| Westcountry Logistics Ltd | Construction | 2025 |
| Westcountry Premier Limited | Extraterritorial | 2004 |
| Westcountry Tank Replacements Limited | Other services | 2019 |
| Westdown Fabrications Limited | Manufacturing | 2024 |
| Western Castors and Wheels Limited | Wholesale & retail | 1979 |
| Western Fields Limited | Real estate | 2023 |
| Western Garage Torbay Limited | Wholesale & retail | 2008 |
| Western Industrial Products Limited | Wholesale & retail | 2005 |
| Western Lightning Ltd | Manufacturing | 2017 |
| Western Medical Services Limited | Health & social care | 2023 |
| Western Salerooms Ltd | Wholesale & retail | 2024 |
| Western Stonemasonry Limited | Construction | 2024 |
| Westgate Systems Ltd | Professional & scientific | 2026 |
| Westhuis Ltd | Construction | 2024 |
| Westlake’S of Bovey Ltd | Wholesale & retail | 2024 |
| Westminster Law South Devon Ltd | Professional & scientific | 2022 |
| Westomatic Vending Services Limited | Manufacturing | 1966 |
| Westward Investment Management Services (UK) Limited | Construction | 1983 |
| Westwood Meters Ltd | Wholesale & retail | 1961 |
| WFC Trustees Limited | Professional & scientific | 2022 |
| Whimbear Studios Ltd | Information & communication | 2025 |
| Whisstocks Developments Limited | Real estate | 2004 |
| Whistle and Wedge Limited | Wholesale & retail | 2014 |
| White Cat Catering Ltd | Hospitality | 2021 |
| White Coast Shopfitters Limited | Construction | 2005 |
| White Cotton Ltd | Professional & scientific | 2014 |
| White Lion HR Consulting Limited | Administrative & support | 2017 |
| White Rose Tarmacadam Limited | Construction | 2008 |
| White Rose Taverns (S W) Ltd | Hospitality | 2006 |
| White Wings Investments Ltd | Extraterritorial | 2020 |
| Whiteway Carpenters Limited | Construction | 2009 |
| Whiteway Estates Ltd | Real estate | 2022 |
| Wholesale Stationers(Devon)Limited | Wholesale & retail | 1953 |
| Widecombe Fair Committee Company Limited | Arts & recreation | 1992 |
| Widerstand Ltd | Households | 2024 |
| Wignalls & Co (SW) Limited | Manufacturing | 2015 |
| Wignalls Holdings Limited | Financial services | 2018 |
| Wignalls Limited | Construction | 2002 |
| Wild New Routes Limited | Health & social care | 2021 |
| Wild Products Ltd | Manufacturing | 2020 |
| Wild Swimscapes Ltd | Construction | 2025 |
| Wild Tiger Films Ltd | Information & communication | 2011 |
| Wilder Sauna Ltd | Health & social care | 2025 |
| Wildfell Limited | Real estate | 2018 |
| Wildflow Media Ltd | Information & communication | 2026 |
| Wildsummit Ltd | Wholesale & retail | 2025 |
| Will Stoppard Management Limited | Administrative & support | 2007 |
| Willhays Ltd | Administrative & support | 2021 |
| William Barsley Carving Ltd | Wholesale & retail | 2025 |
| Williams & Triggs Limited | Administrative & support | 2019 |
| Williams Hedge and Co Ltd | Real estate | 2010 |
| Williams Property (South West) Ltd | Construction | 2015 |
| Willow Counselling Hub CIC | Education | 2026 |
| Willow END Park Management Co Ltd | Households | 2024 |
| Willow Garden Services and Sales (SW) Ltd | Administrative & support | 2017 |
| Willow PTY Group Ltd | Real estate | 2024 |
| Willrose Electrical Limited | Wholesale & retail | 2015 |
| Wilson's Fryer Ltd | Hospitality | 2024 |
| Wilton Bradley Holdings Limited | Wholesale & retail | 2015 |
| Wilton Bradley Limited | Wholesale & retail | 2015 |
| Wilton Facilities Ltd | Real estate | 2013 |
| Wilton Scaffolding Limited | Construction | 2025 |
| WIN the World Comps Ltd | Professional & scientific | 2025 |
| Winalot Limited | Extraterritorial | 2024 |
| Windcast Weather Limited | Manufacturing | 2024 |
| Windle Developments Limited | Construction | 2017 |
| Winfield Group Ltd | Construction | 2016 |
| Winkleigh Timber Holdings Limited | Financial services | 2022 |
| Winkleigh Timber Limited | Manufacturing | 1997 |
| Winter Court Properties Ltd | Real estate | 2019 |
| Wintour Accessories Ltd | Wholesale & retail | 2022 |
| Wired London Trading Limited | Hospitality | 2021 |
| Wisdom Shipping Limited | Administrative & support | 2021 |
| Wise Goose Limited | Education | 2012 |
| Wiser Property Ltd | Real estate | 2015 |
| Wisteria Kitchens Ltd | Wholesale & retail | 2012 |
| Witcomb Architectural Design Limited | Professional & scientific | 2003 |
| Withers Jones Consulting Limited | Professional & scientific | 2021 |
| Within Temptation Ltd | Arts & recreation | 2019 |
| WLG Consultants Ltd | Professional & scientific | 2019 |
| WM Construction (South West) Limited | Construction | 2005 |
| WMS Congress Limited | Administrative & support | 2016 |
| Wodaptive CIC | Manufacturing | 2023 |
| Wolborough Crest Management Limited | Professional & scientific | 1998 |
| Wolf Rock Investments Ltd | Financial services | 2016 |
| Woodburner Fitting Services Ltd | Construction | 2022 |
| Woodcraft Bespoke Windows Ltd | Construction | 2011 |
| Woodeze Limited | Construction | 2025 |
| Woodground Limited | Administrative & support | 2005 |
| Woodhayes Enterprises Limited | Construction | 2005 |
| Woodland Events Devon Limited | Administrative & support | 2026 |
| Woodleigh Management Company Limited | Households | 1989 |
| Woodrow Retirement Home Limited | Health & social care | 2003 |
| Woodward & Woodward Limited | Wholesale & retail | 2010 |
| Woollymammothstudio Ltd | Professional & scientific | 2023 |
| Words by Emma Ltd | Information & communication | 2023 |
| Working Capital Consulting Limited | Professional & scientific | 2006 |
| Working With Wood Limited | Manufacturing | 2002 |
| Worksmart-Ai Ltd | Professional & scientific | 2025 |
| World of Mobility Store Ltd | Wholesale & retail | 2019 |