| Teleios Recruitment Limited | Administrative & support | 2018 |
| Telford Consulting Engineers Limited | Administrative & support | 2009 |
| Telford Housing Company Limited | Other services | 1993 |
| Telpoint Consultancy Limited | Professional & scientific | 2018 |
| Telrandhe Lettings Ltd | Real estate | 2023 |
| Tembo Enterprise Limited | Other services | 2016 |
| Teme Valley Investments Limited | Professional & scientific | 1984 |
| Temidee Ltd | Wholesale & retail | 2022 |
| Temp a Stor Limited | Extraterritorial | 2008 |
| Temp a Store Limited | Extraterritorial | 2008 |
| Temp-A-Floor Limited | Professional & scientific | 1990 |
| Temple Gold Property Ltd | Real estate | 2025 |
| Temptations Desserts Limited | Hospitality | 2019 |
| TEN Years Hard Labour Ltd | Information & communication | 2023 |
| Tenant Choice Derby Ltd | Real estate | 2021 |
| Tenbroeke Company Limited | Professional & scientific | 2009 |
| Tenbroeke Engineering Company Limited | Professional & scientific | 2019 |
| Tenbroeke M Consulting Limited | Professional & scientific | 2024 |
| Tenik Property Limited | Real estate | 2016 |
| Tennessee Compliance & PPM Ltd | Administrative & support | 2025 |
| Tentamus Pharma (UK) Limited | Professional & scientific | 2004 |
| Tentcora Limited | Real estate | 2002 |
| Tentessa Coaching and Training Ltd | Information & communication | 2025 |
| Tentmeals Ltd | Manufacturing | 2015 |
| Teqt Studio Ltd | Professional & scientific | 2021 |
| Tera 13 PVT Ltd | Real estate | 2022 |
| Terminal One O One Limited | Professional & scientific | 2025 |
| Terra Nova Properties (Midlands) Limited | Real estate | 2018 |
| Terra Trading Limited | Wholesale & retail | 2017 |
| Terracanopy Ltd | Agriculture & fishing | 2026 |
| Terraroot Ltd | Agriculture & fishing | 2026 |
| Terratrip (UK) Limited | Manufacturing | 1987 |
| Terrence Doak Associates Limited | Real estate | 2007 |
| Terriswood Limited | Professional & scientific | 1986 |
| Terry Graham Photography Ltd | Professional & scientific | 2021 |
| Terry Malpass Associates Limited | Professional & scientific | 2011 |
| TES Community CIC | Education | 2024 |
| Tessa Rigby Ltd | Health & social care | 2025 |
| Test Drive Motors Limited | Wholesale & retail | 2024 |
| Test Enterprise Ltd | Wholesale & retail | 2023 |
| TEST1 Ltd | Manufacturing | 2005 |
| Tetley 74 Ltd | Transport & logistics | 2020 |
| Tetley Fine Art Ltd | Wholesale & retail | 2017 |
| TFJ Consulting Ltd | Transport & logistics | 2005 |
| Tfma Limited | Administrative & support | 2015 |
| TFZ Trading Limited | Real estate | 2023 |
| TG Derby Ltd | Wholesale & retail | 2024 |
| TG Real Estate Investments Limited | Real estate | 2026 |
| Tgdi Ltd | Administrative & support | 2019 |
| TGF Construction Ltd | Construction | 2023 |
| TGH Heating Ltd | Construction | 2024 |
| TH Cooling Solutions Limited | Manufacturing | 2020 |
| TH Psychotherapy Services Ltd | Health & social care | 2013 |
| Thaagency Ltd | Professional & scientific | 2026 |
| Thacker Engineering Limited | Construction | 2013 |
| Thacker Properties Limited | Real estate | 2019 |
| Thai Aroma Therapy Limited | Other services | 2025 |
| Thaicorp Ltd | Financial services | 2020 |
| Thakur Real Estate Solutions Ltd | Real estate | 2025 |
| Thalos Care Ltd | Health & social care | 2021 |
| Thamel Bar Limited | Wholesale & retail | 2025 |
| Thamel Investment Limited | Real estate | 2025 |
| Thandi Holdings Ltd | Real estate | 2025 |
| Thandi Property Ltd | Real estate | 2014 |
| Thandi Tibshelf Ltd | Real estate | 2025 |
| Thanos Ltd | Wholesale & retail | 2025 |
| Tharmi Food and Wine Limited | Wholesale & retail | 2024 |
| That DBA Company Ltd | Information & communication | 2013 |
| That Garage Door Company Ltd | Construction | 2023 |
| THE 324 Consultancy Ltd | Professional & scientific | 2019 |
| THE 4X4 Centre Derby Limited | Wholesale & retail | 2025 |
| THE 9JA Dream Ltd | Wholesale & retail | 2026 |
| THE a Team Property Ltd | Real estate | 2021 |
| THE Aacajudo Limited | Health & social care | 2023 |
| THE Accountancy Roome Ltd | Professional & scientific | 2022 |
| THE Acorn School Holdings Limited | Real estate | 1993 |
| THE Aerian Ltd | Professional & scientific | 2025 |
| THE Aesthetics Room at Earls and Squires Ltd | Other services | 2022 |
| THE Afro Food Box Limited | Wholesale & retail | 2025 |
| THE Afsar Limited | Transport & logistics | 2025 |
| THE Alphabet Gift Shop (Holdings) Limited | Financial services | 2019 |
| THE Alphabet Gift Shop (Property) Limited | Real estate | 2019 |
| THE Alphabet Gift Shop Ltd | Manufacturing | 2010 |
| THE Alpine Pizza Co Ltd | Hospitality | 2020 |
| THE Apple Tree Assets Ltd. | Real estate | 2024 |
| THE Apple Tree Giftshop and Teahouse Limited | Hospitality | 2014 |
| THE Applewood Regency Limited | Hospitality | 2023 |
| THE Avenue at City Fields Management Company Limited | Households | 2023 |
| THE B'S Knees Ltd | Hospitality | 2025 |
| THE Baby Deltic Project Ltd | Manufacturing | 2024 |
| THE Baby Sensory Box Company Limited | Wholesale & retail | 2018 |
| THE Baking School Limited | Hospitality | 2025 |
| THE Bar and Kettle Limited | Arts & recreation | 2023 |
| THE Bargain Wardrobe Ltd | Wholesale & retail | 2023 |
| THE Barrel & Bite Ltd | Hospitality | 2025 |
| THE Bear's Club Ltd | Wholesale & retail | 2021 |
| THE Beeches (Allestree) RMC Limited | Households | 2024 |
| THE Beeches (Bracklesham) Residents Management Company Limited | Households | 2018 |
| THE Berry Group U.K. Limited | Financial services | 2021 |
| THE Best Grab and Go Limited | Wholesale & retail | 2025 |