| Trinity Express Ltd | Wholesale & retail | 2012 |
| Trinity Express Property Ltd | Real estate | 2023 |
| Trio Equipment UK Ltd | Financial services | 2005 |
| Triple a Private Limited | Manufacturing | 2019 |
| Triple H Contracts & Hire Ltd | Administrative & support | 2009 |
| Triplenvee Renovations Ltd | Construction | 2023 |
| Tritex Games Limited | Wholesale & retail | 2012 |
| TRO (Long Whatton) Limited | Real estate | 2025 |
| Trope Media Limited | Information & communication | 2021 |
| Trowbridge Developments Limited | Real estate | 2007 |
| TRP Solutions Ltd | Construction | 2016 |
| TRS Manufacturing Ltd | Manufacturing | 2018 |
| Trubuild Construction Ltd | Construction | 2020 |
| Trubuild Homes Ltd | Construction | 2019 |
| Trubuild Properties Ltd | Construction | 2020 |
| Trudie Mcguinness Coaching & Training Limited | Other services | 2025 |
| True Form Beauty Ltd | Other services | 2025 |
| True Legacy Sports Marketing Ltd | Professional & scientific | 2022 |
| True Spark Software Limited | Information & communication | 2025 |
| Truegarden Co., Ltd. | Extraterritorial | 2014 |
| Trussell Properties Limited | Real estate | 2010 |
| Trusted Analytics Ltd | Information & communication | 2017 |
| Trusted Loyalty Partners Limited | Other services | 2014 |
| Trusted Mechanical Installations Ltd | Construction | 2026 |
| TRW Legal Consulting Ltd | Professional & scientific | 2026 |
| Tryora Ltd | Information & communication | 2014 |
| Tsec Engineering Consultancy Ltd. | Professional & scientific | 2017 |
| Tsevp (Ribble) Limited | Real estate | 2019 |
| TSG Flooring Specialist Ltd | Construction | 2025 |
| TSM Signalling Ltd | Construction | 2025 |
| Tstech International Ltd | Wholesale & retail | 2024 |
| Ttoot Ltd | Construction | 2026 |
| Tuchuang Trading Co., Limited | Manufacturing | 2025 |
| Tucked Away Ltd | Hospitality | 2021 |
| TUI International Business Co., Ltd | Administrative & support | 2022 |
| Tula Medical Negligence Experts Limited | Professional & scientific | 2020 |
| Tuliso Ltd | Manufacturing | 2023 |
| Tuneless Minds Ltd | Arts & recreation | 2018 |
| Tunnicliffe Investments Limited | Hospitality | 1988 |
| Tunstall Library Developments Limited | Construction | 2022 |
| Tunstall Library UK Limited | Construction | 2013 |
| Tuowei Limited | Wholesale & retail | 2025 |
| Tuqi Global Super Trading Co., Ltd | Wholesale & retail | 2026 |
| Turbomaster Engineering Ltd | Wholesale & retail | 2024 |
| Turbowuchs Ltd | Wholesale & retail | 2025 |
| Turner Inns Ltd | Hospitality | 2016 |
| Turtle Shell Properties Ltd | Real estate | 2022 |
| Turtles Nurseries (Stafford) Limited | Health & social care | 2002 |
| Tusk Inc Ltd | Financial services | 2012 |
| Tuyton Ltd | Wholesale & retail | 2023 |
| TVG Investments Limited | Real estate | 2018 |
| TVT International Limited | Transport & logistics | 2018 |
| TWA Ltd | Wholesale & retail | 2025 |
| TWC Holdings Limited | Manufacturing | 2003 |
| Twentyseven Accounting Ltd | Professional & scientific | 2018 |
| TWF Developments Limited | Extraterritorial | 2023 |
| Twilight Inns Limited | Hospitality | 2020 |
| Twilltac Limited | Information & communication | 2024 |
| Twin Key Properties Limited | Real estate | 2025 |
| Twist Brew Ltd | Wholesale & retail | 2024 |
| TY Gwyn Cottage Ltd | Real estate | 2021 |
| Tylecote Properties Ltd | Real estate | 2007 |
| Tyre Deals Stafford Ltd | Wholesale & retail | 2024 |
| Tyretracks (Eccleshall) Ltd | Wholesale & retail | 2002 |
| Tyretracks Holdings Ltd | Financial services | 2023 |
| TZD Bars Ltd | Hospitality | 2023 |
| U Beautie Aesthetics & Tattoos Ltd | Arts & recreation | 2025 |
| Uarrow Limited | Information & communication | 2024 |
| UBF (Consulting) Limited | Professional & scientific | 2019 |
| Ubuntu Bethu Compassion Capital Ltd | Professional & scientific | 2026 |
| UK ABC Petrochemical Limited | Extraterritorial | 2019 |
| UK Acoli Plant Nutrition Co., Ltd. | Manufacturing | 2023 |
| UK Ageluo Morgan Huaxue Ltd | Agriculture & fishing | 2024 |
| UK Agride Ltd | Manufacturing | 2022 |
| UK Alpha Crop Health Alliance Limited | Mining & quarrying | 2021 |
| UK Ambition Blockchain Group Limited | Arts & recreation | 2021 |
| UK Ansel Pharmaceutical Co., Ltd. | Manufacturing | 2024 |
| UK Astrazeneca Anti-Aging Research Co., Ltd | Extraterritorial | 2014 |
| UK Bamore Limited | Wholesale & retail | 2024 |
| UK Bentley Investment Group Limited | Wholesale & retail | 2025 |
| UK Brancacci Paint Color Limited | Extraterritorial | 2019 |
| UK Bricks and Mortar Limited | Real estate | 2018 |
| UK Brilliant Technology Co., Ltd. | Wholesale & retail | 2024 |
| UK Cain International Co., Ltd. | Manufacturing | 2023 |
| UK Cambridge Hamerton Biotechnology Co., Ltd | Manufacturing | 2025 |
| UK Commercial Roofing Limited | Construction | 2019 |
| UK CY Group Limited | Information & communication | 2021 |
| UK Dekesi Co., Ltd | Manufacturing | 2023 |
| UK Dipu Co., Ltd | Manufacturing | 2023 |
| UK Drive Systems Limited | Manufacturing | 2010 |
| UK Enoone Power Industry Shares Co., Ltd. | Extraterritorial | 2020 |
| UK Eterno IMP. & EXP. Co. Ltd | Wholesale & retail | 2024 |
| UK Evert Trading Co., Limited | Wholesale & retail | 2025 |
| UK Exwell Exproof Eletric Ltd | Manufacturing | 2023 |
| UK Fried Chicken MCR Limited | Hospitality | 2019 |
| UK FUN Baby's FUN Culture Co., Ltd | Extraterritorial | 2017 |
| UK Gbyte Technology Co., Limited | Information & communication | 2024 |
| UK Gemmes Chemical Group Co., Ltd. | Manufacturing | 2024 |
| UK Giants Feier International Home Furnishing Group Ltd | Manufacturing | 2024 |
| UK Glitter Technology Limited | Manufacturing | 2022 |