
| Wolds Produce Ltd | Pocklington | 2006 |
| Wolds Way Caravan and Camping Limited | Scarborough | 2010 |
| Wolds Wine Estate Limited | Nottingham | 2021 |
| Woldsvale Holdings Ltd | Malton | 2024 |
| Wolf Heart Pomskies UK Limited | Nottingham | 2022 |
| Wolf Meadows Farm Limited | Umberleigh | 2021 |
| Wolfe Farrier Ltd | Leicester | 2025 |
| Wolfe NW Ltd | Wirral | 2021 |
| Wolfhall Sporting Limited | Chippenham | 2016 |
| Wolfhampcote Farms Limited | Rugby | 1945 |
| Wolford Farm Limited | Taunton | 2025 |
| Wolfridge Alpaca Ltd | Bristol | 2019 |
| Wolfvalleystudsportshorseagency Limited | Beaworthy | 2021 |
| Wolgarston Dairy Farm Ltd | Stafford | 2022 |
| Wollemi Forestry Limited | Gosforth | 2016 |
| Wolsingham Park Farms Limited | Bishop Auckland | 1965 |
| Wolstonbury Kennels & Cattery Limited | Bolney | 2003 |
| Woltrex Limited | Sheffield | 2012 |
| Wolverton in the Valley Ltd | Dover | 2025 |
| Wolves Lane Consortium | London | 2019 |
| Wolvesacre Hall Ltd | Whitchurch | 2016 |
| Wombat Willow Limited | Ivybridge | 2017 |
| Wonder Hart Limited | Uckfield | 2011 |
| Wonderful Wine Limited | Cardiff | 2025 |
| Wonders of Blue Planet UK Ltd | West Drayton | 2024 |
| Wonkyenterprises Ltd | Exeter | 2024 |
| Wonston Wine Limited | Winchester | 2022 |
| Woobart Ltd | Bury St. Edmunds | 2021 |
| Wood Bros. (Farms) Limited | London | 1975 |