| Topaz Testing Limited | Information & communication | 2024 |
| Topdem Limited | Construction | 1998 |
| Torden Consulting Ltd | Other services | 2021 |
| Toriarts Studios Limited | Arts & recreation | 2026 |
| Tornus Solution Ltd | Other services | 2018 |
| Torque Motors (Shropshire) Ltd | Wholesale & retail | 2018 |
| Torque Tyres Limited | Wholesale & retail | 2015 |
| Torque Wheels Ltd | Wholesale & retail | 2012 |
| Tortoise Day Nursery Limited | Health & social care | 2025 |
| Torton Limited | Financial services | 2021 |
| Torus Automation Limited | Manufacturing | 2014 |
| Torus Measurement Systems Limited | Manufacturing | 1999 |
| Torus Technology Group Limited | Professional & scientific | 2013 |
| TOT Time @ Lower Drayton Farm Ltd | Education | 2025 |
| TOT Time UK Limited | Education | 2022 |
| Total Akcess Limited | Mining & quarrying | 2017 |
| Total Ascent Limited | Professional & scientific | 2013 |
| Total Bodyshop Solutions (UK) Limited | Professional & scientific | 2012 |
| Total Cloud AI Limited | Information & communication | 2023 |
| Total Construction & Scaffolding Ltd | Construction | 2019 |
| Total Contract Scaffolding Ltd | Construction | 2019 |
| Total Kombat Ltd | Arts & recreation | 2024 |
| Total Powered Access Ltd | Construction | 2019 |
| Total Room Solutions Limited | Construction | 2025 |
| Total Security Services (Midlands) Ltd | Administrative & support | 2010 |
| Toucan Electrical Contractors Ltd | Energy | 2024 |
| Touch Sky Investment Group Limited | Financial services | 2025 |
| Towal Limited | Health & social care | 2024 |
| Towerchase Consultancy Limited | Professional & scientific | 2019 |
| Towers Project Management Ltd | Real estate | 2009 |
| Toyato Ltd | Other services | 2018 |
| TP Manufacturing Limited | Manufacturing | 1999 |
| TP Travel Ltd | Transport & logistics | 2018 |
| TP Welding & Fabrication Limited | Other services | 2023 |
| TPA Computing Ltd | Information & communication | 2024 |
| TPJ Mechanical Design Ltd | Professional & scientific | 2026 |
| TPR Estates Limited | Real estate | 2025 |
| Tracker 999 Limited | Information & communication | 2023 |
| Tradcox Ltd | Wholesale & retail | 1999 |
| Trade Cooling Limited | Wholesale & retail | 2009 |
| Tradeline Market Ltd | Wholesale & retail | 2020 |
| Tradership Ltd | Wholesale & retail | 2018 |
| Tradestone Construction Limited | Construction | 2014 |
| Traditional Oak Framing Ltd | Construction | 2024 |
| Trafeks Ltd | Administrative & support | 2018 |
| Train Daley Limited | Arts & recreation | 2021 |
| Trainermaker Limited | Education | 2019 |
| Traket Ltd | Administrative & support | 2018 |
| Tranquil Care Solutions Ltd | Health & social care | 2024 |
| Tranquil Serenity Ltd | Other services | 2009 |
| Tranquillity and Nails Ltd | Other services | 2018 |
| Trans City Consulting Ltd | Real estate | 2023 |
| Transfinancial Services Limited | Wholesale & retail | 2001 |
| Transformcare Training & Development Ltd | Education | 2026 |
| Transicon Ltd. | Manufacturing | 1990 |
| Transitiv Technologies Limited | Information & communication | 2010 |
| Transmark Telford Ltd | Extraterritorial | 2016 |
| Transport SRL Ltd | Construction | 2022 |
| Tranter Lowe (Oakengates) Ltd | Professional & scientific | 2008 |
| Treadstone Granite & Quartz Ltd | Manufacturing | 2023 |
| Trellum Ltd | Information & communication | 2026 |
| Trench Business Ltd | Hospitality | 2016 |
| Trench Express Ltd | Wholesale & retail | 2025 |
| Trench Funeral Services Limited | Professional & scientific | 2013 |
| Trench Lock 24/7 Limited | Professional & scientific | 2002 |
| Trench Lock Land & Properties Ltd | Real estate | 2023 |
| Trench Lock Land & Property Ltd | Real estate | 2022 |
| Trench Lock Properties Limited | Real estate | 2016 |
| Trench Road Barber Ltd | Other services | 2026 |
| Trench Road Barber Shop Limited | Other services | 2025 |
| Trench Tots Neighbourhood Nursery Limited | Education | 2003 |
| Trendz Holdings Limited | Financial services | 2019 |
| Trent Landscapes Limited | Administrative & support | 2018 |
| Trevor Goddard Associates Ltd | Education | 2018 |
| Trhlive Ltd | Arts & recreation | 2025 |
| TRI Pave Construction Limited | Construction | 2014 |
| Trian Transport UK Limited | Extraterritorial | 2018 |
| Tribe Health Clubs Limited | Arts & recreation | 2015 |
| Tribe&Taste Telford Limited | Hospitality | 2026 |
| Tribio Ltd | Other services | 2020 |
| Tribull Formwork Services Ltd | Construction | 2025 |
| Trickster Innovation Limited | Professional & scientific | 2026 |
| Trident E&M Services Ltd | Construction | 2026 |
| Trigol Limited | Wholesale & retail | 2023 |
| Trimmatt Limited | Manufacturing | 2024 |
| Trinity Land & Property Ltd | Real estate | 2020 |
| Trioservices Ltd | Administrative & support | 2025 |
| Trioworld UK Ltd | Manufacturing | 1995 |
| Triple Clear Property Services Ltd | Administrative & support | 2020 |
| Triple Rock Marine Ltd | Administrative & support | 2013 |
| Triplo Group Holdings Limited | Financial services | 2024 |
| Tripta Group Limited | Financial services | 2024 |
| Tristol Ltd | Other services | 2019 |
| TRJ Betws Ltd | Real estate | 2022 |
| TRJ Llandudno Ltd | Real estate | 2022 |
| Trofense Ltd | Administrative & support | 2019 |
| Trogs Trucks Ltd | Transport & logistics | 2022 |
| Trojan Industries Limited | Manufacturing | 1983 |
| Trotfield (Ironbridge) Limited | Construction | 2002 |
| Trotfield Limited | Construction | 1988 |