| Truly Wellness Ltd | Wholesale & retail | 2022 |
| Trumi Store Ltd | Wholesale & retail | 2021 |
| Trushar Optical Limited | Health & social care | 2003 |
| Trust Claims Pro Ltd | Professional & scientific | 2025 |
| Trust Developments Limited | Construction | 2020 |
| Trusted Insolvency Ltd | Financial services | 2018 |
| Trusted Torque Limited | Wholesale & retail | 2024 |
| Trustly Care Ltd | Health & social care | 2024 |
| Trustmysystem Ltd | Financial services | 2025 |
| Trusty Demolition Ltd | Construction | 2022 |
| Truth Barbers Ltd | Other services | 2026 |
| Truvo International Limited | Wholesale & retail | 2026 |
| Tryft Cars Limited | Wholesale & retail | 2024 |
| Tryft Store Limited | Wholesale & retail | 2024 |
| Trypacer Limited | Professional & scientific | 2020 |
| Tryweld Limited | Wholesale & retail | 1992 |
| TS Care Limited | Health & social care | 2024 |
| TS Innovations Limited | Information & communication | 2015 |
| TS Management Group Ltd | Construction | 2019 |
| TS Online 804 Limited | Wholesale & retail | 2026 |
| TSA Creative Limited | Professional & scientific | 2024 |
| Tsalaplus Limited | Real estate | 2024 |
| TSB Echocardiography Ltd | Health & social care | 2026 |
| TSE Consultants Ltd | Administrative & support | 2022 |
| TSL Food Limited | Hospitality | 2026 |
| TSP (NW) Limited | Wholesale & retail | 2024 |
| TSR Bars Ltd | Wholesale & retail | 2018 |
| TSS Bolton Ltd | Administrative & support | 2025 |
| Tsunami Studio Ltd | Information & communication | 2024 |
| TTA Foods Ltd | Hospitality | 2026 |
| TTA Security Ltd | Administrative & support | 2022 |
| TTG Haulage Ltd | Transport & logistics | 2024 |
| Ttsg Ltd | Information & communication | 2021 |
| Tuad Ltd | Transport & logistics | 2021 |
| Tube Capital Ltd | Financial services | 2022 |
| Tubs N Taps (Warrington) Ltd | Wholesale & retail | 2026 |
| Tudor Court Management (Worsley) Limited | Real estate | 2001 |
| Tudorhouse Estates Ltd | Real estate | 2020 |
| Tudorhouse Resourcing Ltd | Administrative & support | 2010 |
| Tuems Limited | Construction | 2018 |
| Tuesday's Skateshop Limited | Wholesale & retail | 2016 |
| Tuffa FX Ltd | Professional & scientific | 2023 |
| Tulip Store Limited | Wholesale & retail | 2025 |
| Tulum Group Ltd | Hospitality | 2020 |
| Tumba Ltd | Information & communication | 2016 |
| Tumblestone Developments Ltd | Financial services | 2026 |
| Tuned in Properties Limited | Real estate | 2023 |
| Tunji Braithwaite Law Partners Limited | Professional & scientific | 2025 |
| Tuppen Property Investments Ltd | Real estate | 2024 |
| Turbofish Ltd | Information & communication | 2023 |
| Turk UK Pet Travel Limited | Transport & logistics | 2016 |
| Turkish Eatery Ltd | Hospitality | 2022 |
| Turkita Ltd | Hospitality | 2025 |
| Turmanerk (UK) Ltd | Wholesale & retail | 2017 |
| Turn UP the Value Ltd | Professional & scientific | 2017 |
| Turnkey Properties Ltd. | Real estate | 1996 |
| Turnkey Property Maintenance Ltd | Construction | 2023 |
| Turnnup.Com Ltd | Information & communication | 2015 |
| Turtle Bay Limited | Real estate | 2017 |
| Turtle Technologies Ltd | Information & communication | 2026 |
| Turtle Trading Ltd | Wholesale & retail | 2012 |
| Turton Barbers Limited | Other services | 2024 |
| Turton Capital Limited | Real estate | 2017 |
| Turton Design Services Ltd | Professional & scientific | 2019 |
| Turton Industrial Doors Ltd | Manufacturing | 2021 |
| Turton News & OFF Licence Ltd | Wholesale & retail | 2016 |
| Turton Wines Ltd | Wholesale & retail | 2008 |
| Tute Education Limited | Education | 2012 |
| Tutela Consultancy Ltd | Professional & scientific | 2021 |
| Tutor Rise Ltd | Education | 2021 |
| Tutoring Quest Ltd | Education | 2025 |
| Tutti Group Ltd | Hospitality | 2023 |
| Tuwells Ltd | Wholesale & retail | 2021 |
| TVC Outdoor Ltd | Professional & scientific | 2020 |
| TVD (NW) Holdings Limited | Financial services | 2010 |
| TVD (NW) Limited | Wholesale & retail | 1996 |
| TVH Property and Lettings Limited | Real estate | 2024 |
| TW Plumbing Ltd | Construction | 2018 |
| Twelve Twelve Holdings Ltd | Financial services | 2024 |
| Twenty Eight Capital Limited | Professional & scientific | 2023 |
| Twenty Eight Group Limited | Professional & scientific | 2024 |
| Twill Textiles Ltd | Wholesale & retail | 2024 |
| Twilsoft Ltd | Information & communication | 2021 |
| Twin Dogs Ltd | Manufacturing | 2025 |
| Twisted Guru Ltd | Professional & scientific | 2016 |
| Twisted Tale Promotions Ltd | Administrative & support | 2020 |
| Twistou Limited | Wholesale & retail | 2013 |
| TWJ Shelfco 002 Limited | Real estate | 2007 |
| Twkhan Limited | Health & social care | 2013 |
| TWL Traders Ltd. | Construction | 2016 |
| TWN Brothers Limited | Wholesale & retail | 2025 |
| Two Back and Sides Ltd | Other services | 2024 |
| Two Learning Chicks Limited | Other services | 2021 |
| Two Sales Gurus Ltd | Professional & scientific | 2024 |
| Twodale Limited | Hospitality | 2000 |
| Twoman Ltd | Wholesale & retail | 2024 |
| Twomey Haulage Limited | Transport & logistics | 2026 |
| TWS Building Surveying Ltd | Financial services | 2020 |
| TX Commercial Services Limited | Professional & scientific | 2003 |
| TX Consulting Limited | Wholesale & retail | 2024 |