| W2C Limited | Construction | 2019 |
| Wade Estates SW Ltd | Real estate | 2024 |
| Waggy Mart Limited | Wholesale & retail | 2025 |
| Wagner Aerospace (GB) Ltd | Professional & scientific | 2013 |
| Wagner Holdings Limited | Financial services | 2015 |
| Wagner Plant Ltd | Administrative & support | 2015 |
| Wakeham Builders Limited | Construction | 2024 |
| Wakeham Farm Management Limited | Households | 2021 |
| Wakeham Investments Limited | Real estate | 1959 |
| Walker Lahive Limited | Professional & scientific | 2010 |
| Walker Leisure (Cornwall) Limited | Hospitality | 2023 |
| Walker Restaurants (Cornwall) Limited | Hospitality | 2023 |
| Walker Terrace Management Company Limited | Households | 2004 |
| Walkers Restaurants (West Truro) Limited | Hospitality | 2020 |
| Walkers Restaurants Limited | Hospitality | 1990 |
| Walkhampton Drainage Company Ltd | Administrative & support | 2026 |
| Wallaby Construction Ltd | Construction | 2016 |
| Wallsend Estates Limited | Hospitality | 1962 |
| Wallthrive Limited | Wholesale & retail | 1989 |
| Walter C Parson Limited | Other services | 1987 |
| Walter Cyril Parson Ltd | Extraterritorial | 2020 |
| Walter Douie Limited | Health & social care | 2012 |
| Walton Development and Construction Limited | Construction | 2000 |
| Walton Fabrications Limited | Manufacturing | 2021 |
| Walton Holdings (SW) Limited | Professional & scientific | 2021 |
| Walton Properties (SW) Ltd | Real estate | 2015 |
| WAN Thai Cooking Ltd | Hospitality | 2023 |
| Wanderlust Consulting Ltd | Information & communication | 2018 |
| Wandly Ltd | Hospitality | 2023 |
| Wang Plymouth Ltd | Hospitality | 2025 |
| Warberry Lodge RTM Company Limited | Households | 2021 |
| Ward Williams Strategic Consultancy Services Ltd | Professional & scientific | 2025 |
| Warlock (SW) Limited | Households | 2021 |
| Warm Company (SW) Limited | Professional & scientific | 2011 |
| Warm Milk Films Limited | Information & communication | 2023 |
| Warmlife Home Improvements Limited | Wholesale & retail | 1991 |
| Warmseal Windows and Doors Ltd | Construction | 2013 |
| Warmseal Windows and Roofs Ltd | Construction | 2019 |
| Warrier Investments Ltd | Real estate | 2024 |
| Warriewood Ltd | Health & social care | 2011 |
| Warson Beef Limited | Extraterritorial | 2013 |
| Washbourne Towers Management Co Ltd | Real estate | 2006 |
| Waste Chaps Ltd | Water & waste | 2025 |
| Watch the DOT Ltd | Information & communication | 2013 |
| Watcombe Park Limited | Construction | 2021 |
| Water Butts UK Ltd | Wholesale & retail | 2022 |
| Water Meadows (Torquay) Limited | Real estate | 2021 |
| Waterfield Garages Limited | | 1964 |
| Waterfield Homes Limited | Real estate | 2000 |
| Waterfield Lettings Limited | Real estate | 2003 |
| Waterfront Cleaning Services Ltd | Administrative & support | 2019 |
| Waterjet Profiles Plymouth Ltd | Manufacturing | 2016 |
| Waterlillie Clark Ltd | Construction | 2024 |
| Waters Park House Limited | Health & social care | 1997 |
| Waterside Estates Ltd | Real estate | 2019 |
| Waterside Newton Abbot Ltd | Real estate | 2026 |
| Waterwheel Owners Company Limited | Real estate | 2022 |
| Waterworxz Ltd | Construction | 2022 |
| Watford Cleaning Services Ltd | Other services | 2009 |
| Watt Prints Ltd | Manufacturing | 2024 |
| Watts Marine Ltd | Wholesale & retail | 2018 |
| Wattwise Electric Ltd | Construction | 2025 |
| Wave Wins Ltd | Arts & recreation | 2026 |
| Wavetrak Limited | Professional & scientific | 2015 |
| Waypoint Bar and Bistro Ltd | Hospitality | 2018 |
| Wayside Holiday Lets Limited | Hospitality | 2017 |
| WBF Chalets Ltd | Hospitality | 2023 |
| WBF Cottages Ltd | Hospitality | 2023 |
| WBF Estate Management Ltd | Real estate | 2023 |
| WBF Holdings Ltd | Financial services | 2023 |
| WBF Investments Ltd | Real estate | 2023 |
| WBF Leisure Ltd | Hospitality | 2023 |
| WBF Lodge Development Ltd | Construction | 2023 |
| WBF Moat Lodges Ltd | Construction | 2023 |
| Wcaf Limited | Hospitality | 2022 |
| WCR (SW) Limited | Wholesale & retail | 2009 |
| WD Technicians Limited | Construction | 2018 |
| WDB Development Ltd | Construction | 2018 |
| WDB Property Limited | Real estate | 2007 |
| WE ARE Digital Heroes Ltd | Administrative & support | 2019 |
| WE ARE Ease Group Limited | Financial services | 2023 |
| WE ARE Ease Holdings Limited | Financial services | 2021 |
| WE ARE Firsti Limited | Information & communication | 2020 |
| WE DO Multisports Limited | Education | 2025 |
| WE DO Windows Ltd | Administrative & support | 2012 |
| WE FIX Plymouth Ltd | Administrative & support | 2025 |
| WE Sell Fencing Ltd | Wholesale & retail | 2024 |
| Wealth Assets Property Ltd | Real estate | 2023 |
| Wealth Trading Limited | Financial services | 2017 |
| Wearenexo Limited | Information & communication | 2019 |
| Weatherby Medical Limited | Health & social care | 2018 |
| Weatherproof Systems Ltd | Construction | 2017 |
| Weav Limited | Professional & scientific | 2018 |
| Weaver Arboricultural Services Ltd | Agriculture & fishing | 2024 |
| Weaver Green Ltd | Wholesale & retail | 2015 |
| Weaver Green Showrooms Limited | Wholesale & retail | 2022 |
| Weavers Way Management Company Limited | Households | 2023 |
| Web AM Limited | Information & communication | 2022 |
| Web Design and SEO Company Limited | Information & communication | 2015 |
| Webb's Future Planning Limited | Financial services | 2025 |