| Tigola UK Ltd | Transport & logistics | 2025 |
| Tigre Eyes Limited | Hospitality | 2018 |
| Tigre Project Services Limited | Professional & scientific | 2016 |
| Tigre Technologies Limited | Professional & scientific | 2019 |
| Tijara Services Global Ltd | Financial services | 2021 |
| Tijarix Limited | Wholesale & retail | 2026 |
| Tiku Construction Homes Limited | Construction | 2015 |
| Tila Arts Limited | Arts & recreation | 2026 |
| Tila Capital Limited | Real estate | 2024 |
| Tila Farming Limited | Agriculture & fishing | 2025 |
| Tilawa 1942 Heritage Productions Ltd | Information & communication | 2024 |
| Tile and Plumbing Services (T.A.P.S) Limited | Water & waste | 2016 |
| Tile MAN Limited | Wholesale & retail | 2015 |
| Tile One Limited | Construction | 2025 |
| Tile Range Limited | Administrative & support | 2020 |
| Tile Theory Ltd | Manufacturing | 2026 |
| Tiles and Baths Ltd | Wholesale & retail | 2021 |
| Tiles N Baths Ltd | Wholesale & retail | 2008 |
| Tilia Pro Ltd | Administrative & support | 2022 |
| Till Roll Corp Ltd | Wholesale & retail | 2025 |
| Tillworth Haulage Ltd | Transport & logistics | 2014 |
| Tilly-Mae's Limited | Hospitality | 2023 |
| TIM Adams Architects Limited | Professional & scientific | 2017 |
| TIM Barradell Flooring Ltd | Wholesale & retail | 2023 |
| TIM Brown Marketing Services Limited | Wholesale & retail | 2001 |
| TIM Dalton Counselling Ltd | Health & social care | 2015 |
| TIM Hearn Consulting Ltd | Professional & scientific | 2020 |
| TIM Hutchful Limited | Health & social care | 2007 |
| TIM Johnson Dentistry Limited | Health & social care | 2006 |
| TIM Johnson Property Limited | Real estate | 2017 |
| TIM King Farriery Ltd | Other services | 2017 |
| TIM Moger Consulting Ltd | Information & communication | 2023 |
| TIM Polito Building and Renovation Ltd | Construction | 2011 |
| Time 2 Go Recruitment Limited | Financial services | 2025 |
| Time Cocktail Bar Limited | Hospitality | 2017 |
| Time for Breakfast Ltd | Hospitality | 2022 |
| Time Saver Delivery Ltd | Transport & logistics | 2017 |
| Time Savers Logistics Ltd | Transport & logistics | 2020 |
| TIME2HOLIDAY Ltd | Administrative & support | 2023 |
| Timeless Capital Ltd | Real estate | 2021 |
| Timeless Events Ltd | Extraterritorial | 2017 |
| Timeless Tech Limited | Information & communication | 2025 |
| Timelesscore Ltd | Real estate | 2025 |
| Timepiece Leicester Ltd | Wholesale & retail | 2019 |
| Timing Belts R US Limited | Wholesale & retail | 2025 |
| Timo Restaurant Ltd | Hospitality | 2008 |
| Timtop Autos Ltd | Wholesale & retail | 2024 |
| TIN House Studio YT Ltd | Professional & scientific | 2021 |
| Tina-Uk Ltd | Wholesale & retail | 2022 |
| Tinacia Creatives Ltd | Manufacturing | 2021 |
| Tinashe Healthcare Services Ltd | Health & social care | 2020 |
| Tinashe Limited | Health & social care | 2013 |
| Tindall Hobson Ltd | Wholesale & retail | 2024 |
| Tindovestry Ltd | Health & social care | 2019 |
| Tindyc Limited | Other services | 2016 |
| Tinglebug Farm Ltd | Wholesale & retail | 2022 |
| Tinling-Hayes Ltd | Professional & scientific | 2025 |
| Tino Solutions Ltd | Health & social care | 2017 |
| Tinro Ltd | Transport & logistics | 2025 |
| Tinsley Vital Ltd | Wholesale & retail | 2016 |
| Tint Customs Ltd | Wholesale & retail | 2018 |
| Tintisha Technologies (UK) Limited | Information & communication | 2001 |
| Tintutatun Ltd | Other services | 2016 |
| Tipi and Horse Box Bars Ltd | Hospitality | 2020 |
| Tipperleyhill Limited | Arts & recreation | 2024 |
| Tippetts & Brooks Developments Limited | Construction | 2010 |
| Tippetts Trimmings and Smallwares Limited | Wholesale & retail | 1980 |
| Tips Consultancy Ltd | Professional & scientific | 2023 |
| Tipsytales Ltd | Wholesale & retail | 2026 |
| Tiptonville Value Ltd | Transport & logistics | 2014 |
| Tiptop Deals LLP | | 2021 |
| Tiranga Restaurant Limited | Hospitality | 2014 |
| TISHO77 Ltd | Transport & logistics | 2024 |
| Tissington Logistics Ltd | Transport & logistics | 2014 |
| Titan Capital Global Ltd | Financial services | 2025 |
| Titan Clothing Limited | Manufacturing | 2003 |
| Titan Club Limited | Wholesale & retail | 2026 |
| Titan Forge Materials Ltd | Construction | 2026 |
| Titan Grid Ltd | Wholesale & retail | 2026 |
| Titan Leicester Ltd | Real estate | 2024 |
| Titan Procurement International Ltd | Wholesale & retail | 2025 |
| Titan Services Limited | Wholesale & retail | 2020 |
| Titan Sports Ventures Ltd | Wholesale & retail | 2025 |
| Titan Thermal Limited | Construction | 2024 |
| Titan Trommels Limited | Extraterritorial | 2007 |
| Titanium ABA Ltd | Transport & logistics | 2021 |
| Titanium Financial Services Ltd | Financial services | 2015 |
| Titanium Vault Holdings Limited | Financial services | 2025 |
| Tithe ST Auto Ltd | Wholesale & retail | 2024 |
| Tividale Estates Limited | Real estate | 2013 |
| Tiya Lettings Ltd | Real estate | 2025 |
| Tiyana Limited | Real estate | 2007 |
| Tizmu Ltd | Real estate | 2021 |
| TJ Building and Electrical Limited | Construction | 2025 |
| TJ Foods Leics Ltd | Hospitality | 2021 |
| TJ Fowler Art Ltd | Arts & recreation | 2023 |
| TJ Kania Ltd | Wholesale & retail | 2017 |
| TJ M Motors Limited | Wholesale & retail | 2025 |
| Tj's Grills Ltd | Hospitality | 2023 |
| Tj's Import Export Ltd | Wholesale & retail | 2023 |