| Warbleoak | Extraterritorial | 2000 |
| Warren Hughes Limited | Construction | 2009 |
| Waterhouse Fayre Limited | Manufacturing | 2015 |
| Waterman's Country Supplies Ltd | Wholesale & retail | 2014 |
| WCR Holdings Limited | Financial services | 2024 |
| WE ARE Humain Ltd | Information & communication | 2024 |
| Webber Automotive Ltd | Wholesale & retail | 2024 |
| Webbstone Ltd | Construction | 2014 |
| Wedgewood Buildings Limited | Construction | 2007 |
| Wedgewood Construction Services Limited | Construction | 2019 |
| Wedgewood Equipment Limited | Administrative & support | 2022 |
| Wedgewood Groundworks Limited | Construction | 2014 |
| Weeke Farm Limited | Agriculture & fishing | 2012 |
| Weirpool Management Ltd | Households | 2023 |
| Welden & Edwards Estate Management Limited | Real estate | 2014 |
| Welden Property Management Ltd | Real estate | 2005 |
| Wellbrook Property Ltd | Construction | 2025 |
| Wellington (Somerset) Theatre Trust Company Limited | Real estate | 1978 |
| Wellington Laundry Ltd | Other services | 2022 |
| Wellington Masonic Hall Company Limited | Real estate | 2016 |
| Wendy Kingdom Limited | Professional & scientific | 2003 |
| West Barton Farm Limited | Financial services | 2021 |
| West Country HOG Roasts Limited | Hospitality | 2015 |
| West Country Kingdom Ltd | Agriculture & fishing | 2021 |
| West Country Real Estates Limited | Real estate | 2003 |
| West Country Renovations Limited | Construction | 2003 |
| West Pitt Farm Holidays Limited | Energy | 2014 |
| West Pitt Farm Water Limited | Water & waste | 2015 |
| West Ridge Veterinary Practice (Cornwall) Ltd. | Professional & scientific | 2023 |
| West Ridge Veterinary Practice Holdings Ltd | Financial services | 2026 |
| West Ridge Veterinary Practice Limited | Professional & scientific | 2003 |
| West Taunton Powder Coating Limited | Manufacturing | 2011 |
| Westaway Reach Management Company Limited | Households | 2015 |
| Westcott Oakford Limited | Agriculture & fishing | 1988 |
| Westcountry Drones Ltd | Professional & scientific | 2018 |
| Westcountry Golf Academy Limited | Arts & recreation | 2002 |
| Westcountry Media (UK) Limited | Professional & scientific | 2010 |
| Westcountry Property Limited | Construction | 2018 |
| Westhaven Homes Limited | Construction | 2008 |
| Westimber Preservation Limited | Construction | 1994 |
| Westlake Publications Limited | Professional & scientific | 2009 |
| Westleigh Flats Seaton (Management) Limited | Real estate | 2014 |
| Westmiddlewick Farm LOG Cabins Limited | Hospitality | 2009 |
| Westminster Digital Holdings Limited | Information & communication | 2023 |
| Westward Financial Management Limited | Financial services | 2005 |
| WH Engineering Limited | Professional & scientific | 2013 |
| Wharncliffe Limited | Construction | 2003 |
| Wheatlands Fabrication Ltd. | Construction | 2012 |
| White Escapes Limited | Hospitality | 2021 |
| White Rock Marketing Limited | Professional & scientific | 2014 |
| White Technology and Engineering Limited | Professional & scientific | 2006 |
| Whitecliffe Property Management Limited | Households | 2007 |
| Wilbert & Willow Ltd | Wholesale & retail | 2019 |
| Wild Tiverton CIC | Agriculture & fishing | 2023 |
| Wimbleball FLY Fishery Limited | Agriculture & fishing | 2019 |
| Windyfred Limited | Professional & scientific | 2023 |
| Winterstoke Properties Limited | Real estate | 1985 |
| Winzer Farming Ltd | Agriculture & fishing | 2026 |
| Witheridge AFC Limited | Arts & recreation | 2010 |
| Witheridge Garage Limited | Wholesale & retail | 2010 |
| Witheridge Sports Club Limited | Arts & recreation | 2010 |
| Withers Steele Limited | Professional & scientific | 2010 |
| Withycombe Farm Ltd | Construction | 2014 |
| WJW Structural Engineers Ltd | Professional & scientific | 2021 |
| Wollaston Hanks Ltd | Professional & scientific | 2021 |
| Wonderland Solutions Ltd | Transport & logistics | 2025 |
| Wood N' Head Limited | Construction | 2006 |
| Woodbeare Nurseries Limited | Agriculture & fishing | 2003 |
| Woodbury Reporting Limited | Health & social care | 2022 |
| Woodstock Sawmill Limited | Agriculture & fishing | 2024 |
| Woody Coombe | Agriculture & fishing | 2020 |
| Wotton of Tiverton Limited | Transport & logistics | 2004 |
| Wrentech Design Limited | Professional & scientific | 1985 |
| WRM Developments Limited | Real estate | 2026 |
| X L Planning Limited | Professional & scientific | 2016 |
| Xcilis Limited | Manufacturing | 2016 |
| XL Works Limited | Administrative & support | 2009 |
| Xmoor Enduro Club Ltd | Arts & recreation | 2016 |
| Y Saklav Ltd | Hospitality | 2025 |
| Ycjp Limited | Real estate | 2021 |
| Yellow Construction Limited | Construction | 2016 |
| Yellow Property Holdings Limited | Financial services | 2018 |
| Yield Property UK Ltd | Information & communication | 2026 |
| Yoga Junction Limited | Arts & recreation | 2000 |
| Your Store Bridgwater Ltd | Other services | 2017 |
| Your True Path to Wellness (E&W) CIC | Other services | 2024 |
| ZAK Morgan Estates Ltd | Real estate | 2022 |
| Zaviva Ltd | Administrative & support | 2021 |
| Zeamos Consulting Ltd | Professional & scientific | 2021 |
| ZIAN2009 Ltd | Hospitality | 2025 |
| Zlatka Oneway Limited | Construction | 2026 |