| THE Real Mccoy (Exeter) Limited | Wholesale & retail | 2001 |
| THE Ritso Fishing Company Limited | Agriculture & fishing | 2000 |
| THE River Dart Steamboat Company Limited | Professional & scientific | 1991 |
| THE Royal Western Yacht Club of England Limited | Arts & recreation | 2003 |
| THE Saddlery Shop Limited | Wholesale & retail | 2004 |
| THE Salcombe Coffee Company Limited | Hospitality | 2003 |
| THE Tax Shop Limited | Professional & scientific | 1981 |
| THE Tool Shed Ltd | Wholesale & retail | 2002 |
| THE Trading Post (Kingsbridge) Ltd | Wholesale & retail | 2003 |
| THE UK Nominee Company Limited | Professional & scientific | 2004 |
| THE UNA Group Limited | Real estate | 2004 |
| THE Wakeham Barns Management Company Limited | Households | 1993 |
| Think Information Technology Limited | Information & communication | 2000 |
| Thomas & Mcmurray Limited | Professional & scientific | 2007 |
| Thomas & SON (Seaton) Limited | Hospitality | 2002 |
| Thompson Jenner Financial Services Limited | Financial services | 2001 |
| Thompson Jenner Services Limited | Professional & scientific | 1988 |
| Thorne Carter & Aspen Limited | Real estate | 2003 |
| Thule Contracting Ltd | Transport & logistics | 2017 |
| Times Square (UK) Limited | Wholesale & retail | 2002 |
| Tirion UK Limited | Professional & scientific | 2002 |
| Tiverton Car Centre Limited | Wholesale & retail | 2000 |
| To-An-Fro Car & Van Hire Limited | Administrative & support | 1989 |
| Tollgate Farming Limited | Agriculture & fishing | 1995 |
| Tollgate Holdings Limited | Professional & scientific | 1995 |
| Tonkin Materials Testing Limited | Construction | 2006 |
| Top Class Barber Honiton Ltd | Other services | 2023 |
| Top Van Limited | Professional & scientific | 2003 |
| Torbay Citizens Advice Bureaux | Other services | 1993 |
| Torbay Fish Limited | Agriculture & fishing | 2006 |
| Torbay Marine Engineering Limited | Energy | 1988 |
| Torbay Steam Rally Association | Arts & recreation | 2005 |
| Torbay Tarmacadam Limited | Hospitality | 1969 |
| Torquay's Pioneers Limited | Administrative & support | 1999 |
| Total Financial Solutions (UK) Limited | Financial services | 2003 |
| Totnes Consultancy Limited | Professional & scientific | 2006 |
| Totnes Waterside (Phase III) Management Limited | Households | 2004 |
| Trade Windows North Devon Limited | Construction | 2006 |
| Tradewinds Restaurant (Teignmouth) Limited | Hospitality | 2003 |
| Tradray Limited | | 1989 |
| Trafalgar Willand Limited | Wholesale & retail | 2002 |
| Trecin Ltd | Other services | 2024 |
| Tree Tops (Salcombe) Limited | Households | 2015 |
| Trisan Enterprises Limited | Construction | 2001 |
| Tristan Johnson Limited | Construction | 1988 |
| Troy Ltd | Agriculture & fishing | 2005 |
| Trugs Limited | Wholesale & retail | 2007 |
| Turbothermic Limited | Extraterritorial | 1964 |
| Turnbull & Co Accountants Limited | Professional & scientific | 2003 |
| Turner Investments (SW) Ltd | Real estate | 2024 |
| Twentyeight Chinese Takeaway Ltd | Hospitality | 2021 |
| Two Moors Homes Limited | Construction | 2000 |
| Two Moors Veterinary Practice Ltd | Professional & scientific | 2016 |
| Tyne Electrical Services Ltd. | Construction | 2001 |
| Ugborough Garages Limited | Wholesale & retail | 1964 |
| UNA Property Limited | Financial services | 2015 |
| Una-Quin Limited | Financial services | 2015 |
| Underwood Wright Limited | Administrative & support | 2003 |
| Unex Designs Limited | Manufacturing | 1986 |
| Unite - Carers in MID Devon | Health & social care | 2003 |
| Urethane Technical Services Limited | | 1978 |
| Utopia Productions Limited | Information & communication | 1998 |
| V. Cook and Partners Language Services | | 1987 |
| Vale Services (Devon) LLP | | 2015 |
| Vale Veterinary Group (LA) Ltd | Professional & scientific | 2015 |
| Vale Veterinary Group (SA) Limited | Professional & scientific | 2015 |
| Vaskes Ltd | Other services | 2023 |
| Vasto Food Ltd | Hospitality | 2019 |
| Vawer Ltd | Transport & logistics | 2018 |
| VB Home Deco GAS & Water Limited | Construction | 2026 |
| VCT Ltd. | Manufacturing | 1999 |
| Venezia Exeter Limited | Hospitality | 2003 |
| Vernon Demarco Scandinavian Crafts Limited | Extraterritorial | 1964 |
| Versy & Peter Greig Limited | Real estate | 2006 |
| VI - Spring Limited | Manufacturing | 1901 |
| Vicele Paediatric Advanced Practitioner Services Ltd | Health & social care | 2025 |
| Vici Copy Ltd | Information & communication | 2019 |
| Victoria J Heaton Ltd | Households | 2013 |
| Video Security Services Limited | Manufacturing | 1981 |
| Vigo Limited | Wholesale & retail | 1998 |
| Village Shops Limited | Real estate | 2002 |
| Virtual Club Limited | Information & communication | 2000 |
| Vospers Motor House Limited | Wholesale & retail | 1951 |
| Vospers of Plymouth Limited | Wholesale & retail | 1971 |
| Vospers Rentacar Limited | Extraterritorial | 1956 |
| Vuletik Ltd | Other services | 2023 |
| W J Wicks & Sons Limited | Construction | 2003 |
| W.H.Mounstephen,Limited | | 1933 |
| W.J. Avery and Company Limited | Construction | 1954 |
| W.J.Mathews(Exeter)Limited | Manufacturing | 1941 |
| Wackorsky Ltd | Information & communication | 1996 |
| Walker Developments (South West) Limited | Construction | 1988 |
| Walkers Enterprises (Devon) Limited | Financial services | 1972 |
| Wall Park Property Co. Limited | Real estate | 1999 |
| Wallflower Court Management Limited | Households | 1985 |
| Walter H Squires & SON Limited | Other services | 2008 |
| Ward Reece Ltd | Real estate | 2006 |
| Ware Builders & Contractors Limited | Construction | 2005 |
| Warwicks of Plymouth Limited | Real estate | 1947 |
| Wavetech Consultancy Ltd | Information & communication | 2001 |