| Tezlon Ltd | Wholesale & retail | 2024 |
| TF (Leicester) Limited | Hospitality | 2020 |
| TF Academy Ltd | Education | 2021 |
| TF Care Solutions Limited | Health & social care | 2026 |
| TF Cars Limited | Wholesale & retail | 2007 |
| Tface Records Limited | Information & communication | 2024 |
| TFB Gym Limited | Arts & recreation | 2012 |
| TFC Trans Limited | Transport & logistics | 2025 |
| Tfc&C Limited | Wholesale & retail | 2021 |
| TFD Solutions Ltd. | Information & communication | 2017 |
| Tfec Ltd | Education | 2016 |
| TFG Studios Ltd | Information & communication | 2019 |
| Tfjb Limited | Professional & scientific | 2021 |
| TFM One Property Company Limited | Hospitality | 2025 |
| TFP Solutions Ltd | Manufacturing | 2019 |
| TG Builders Consortium Ltd | Construction | 2023 |
| TG Dental Care Limited | Health & social care | 2011 |
| TG Financials Ltd | Professional & scientific | 2019 |
| TG Global Investments Limited | Manufacturing | 2012 |
| Tg's Dental Suite Limited | Health & social care | 2011 |
| TGB Welding Services Limited | Manufacturing | 2010 |
| Tghez Ltd | Information & communication | 2022 |
| TGL Media Ltd | Administrative & support | 2017 |
| Tgold New Homes Limited | Construction | 2018 |
| TGR Horticulture Ltd | Agriculture & fishing | 2026 |
| TGS Projects Ltd | Construction | 2020 |
| Tgthr Training Limited | Arts & recreation | 2025 |
| TGW Distribution Ltd | Wholesale & retail | 2011 |
| TH Sports & Entertainment Limited | Information & communication | 2025 |
| Thaaliwala Ltd | Hospitality | 2024 |
| Thacker & Co Estates Ltd | Real estate | 2025 |
| Thadha Group Limited | Financial services | 2025 |
| Thadha Holdings Limited | Financial services | 2025 |
| Thadha Investments Limited | Real estate | 2015 |
| Thadha Properties LLP | | 2023 |
| Thai E-Sarn Take Away Ltd | Hospitality | 2014 |
| Thai House Services Ltd | Health & social care | 2024 |
| Thai Kitchen Leicester Ltd | Hospitality | 2019 |
| Thai Lanna Inn & Spa Ltd | Hospitality | 2025 |
| Thai Lanna Massage Ltd | Health & social care | 2025 |
| Thai Lanna Restaurant Ltd | Hospitality | 2025 |
| Thai Massage Spa Ltd | Other services | 2023 |
| Thai Restaurant Ltd | Hospitality | 2024 |
| Thai Therapy Glenfield Ltd | Health & social care | 2024 |
| Thainiyom Import Ltd | Wholesale & retail | 2019 |
| Thaitham Ltd | Hospitality | 2025 |
| Thaker Futuretech PVT Ltd | Information & communication | 2025 |
| Thaker Investments Ltd | Real estate | 2019 |
| Thakers Asset Management Ltd | Real estate | 2020 |
| Thakkar Holdings Limited | Real estate | 2019 |
| Thakor Estates Ltd | Real estate | 2020 |
| Thakur Properties & Construction Ltd | Construction | 2026 |
| Thales Investments Ltd | Financial services | 2023 |
| Thalion AI Limited | Information & communication | 2026 |
| Thalir UK Ltd | Manufacturing | 2024 |
| Thaliwal & Co Limited | Professional & scientific | 2014 |
| Thaliwal Consulting Limited | Professional & scientific | 2016 |
| Thamarakkattu Limited | Real estate | 2025 |
| Thames Decorations & Tiling Limited | Construction | 2026 |
| Thames Street (Leicester) LLP | | 2018 |
| Thanasi Estates Limited | Real estate | 2019 |
| Thanasi Stays Ltd | Real estate | 2026 |
| Thanawala and Co Ltd | Health & social care | 2018 |
| Thando Investments Limited | Health & social care | 2016 |
| Thanh NAM PHO Ltd | Hospitality | 2024 |
| Thanu Local Express Ltd | Wholesale & retail | 2026 |
| Thanwise Limited | Information & communication | 2026 |
| Thapa Electrics Limited | Construction | 2023 |
| Thaqlain Limited | Education | 2020 |
| Tharr Foods Ltd | Hospitality | 2024 |
| Tharwa Holdings Limited | Real estate | 2026 |
| Thaya Retailer Ltd | Wholesale & retail | 2022 |
| Thayanithy Ltd | Wholesale & retail | 2023 |
| THE 1839 Company Ltd | Manufacturing | 2017 |
| THE 2FUNKY Lounge Limited | Hospitality | 2018 |
| THE 3D Measurement Company Limited | Professional & scientific | 2013 |
| THE 3RCO Consulting Group Ltd | Professional & scientific | 2024 |
| THE 72 Bar Restaurant Grill Ltd | Hospitality | 2024 |
| THE 9JA Fayre Ltd | Education | 2024 |
| THE Abaya Company LDN Ltd | Wholesale & retail | 2020 |
| THE Abbey Lane Stores Ltd | Wholesale & retail | 2010 |
| THE Abeke Brand Limited | Professional & scientific | 2025 |
| THE Accounting Office Ltd | Professional & scientific | 2015 |
| THE Acorns Leicester Ltd | Health & social care | 2022 |
| THE Addict Dance Academy Ltd | Arts & recreation | 2012 |
| THE Addies Bar Limited | Hospitality | 2012 |
| THE Advantage Enterprise & Innovation Fund | | 2005 |
| THE AI Training Centre Ltd | Education | 2025 |
| THE Air Company Nationwide Limited | Energy | 2015 |
| THE Airborne Food Drink and Motor Co Ltd | Wholesale & retail | 2021 |
| THE Albert D Ltd | Health & social care | 2019 |
| THE Alchemy Carta Limited | Manufacturing | 1980 |
| THE Algarve Guru Limited | Arts & recreation | 2016 |
| THE Algerian Tea Company Limited | Manufacturing | 2026 |
| THE Alpha Consultancy Group Limited | Professional & scientific | 2010 |
| THE Alpha Group Property Holding & Development Ltd | Construction | 2022 |
| THE Alternative Divorce Company Limited | Other services | 2023 |
| THE Amar Singh Company Ltd | Wholesale & retail | 2020 |
| THE Anodising Company Limited | Professional & scientific | 2001 |
| THE Apostle Legal Consultancy Limited | Professional & scientific | 2012 |