| TJL Trading Ltd | Wholesale & retail | 2017 |
| TKB Properties (SW) Ltd | Real estate | 2024 |
| TM Design & Development Ltd | Professional & scientific | 2006 |
| Tm.Evans Landscape & Fencing Contractor Ltd | Administrative & support | 2024 |
| TMM Holdings Limited | Construction | 2015 |
| Toad Counselling Limited | Health & social care | 2018 |
| TOL Guitars Ltd | Manufacturing | 2025 |
| Tomwill (Holdings) Limited | Wholesale & retail | 2017 |
| Tooltrove Ltd | Wholesale & retail | 2023 |
| Top 100 Golf Limited | Extraterritorial | 2016 |
| Top Choice Accountants Limited | Professional & scientific | 2020 |
| Top Class Tutors Devon and UK Ltd | Education | 2025 |
| Top Meadow Farm Limited | Wholesale & retail | 2020 |
| Torbay Hotel Ltd | Hospitality | 2012 |
| Toross 4 Limited | Transport & logistics | 1990 |
| Torridge & District Motor Cycle Club Limited | Other services | 1990 |
| Torridge Construction Limited | | 1984 |
| Torridge Growing Together CIC | Agriculture & fishing | 2023 |
| Torridge Solutions Ltd | Manufacturing | 2017 |
| Torridge Training Consultants Ltd | Professional & scientific | 2013 |
| Torridgenet Ltd | Information & communication | 2019 |
| Total Bricklaying SW Ltd | Other services | 2019 |
| Tower House Dental Practice Ltd | Health & social care | 2017 |
| TPO Assets Limited | Real estate | 2025 |
| TPO Developments Limited | Construction | 2025 |
| TPO Enterprises Limited | Financial services | 2024 |
| TPO Global Limited | Administrative & support | 2024 |
| Transilience CIC | Information & communication | 2023 |
| Transzur Limited | Professional & scientific | 2025 |
| Traust Risk Limited | Financial services | 2021 |
| Traust Structured Limited | Professional & scientific | 2023 |
| Travel That's Goodenough Ltd | Administrative & support | 2021 |
| Tree Fella Southwest Ltd | Agriculture & fishing | 2023 |
| Tree View Stratton Management Company Limited | Professional & scientific | 2006 |
| Treepad Adventures Limited | Arts & recreation | 2023 |
| Treepad Limited | Hospitality | 2023 |
| Trelawney Court Property Company Limited | Households | 2024 |
| Trelydarth Ltd | Hospitality | 2022 |
| TRI Rescue Limited | Other services | 2024 |
| Truependous Ltd | Education | 2022 |
| TTO Group Limited | Other services | 2025 |
| Ttvs | Other services | 2008 |
| Turner's Butchers Limited | Wholesale & retail | 2003 |
| Twenty Miles Limited | Financial services | 2015 |
| Two Rivers Kindergarten CIC | Education | 2011 |
| U 9090 Limited | Hospitality | 2014 |
| UK Car Valeting Limited | Wholesale & retail | 2026 |
| UK Leisure Parts Limited | Manufacturing | 2015 |
| Ultimatescenes.Com Limited | Professional & scientific | 2007 |
| Ultratel Limited | Real estate | 2002 |
| Union Close Management Company Ltd | Real estate | 2015 |
| Unitchain Limited | Construction | 1994 |
| Urbangate Limited | Real estate | 2002 |
| USE Holdings Ltd | Administrative & support | 2018 |
| V Burrows Technical Services Ltd | Information & communication | 2023 |
| Valley END Residents Association | Households | 2014 |
| Valley Farm Holidays Limited | Hospitality | 2022 |
| Value House Stores Limited | Wholesale & retail | 2003 |
| Vanscape Southwest Ltd | Wholesale & retail | 2021 |
| Vanstone Kitchens Limited | Manufacturing | 2017 |
| Vaping IS Personal Ltd | Wholesale & retail | 2016 |
| Varde Creative Limited | Information & communication | 2010 |
| Vellender Limited | Professional & scientific | 2024 |
| Vertical Stone Limited | Information & communication | 2014 |
| Vetlink Consulting Services Limited | Professional & scientific | 2026 |
| VIA Energy Ltd | Construction | 2021 |
| Victoria Celaschi Property Ltd | Real estate | 2020 |
| Villabianca Management Limited | Professional & scientific | 2015 |
| Vinyl Kitchen Records Ltd | Manufacturing | 2024 |
| Visit Westward HO! Ltd | Real estate | 2024 |
| Vitalsign Health Limited | Information & communication | 2025 |
| Viva Violins Limited | Manufacturing | 2021 |
| Vlwb Limited | Manufacturing | 2020 |
| Vocal Massage Training UK Ltd | Arts & recreation | 2020 |
| Vodberry Ltd | Manufacturing | 2023 |
| Voice Care Centre Ltd | Arts & recreation | 2017 |
| Volksleisure Limited | Manufacturing | 2015 |
| Vortek Tuning LLP | | 2023 |
| Vpcc Limited | Arts & recreation | 2024 |
| W Concrete Works Ltd | Construction | 2026 |
| W D Joinery Ltd | Construction | 2002 |
| W F Western Farming Limited | Agriculture & fishing | 2014 |
| W.H. Chope & Sons Limited | Wholesale & retail | 1956 |
| W.S. Hunt's Commercial Properties Limited | Real estate | 1949 |
| WAL Construction Ltd | Construction | 2017 |
| Wallthwaite Limited | Extraterritorial | 2013 |
| Wanderhouse Ltd | Information & communication | 2025 |
| Wanderlust Properties Ltd | Real estate | 2020 |
| Ward Agri Limited | Agriculture & fishing | 2020 |
| Ward Family Investments Ltd | Professional & scientific | 2019 |
| Warmingtons Limited | Wholesale & retail | 2008 |
| Warrior Women Project CIC | Arts & recreation | 2023 |
| Wave Renovations Ltd | Construction | 2016 |
| Waves Management and Advisory Services Ltd | Information & communication | 2025 |
| WDY Construction Ltd | Construction | 2023 |
| WE Buy ANY Surfboard Limited | Wholesale & retail | 2018 |
| Welcombe Skincare Ltd | Wholesale & retail | 2021 |
| Wendy Homes (Camborne) Limited | Construction | 2011 |
| West Coast Solar Ltd | Construction | 2022 |
| West END Precision Holdings Ltd | Financial services | 2023 |