| THE Vehicle Mechanics Ltd | Wholesale & retail | 2025 |
| THE Wardrobe Ensemble Limited | Arts & recreation | 2012 |
| THE Wheatsheaf Public House Ltd | Hospitality | 2015 |
| THE Wildlife Art Society International | Arts & recreation | 2006 |
| Thecrew Limited | Construction | 2019 |
| Theodore Townsend Limited | Wholesale & retail | 2025 |
| Theredlion@Heytesbury Ltd | Hospitality | 2020 |
| Theta UK Limited | Professional & scientific | 2005 |
| Thinksmart Development Limited | Information & communication | 2018 |
| THK Luxury Gazebos Ltd | Construction | 2020 |
| Thompson Security Limited | Administrative & support | 2025 |
| Thorndale (Exeter) Management Company Limited | Households | 1991 |
| Thorndale Number 2 (Exeter) Management Company Limited | Households | 1994 |
| Three 6 TEE Limited | Wholesale & retail | 2016 |
| Thresher Subsea Ltd | Professional & scientific | 2020 |
| Tickenham Court Farm Co.Limited | Agriculture & fishing | 1946 |
| Tickenham Developments Ltd | Construction | 2025 |
| Tickenham Gate Commercial Limited | Real estate | 2021 |
| Tidal Nomads Ltd | Wholesale & retail | 2026 |
| Tiffin @ the Pier Limited | Hospitality | 2015 |
| Tiffin Group Enterprises Limited | Real estate | 2012 |
| Tigroo Hospitality Limited | Hospitality | 2026 |
| Tillie’S School of Performing Arts Limited | Education | 2023 |
| TIM Bond Consultancy Limited | Other services | 2015 |
| Tiny Interactive Studios Ltd | Information & communication | 2021 |
| Titan Body Development Limited | Arts & recreation | 2016 |
| TJO Media Limited | Information & communication | 2023 |
| Tjsh Limited | Wholesale & retail | 2015 |
| TJT Properties SW Ltd | Real estate | 2024 |
| TMC Clevedon Limited | Financial services | 2016 |
| TMH Landscape Services Ltd | Administrative & support | 2019 |
| Toby Pinn Ltd | Professional & scientific | 2021 |
| Toller Holdings Limited | Financial services | 2022 |
| Toller Properties Limited | Real estate | 1988 |
| Toller Property Management Limited | Professional & scientific | 1966 |
| TOM Henshaw Financial Planning Ltd | Financial services | 2024 |
| Top Building Maintenance Ltd | Construction | 2018 |
| Total Vacations Limited | Administrative & support | 2007 |
| Total Pipeline Services Ltd | Construction | 2015 |
| Total Solutions IT Limited | Information & communication | 2022 |
| Touchline House Ltd | Hospitality | 2026 |
| TPF Holdings (Thames Valley) Ltd | Financial services | 2021 |
| TPG (Holdings) Limited | Construction | 2017 |
| TR Post Production Limited | Information & communication | 2006 |
| Translogi (Newport) Limited | Transport & logistics | 2019 |
| Tree Orchard Limited | Administrative & support | 2006 |
| Trelawney Home Management Company (Clevedon) Limited | Households | 2005 |
| Trelawney Jesmond Road Management Company Limited | Households | 2020 |
| Trending Treasure's Limited | Wholesale & retail | 2024 |
| Trevase Limited | Wholesale & retail | 1991 |
| Triangle Lift Services Limited | Manufacturing | 1996 |
| Triangle Networks Ltd | Information & communication | 2004 |
| Trim Street Business Centre Limited | Real estate | 2019 |
| Tripod Home Limited | Wholesale & retail | 2000 |
| Trusted Clothing Ltd | Wholesale & retail | 2023 |
| TSL Autoworks & Diagnostics Ltd | Wholesale & retail | 2021 |
| Tuckmill (Clevedon) Management Company Limited | Households | 1982 |
| Tudball (Opticians) Limited | Wholesale & retail | 1986 |
| Tudor Lodge (Clevedon) Management Company Limited | Households | 2006 |
| Tulip Naturally Ltd | Professional & scientific | 2026 |
| Turner International Bidco Limited | Professional & scientific | 2018 |
| Turner International Midco 2 Limited | Professional & scientific | 2018 |
| Turner International Midco Limited | Professional & scientific | 2018 |
| Turner International Topco Limited | Professional & scientific | 2018 |
| Tvbg Limited | Professional & scientific | 2015 |
| Tweed Road Motors Limited | Wholesale & retail | 2008 |
| TWELVE08 Ltd | Other services | 2026 |
| Twentytwo Landscapes Ltd | Administrative & support | 2026 |
| TWL Groundworks Limited | Construction | 2018 |
| Tynevermoor Training & Boarding Limited | Other services | 2021 |
| Type 1 Developments Limited | Construction | 2016 |
| UK Curry Connect Limited | Information & communication | 2016 |
| Ultra Light & Sound Limited | Other services | 2009 |
| Underwood Park Management Company Limited | Households | 1976 |
| Uppal Property Management Limited | Real estate | 2008 |
| Upstream Subsea Limited | Professional & scientific | 1993 |
| Urban Flooring Services Limited | Construction | 2012 |
| Urban Styling Limited | Other services | 2016 |
| Urch Properties Ltd | Real estate | 2009 |
| Ursu Courier Ltd | Transport & logistics | 2018 |
| USE Growth Ltd | Professional & scientific | 2018 |
| Usupplements Ltd | Wholesale & retail | 2025 |
| V Bellamy Educational Psychology Ltd | Education | 2024 |
| Vailes Property Management Ltd | Construction | 2025 |
| Valcasa Properties Ltd | Construction | 2023 |
| Valley Park (ST Annes) Management Company Limited | Households | 1996 |
| Valor Studio Ltd | Information & communication | 2025 |
| Vanessa Lyle Dyslexia Tutor Limited | Education | 2025 |
| Vanguard Enforcement SW Limited | Administrative & support | 2024 |
| Vasari Technology Ltd | Manufacturing | 2002 |
| Vdubresto Limited | Wholesale & retail | 2021 |
| Venetian Properties Limited | Real estate | 2004 |
| Venue JP Ltd | Hospitality | 2026 |
| Veridio AI Limited | Information & communication | 2025 |
| Vexamus Limited | Financial services | 2001 |
| Victoria Court (Redfield) Management Company Limited | Households | 1988 |
| Victoria Recovery Limited | Wholesale & retail | 2002 |
| Viking Restorations Limited | Construction | 2014 |
| Village Gate (Swindon) Management Company Limited | Households | 1999 |
| Vines Salon Ltd | Other services | 2025 |