| Tapten Accounting Ltd | Professional & scientific | 2024 |
| Tapton Crookes Ltd | Wholesale & retail | 2024 |
| Tara Money Travel Ltd | Administrative & support | 2024 |
| Tara-Tara Ltd | Real estate | 2020 |
| Taraj Palace Limited | Hospitality | 2025 |
| Taram Limited | Hospitality | 2024 |
| Taran Pharma (Europe) Ltd | Professional & scientific | 2017 |
| Taran's Transport Ltd | Transport & logistics | 2008 |
| Taranet Solutions Limited | Information & communication | 2017 |
| Tarapsya Limited | Hospitality | 2025 |
| Tarch Transport Ltd | Transport & logistics | 2018 |
| Tardis Properties Limited | Real estate | 2002 |
| Tarex Ltd | Transport & logistics | 2017 |
| Target Fitout Ltd | Construction | 2019 |
| Target Hygiene Services Limited | Other services | 2019 |
| Target Ielts Limited | Education | 2024 |
| Target Packaging Systems Limited | Manufacturing | 2002 |
| Target Pest Control & Hygiene Limited | Other services | 2003 |
| Target Studios Ltd | Professional & scientific | 2017 |
| Target Surveys Limited | Construction | 2011 |
| Target Technology Solutions Ltd | Information & communication | 2021 |
| Target Wholesale and Retail Company Limited | Wholesale & retail | 2025 |
| Tariq Brothers Limited | Real estate | 1987 |
| Tariro Business Limited | Health & social care | 2012 |
| Tarmo Leicester Limited | Real estate | 2025 |
| Tarnbrook Logistics Ltd | Transport & logistics | 2014 |
| Tarnside Logistics Ltd | Transport & logistics | 2014 |
| Tarpaulin Repair Company Limited | Manufacturing | 2015 |
| Tarraby Ltd | Transport & logistics | 2015 |
| Tarzan Cars and Tyres Limited | Wholesale & retail | 2024 |
| TAS Advertisment Ltd | Information & communication | 2026 |
| TAS Home Finance Ltd | Other services | 2006 |
| TAS Hub Ltd | Administrative & support | 1992 |
| Tasha Lets Ltd | Real estate | 2026 |
| Tasia Trans Ltd | Administrative & support | 2017 |
| Task Corporation Group Ltd | Financial services | 2024 |
| Task Corporation Holdings Limited | Financial services | 2017 |
| Task Corporation Limited | Manufacturing | 2001 |
| Task Freight International Limited | Transport & logistics | 2024 |
| Tasker Associates Ltd | Professional & scientific | 2019 |
| Taskhero Limited | Information & communication | 2023 |
| Tasneem Optometry Limited | Wholesale & retail | 2023 |
| Taste of Bengal Leicester Limited | Hospitality | 2021 |
| Taste of China (Leicester) Ltd | Hospitality | 2010 |
| Taste of Romanian Ltd | Wholesale & retail | 2021 |
| Taste of Spice Arnesby Ltd | Hospitality | 2025 |
| Taste of SRI Lanka by KS Ltd | Hospitality | 2025 |
| Taste of SRI Lanka Ltd | Hospitality | 2025 |
| Tasty Chicken FUN Ltd | Hospitality | 2023 |
| Tasty Foods & Drinks Ltd | Wholesale & retail | 2025 |
| Tasty Fountain Soda Ltd | Wholesale & retail | 2024 |
| Tasty Grill Ltd | Hospitality | 2026 |
| Tasty Joes Fastfood Limited | Hospitality | 2019 |
| Tasty Shawarma Leics Ltd | Hospitality | 2025 |
| Tastyland Chicken and Pizza Limited | Hospitality | 2026 |
| TAT Transport Ltd | Transport & logistics | 2024 |
| Tatam Care Service Ltd | Health & social care | 2022 |
| Tatawat Group UK Ltd | Hospitality | 2021 |
| Tatita Limited | Health & social care | 2022 |
| Tatoikunda Limited | Health & social care | 2008 |
| Tattock Ultimate Ltd | Transport & logistics | 2015 |
| Tatton Contracts Ltd | Construction | 2019 |
| Tattum Accountancy Limited | Professional & scientific | 2013 |
| Tattva Restaurant Limited | Hospitality | 2024 |
| Taura Logistics Ltd | Transport & logistics | 2024 |
| Taurex Freight Ltd | Wholesale & retail | 2026 |
| TAURPIO888 Limited | Real estate | 2021 |
| Taurus (UK) Limited | Health & social care | 2009 |
| Taurus Childcare Ltd | Health & social care | 2025 |
| Taurus Group Holdings Ltd | Professional & scientific | 2023 |
| Taurus Marketing Limited | | 2008 |
| Tavian Supported Living Ltd | Health & social care | 2026 |
| TAW Holdings (UK) Limited | Households | 2017 |
| Tawa Ltd | Hospitality | 2019 |
| Tawahawa Limited | Hospitality | 2025 |
| Tawfeeqtours Ltd | Administrative & support | 2023 |
| Tawheed Learning Ltd | Information & communication | 2025 |
| Tawstock Advantage Ltd | Transport & logistics | 2014 |
| Tax Advice Bureau Ltd | Administrative & support | 2020 |
| Tax Research Network Ltd | Professional & scientific | 2020 |
| Tax Solutions UK Ltd | Professional & scientific | 2000 |
| Tax Task UK Limited | Professional & scientific | 2004 |
| Taxar Enterprise Ltd | Hospitality | 2019 |
| Taxesbot Ltd | Information & communication | 2026 |
| Taxi Management Company (Leicester) Ltd | Transport & logistics | 2022 |
| Taxi-Luxe Limited | Transport & logistics | 2024 |
| Taxlogic Advisors Limited | Professional & scientific | 2025 |
| Taxplan Accountants Limited | Extraterritorial | 2017 |
| Taxrite Ltd | Professional & scientific | 2014 |
| Taxsolvers Limited | Professional & scientific | 2005 |
| Taxsolvers SA Limited | Professional & scientific | 2013 |
| Tayata Solutions Ltd | Information & communication | 2025 |
| Tayga Holdco Limited | Financial services | 2025 |
| Tayga Holdings Limited | Financial services | 2018 |
| Tayga Investments Limited | Real estate | 2011 |
| Taylor & Bosworth Limited | Professional & scientific | 2023 |
| Taylor & Co Hair Limited | Other services | 2015 |
| Taylor & Taylor Developments Ltd | Construction | 2020 |
| Taylor Bridge Property Ltd | Construction | 2026 |
| Taylor Building Solutions Limited | Construction | 2014 |