| Trade Cleaning Supplies (UK) Limited | Wholesale & retail | 2022 |
| Trade Plastic Centre Limited | Wholesale & retail | 2022 |
| Trade Vehicle Specialists Ltd | Wholesale & retail | 2023 |
| Trade Winds Capital Limited | Financial services | 2013 |
| Trader Systems Limited | Information & communication | 1989 |
| Trading World NW Ltd | Wholesale & retail | 2021 |
| Traffic Safety and Management Design Services Limited | Construction | 2013 |
| Trafford Body Repair Centre Limited | Wholesale & retail | 2012 |
| Trafford Timber and Damp-Proofing Specialists Limited | Manufacturing | 1978 |
| Trailart Ltd | Arts & recreation | 2020 |
| Trailcast Ltd | Information & communication | 2026 |
| Training and Safety Consultants Limited | Professional & scientific | 2013 |
| Tranquil Homes and Services Limited | Real estate | 2008 |
| Tranquil Recruitment Solutions Ltd | Administrative & support | 2023 |
| Transauto Garage Limited | Wholesale & retail | 2005 |
| Transcend Holdings UK Ltd | Other services | 2023 |
| Transeurasia Limited | Extraterritorial | 1998 |
| Translite Logistics Ltd | Transport & logistics | 2006 |
| Treadpoint Ltd | Extraterritorial | 2019 |
| TRI Property Solutions LLP | | 2019 |
| Triage Holdings Limited | Other services | 2006 |
| Triage Services Limited | Other services | 1997 |
| Tribe of Doris | Arts & recreation | 2002 |
| Trinity MAX Ltd | Construction | 2019 |
| Triples Apparel Limited | Professional & scientific | 2017 |
| Trisonic Discovery Ltd | Manufacturing | 2024 |
| Triton (North West) Limited | Wholesale & retail | 2013 |
| Triunfo Limited | Hospitality | 2013 |
| Trojan Construction Products Limited | Wholesale & retail | 2009 |
| Tropical Bakery UK Limited | Manufacturing | 2018 |
| TRS Global Education Consultants Ltd | Education | 2023 |
| Truckin' Heroes Limited | Wholesale & retail | 2025 |
| True Bearing (North West) Ltd | Financial services | 2015 |
| True Bearing Limited | Financial services | 2003 |
| True Creatives Ltd | Information & communication | 2025 |
| True Homes Property Management Limited | Real estate | 2025 |
| Trueformcontracting Ltd | Administrative & support | 2026 |
| Truenorth Partnerships Ltd | Construction | 2025 |
| Truform Medical Limited | Manufacturing | 2026 |
| Trust Inns Limited | Hospitality | 1995 |
| Trust-Hub Limited | Information & communication | 2020 |
| Trustair Limited | Transport & logistics | 1990 |
| Trusted Financial Solutions Ltd | Extraterritorial | 2019 |
| Trusted Planning Solutions Ltd | Extraterritorial | 2019 |
| Trusted Renovation Solutions Ltd | Construction | 2023 |
| Trustlayer Technologies Ltd | Information & communication | 2026 |
| TSH Commercials Ltd | Wholesale & retail | 2026 |
| TSS F0CUS Limited | Professional & scientific | 2009 |
| Tsteel Fabrications Ltd | Construction | 2011 |
| TTG Contractors Ltd | Professional & scientific | 2020 |
| Tubs Direct Limited | Wholesale & retail | 2015 |
| Tulisworld Ltd | Professional & scientific | 2008 |
| Tunbrook Holdings Limited | Manufacturing | 2020 |
| Tupi’S Limited | Hospitality | 2022 |
| Turkey Clinic Reviews Ltd | Professional & scientific | 2026 |
| Turkish Hairlines Barber Shop Ltd | Other services | 2020 |
| Turkish Kebab and Pizza 1 Limited | Hospitality | 2025 |
| Turkish Touch Barbers Limited | Other services | 2019 |
| Turnaround Consultancy Limited | Administrative & support | 2014 |
| Turnaround Together Limited | Hospitality | 2023 |
| Turner Construction & Developments Ltd | Construction | 2016 |
| Turner Developments North West Ltd | Construction | 2024 |
| Turner Lambert (Morecambe) Limited | Real estate | 2019 |
| Turner Lambert (Sedbergh) Limited | Real estate | 2019 |
| Turner Lambert (Sedbergh) Management Company Limited | Real estate | 2024 |
| Turner Lambert Construction Limited | Construction | 2020 |
| Turner Lambert Developments Limited | Real estate | 2019 |
| Turner Westwell Limited | Real estate | 2023 |
| Turners Sustainable Fencing Ltd | Manufacturing | 2019 |
| Turton Doors Limited | Professional & scientific | 2015 |
| Tutsi Farm Pet Supplies Limited | Wholesale & retail | 2019 |
| Tuuv Limited | Professional & scientific | 2024 |
| TVC Trading Ltd | Wholesale & retail | 2024 |
| TVS Logistics Investment UK Limited | Financial services | 2009 |
| TVS SCS IFM Limited | Transport & logistics | 1993 |
| TVS Supply Chain Solutions Limited | Wholesale & retail | 1992 |
| TW Plasterers Limited | Construction | 2002 |
| TWA Marketing and Communications Ltd | Professional & scientific | 2018 |
| Twenty Seven Chorley Limited | Hospitality | 2019 |
| Twifm Limited | Extraterritorial | 2008 |
| Twitawoo Ltd | Professional & scientific | 2025 |
| Two Birds Tea Room Ltd | Hospitality | 2010 |
| Two Little Cubs Ltd | Wholesale & retail | 2025 |
| Two Oaks Holdings Limited | Real estate | 2008 |
| Twoesports Limited | Administrative & support | 2021 |
| Twohildas Ltd | Households | 2025 |
| Twsp (Holdings) Limited | Financial services | 2026 |
| Twyn Brickwork Limited | Construction | 2023 |
| TY Holdings Limited | Real estate | 2020 |
| TYB2 Limited | Real estate | 2025 |
| Tyger Tyger Rocks Limited | Wholesale & retail | 2021 |
| Tyger Tyger Spirit Limited | Wholesale & retail | 2021 |
| Tylers Holding Company Ltd | Real estate | 2024 |
| Tylers Solicitors Limited | Professional & scientific | 2009 |
| Tymora Holdings Ltd | Financial services | 2023 |
| Tyre Techs Limited | Wholesale & retail | 2020 |
| Tyrer Paving and Groundworks Ltd | Administrative & support | 2016 |
| Tysr (Asbestos) Limited | Wholesale & retail | 2022 |
| Tysr Analysis Limited | Professional & scientific | 2025 |
| Tysr Labs Limited | Professional & scientific | 2025 |