| Tidy Think Ltd | Wholesale & retail | 2023 |
| Tidy Trading Ltd | Construction | 2014 |
| Tigris Group Ltd | Wholesale & retail | 2022 |
| Tillovision Ltd | Information & communication | 2013 |
| Timbertight Construction Ltd | Construction | 2020 |
| Timbertight Limited | Construction | 2017 |
| Titan Business Centres Ltd | Extraterritorial | 2017 |
| Titan Cranes Ltd | Administrative & support | 2025 |
| Titan Electrical (Leeds) Ltd | Construction | 2011 |
| Titan Serviced Offices Ltd | Extraterritorial | 2017 |
| Titus Property Investments Ltd | Real estate | 2026 |
| TN Restaurant Limited | Hospitality | 2022 |
| TOE Rags Truck Mats Ltd. | Extraterritorial | 2008 |
| TOM Patchett Ltd | Transport & logistics | 2026 |
| Tomlinson Group Holdings Limited | Financial services | 2022 |
| Top Gear (Yorkshire) Limited | Wholesale & retail | 2016 |
| Top Pounds and DIY Store Limited | Wholesale & retail | 2021 |
| Top Quality Home Cleaning Services Limited | Administrative & support | 2024 |
| Tordoff Transport Limited | Professional & scientific | 1952 |
| Torkard Carpentry & Joinery Ltd | Construction | 2019 |
| Total Food Concepts Limited | Wholesale & retail | 2024 |
| Total Renewable Solutions Limited | Construction | 2022 |
| Touch of Ginger Property Solutions Limited | Real estate | 2016 |
| Towards Belonging Ltd | Professional & scientific | 2023 |
| Tpjn Limited | Professional & scientific | 2004 |
| Trade Hydro Limited | Administrative & support | 2010 |
| Transglobal Capital Ltd | Other services | 2020 |
| Transglobal Commodity & Trade Ltd | Other services | 2019 |
| Transglobal International Holdings Ltd | Other services | 2019 |
| Transglobal OIL & GAS Ltd | Other services | 2019 |
| Transglobal Overseas Trade Ltd | Other services | 2019 |
| Transglobal Petroleum Ltd | Other services | 2019 |
| Transglobal Trade Solutions Ltd | Financial services | 2021 |
| Transglobal Ventures Ltd | Other services | 2020 |
| Travel Caledonian Limited | Transport & logistics | 2021 |
| Travelbug by Adele Limited | Administrative & support | 2024 |
| Tree Planting UK Ltd | Agriculture & fishing | 2023 |
| Trehan Properties Limited | Real estate | 2012 |
| Tribus Holdings Group Limited | Information & communication | 2023 |
| Tribus Digital Limited | Information & communication | 2016 |
| Trigger Scaffolding Ltd | Construction | 2013 |
| Trinity Garage Company Limited | Extraterritorial | 1912 |
| Triple 4 Engineering Limited | Wholesale & retail | 2021 |
| Triton Building Services Ltd | Construction | 2013 |
| Trovia Real Estates Ltd | Real estate | 2012 |
| Truckway Limited | Wholesale & retail | 2016 |
| True Group Corporation Ltd | Administrative & support | 2021 |
| True Security Solutions Ltd | Administrative & support | 2021 |
| True Staffing Services Ltd | Administrative & support | 2022 |
| True Staffing Solutions Ltd | Administrative & support | 2018 |
| True Talent Theatre School Limited | Administrative & support | 2025 |
| Trusted Financial Planning Limited | Financial services | 2014 |
| Truth Nightclub Ltd | Hospitality | 2019 |
| TSA Service Limited | Administrative & support | 2011 |
| Tsuk (Leeds) Ltd | Wholesale & retail | 2021 |
| Tvam Ltd | Information & communication | 2023 |
| Twenty 51 Limited | Administrative & support | 2010 |
| Twenty Eight Ltd | Information & communication | 2024 |
| Twenty One Investment Holdings Limited | Financial services | 2020 |
| Twenty Twenty Digital Ltd | Information & communication | 2023 |
| Twins Barber 2 Ltd | Other services | 2025 |
| Two Rivers Commercial Property Ltd | Real estate | 2017 |
| TXM Sports Limited | Arts & recreation | 2016 |
| Tyai Limited | Construction | 2024 |
| UA Management Ltd | Health & social care | 2023 |
| Udon Properties Ltd | Real estate | 2020 |
| UFL Logistics Limited | Transport & logistics | 2008 |
| UK Inertia Business & Consulting Limited | Information & communication | 2022 |
| UK Jordan B 3D Limited | Manufacturing | 2026 |
| UK Unite CIC | Education | 2026 |
| Unique Fundraising Limited | Administrative & support | 2010 |
| Unique U Retail Clothing Ltd | Wholesale & retail | 2024 |
| Urban Electrical Contractors and Solutions Ltd | Construction | 2018 |
| Urban Paws Groom Room Limited | Wholesale & retail | 2020 |
| UTC Overseas PVT Limited | Transport & logistics | 2002 |
| V1 Energy Ltd | Professional & scientific | 2026 |
| V11 Ltd | Professional & scientific | 2024 |
| VA Prime Property Ltd | Real estate | 2026 |
| Valisma Consulting Group Limited | Administrative & support | 2023 |
| Valisma Property Investment Limited | Real estate | 2024 |
| Vamoose Camper Conversions Limited | Wholesale & retail | 2009 |
| Vamoose Elevating Roofs Limited | Extraterritorial | 2009 |
| VED Retail Limited | Wholesale & retail | 2024 |
| Vehtek Ltd | Wholesale & retail | 2025 |
| Verona Cleckheaton Ltd | Hospitality | 2025 |
| Verseb Ltd | Hospitality | 2026 |
| Victoria Quarter Group Ltd | Hospitality | 2017 |
| Video Tips Limited | Education | 2026 |
| Vintage Wood Company Limited | Manufacturing | 2016 |
| Visco Property Ltd | Real estate | 2023 |
| Viscount Environmental Limited | Other services | 1992 |
| Vision Executives International Ltd | Administrative & support | 2021 |
| Vision Executives Ltd | Administrative & support | 2021 |
| Vital Works Ltd | Construction | 2025 |
| Vivaria Properties Limited | Real estate | 2019 |
| VN Real Estate Limited | Real estate | 2021 |
| Vorlon Consultancy Limited | Other services | 2017 |
| VOX Alpha Ltd | Professional & scientific | 2020 |
| VOX Energy Developments Limited | Professional & scientific | 2015 |
| VOX Energy Limited | Professional & scientific | 2013 |