| Titan Exhausts Ltd | Wholesale & retail | 2016 |
| Tong GAU Consultants Limited | Professional & scientific | 2023 |
| Townsend Park Ltd | Construction | 2019 |
| Treadstone Holdings Limited | Real estate | 2015 |
| Trendwing Limited | Manufacturing | 1987 |
| Trow Close Management Company Limited | Households | 2006 |
| True to YOU Limited | Professional & scientific | 2021 |
| TS Diving Services Ltd | Manufacturing | 2025 |
| TSM Contractors Limited | Construction | 2019 |
| Twin Film Production Limited | Information & communication | 2025 |
| Two Development Limited | Real estate | 2020 |
| UAV Surveys and Information Ltd | Professional & scientific | 2019 |
| Unique Holiday Stays Limited | Real estate | 2024 |
| Unlock Psychology Ltd | Education | 2024 |
| Utopia Salon Management Ltd | Other services | 2025 |
| V Wing Ltd | Administrative & support | 2021 |
| Valley Court (Caterham) RTM Company Limited | Households | 2026 |
| Veal Global Limited | Professional & scientific | 2015 |
| Venture Business Consulting Limited | Professional & scientific | 2019 |
| Vestra Property Management Limited | Households | 2018 |
| Vexis Precision Ltd | Professional & scientific | 2025 |
| Victoria Embankment Management Company Limited | Households | 2006 |
| VR46 Property Ltd | Real estate | 2019 |
| VWF Properties Ltd | Real estate | 2010 |
| W & L South Coast Investments Ltd | Construction | 2020 |
| W.H.Lyon Limited | Real estate | 1938 |
| Washington House (Seaton) Management Company Limited | Households | 1984 |
| WATER2U Ltd | Extraterritorial | 2019 |
| WCS Building Services Ltd | Construction | 2025 |
| Wehear Ltd | Health & social care | 2023 |
| Weimar Management Company Limited | Households | 2016 |
| Weleful Limited | Health & social care | 2022 |
| Wellcare Health Limited | Health & social care | 2025 |
| West END Procurement Limited | Professional & scientific | 2019 |
| Westbrook Travel Limited | Transport & logistics | 1988 |
| Westcountry Leisure (SW) Ltd | Hospitality | 2022 |
| Westcountry Water Limited | Transport & logistics | 2007 |
| Westleigh Management Company Ltd | Extraterritorial | 2017 |
| Wheatley Devon (Services) Limited | Real estate | 2022 |
| Wheatley Devon Agri Ltd | Agriculture & fishing | 2024 |
| Wheatley Devon Commercial Ltd | Real estate | 2024 |
| Wheatley Devon Ltd | Real estate | 2016 |
| Wheaton Property Limited | Real estate | 1995 |
| White Book Media Ltd | Information & communication | 2023 |
| White Star Broadcast Ltd | Financial services | 2023 |
| William James Holdings (SW) Ltd | Financial services | 2025 |
| William James Property (SW) Ltd | Real estate | 2025 |
| William James Scaffolding Limited | Construction | 2020 |
| Winchester House (Highbury) Limited | Households | 1993 |
| Windsor Court (Seaton) Limited | Hospitality | 1997 |
| Wireworks Management Limited | Households | 2005 |
| Wise Compassion Ltd | Health & social care | 2021 |
| Women in Bloom Psychology Ltd | Health & social care | 2024 |
| Woodbrooke Holdings Limited | Financial services | 2019 |
| Woodbrooke Limited | Manufacturing | 2006 |
| Woodbrooke Property Ltd | Real estate | 2019 |
| Woodlands Management Company (2001) Limited | Professional & scientific | 2001 |
| Woodside Lodge RTM Company Limited | Real estate | 2009 |
| World in Mind Ltd | Health & social care | 2022 |
| Wyllspring Holdings Ltd | Real estate | 2024 |
| Xbox Nation Limited | Information & communication | 2026 |
| Xclusively Jaguar Limited | Other services | 2009 |
| XJF-CTRD-2223 Limited | Other services | 2026 |
| YBT Estates Limited | Real estate | 2021 |
| YEO River Holdings Ltd | Financial services | 2025 |
| York Counselling Psychology Limited | Professional & scientific | 2022 |
| York House (Seaton) Limited | Households | 1984 |
| Zadco Properties Limited | Real estate | 2001 |
| Zeus Security Solutions Ltd | Administrative & support | 2021 |
| ZOE Mawby Psychology Ltd | Health & social care | 2022 |
| ZOE Vieira Ltd | Administrative & support | 2021 |