| Transform Medical Services Limited | Health & social care | 2024 |
| Transformation Collaborative Ltd | Professional & scientific | 2024 |
| Translation Empire Ltd | Professional & scientific | 2008 |
| Transportation Direct Ltd | Transport & logistics | 2019 |
| Transworld Capital LLP | | 2013 |
| Transworld Capital Partners Ltd | Professional & scientific | 2023 |
| Travelbolt Ltd | Administrative & support | 2024 |
| Travels 786 Rochdale Ltd | Transport & logistics | 2022 |
| Travels by Appointments Limited | Administrative & support | 2022 |
| Tray Property Ltd | Real estate | 2024 |
| Treadstone Infrastructure Solutions Ltd | Professional & scientific | 2026 |
| Treasurebay Trading Ltd | Wholesale & retail | 2025 |
| Treat EM Ltd | Hospitality | 2025 |
| Treble Financial Solutions Ltd | Financial services | 2021 |
| Tree of Life Educational and Holistic Services CIC | Education | 2022 |
| Tree of Life Educational and Therapeutic Ltd | Education | 2025 |
| Trenap Limited | Real estate | 2025 |
| Trend Changer Ltd | Wholesale & retail | 2025 |
| Trend Joinery and Construction Ltd | Manufacturing | 2017 |
| Trendurable Limited | Wholesale & retail | 2023 |
| Tri-Cast Composite Tubes Limited | Manufacturing | 1982 |
| Triad Fabrications Limited | Construction | 2004 |
| Triangle Facility Management Ltd | Wholesale & retail | 2019 |
| Triangle Maintenance Ltd | Manufacturing | 2019 |
| Tribez Ltd | Hospitality | 2022 |
| Tricky Clothing Ltd | Wholesale & retail | 2020 |
| Trident Health and Performance Ltd | Health & social care | 2022 |
| Trinity Building Surveying Services Limited | Information & communication | 2022 |
| Trinity Care Rochdale Ltd | Health & social care | 2022 |
| Trinity Memorials Ltd | Other services | 2025 |
| Triosell Limited | Wholesale & retail | 2024 |
| Triple J Commercials Ltd | Other services | 2023 |
| Triple O Training Ltd | Professional & scientific | 2016 |
| Triple R Logistics Limited | Transport & logistics | 2021 |
| TRIPLE-7-REFURBS Limited | Manufacturing | 2025 |
| Trosretra Limited | Construction | 2025 |
| True Taste (Norden) Ltd | Hospitality | 2026 |
| True Taste of India (Norden) Ltd | Hospitality | 2010 |
| Truebuildweb.Co Ltd | Information & communication | 2026 |
| Truenorth Homecare Ltd | Health & social care | 2025 |
| Truequest Products Ltd | Wholesale & retail | 2025 |
| Truestone Investments Limited | Financial services | 2026 |
| Trurf Ltd | Hospitality | 2026 |
| Trustfolio Ltd | Information & communication | 2020 |
| Trycleen Limited | Wholesale & retail | 2025 |
| TS Optics Ltd | Health & social care | 2022 |
| Tsalmanandco Ltd | Real estate | 2024 |
| Tsikai and Munya Ltd | Health & social care | 2012 |
| TT Business Services Ltd | Professional & scientific | 2012 |
| TT Electronics Power Solutions (UK) Limited | Manufacturing | 2018 |
| TTA Construx Ltd | Construction | 2025 |
| Tucute Ltd | Wholesale & retail | 2018 |
| Tufco Limited | Administrative & support | 2013 |
| Tumayo Ltd | Wholesale & retail | 2021 |
| Tunnel Vision Ltd | Arts & recreation | 2026 |
| Tunshill Golf Club Limited | Arts & recreation | 1943 |
| Tunstall Farm Limited | Real estate | 2012 |
| Turf Hill Grocers Ltd | Wholesale & retail | 2015 |
| Turf Hill Property Company Limited | Real estate | 2025 |
| Turner Leisure Limited | Hospitality | 2019 |
| Turners Management and Training Limited | Administrative & support | 2019 |
| Tuta Construction Ltd | Construction | 2023 |
| TV Talent Limited | Arts & recreation | 2014 |
| TW Education Limited | Administrative & support | 2021 |
| Twan Boba Wholesale Ltd | Wholesale & retail | 2021 |
| Twemlow Holdings Limited | Professional & scientific | 2021 |
| Twenty 07 Limited | Wholesale & retail | 2020 |
| TWH Photography Limited | Professional & scientific | 2006 |
| Twilight Benefits (Manchester) Limited | Administrative & support | 2023 |
| Twin Automating Limited | Manufacturing | 1999 |
| Twin Luxe Limited | Manufacturing | 2025 |
| TWINS4LOV Health Care Services Limited | Health & social care | 2024 |
| Twisted Fish Clothing Ltd | Wholesale & retail | 2017 |
| Two Capricorns Estate Limited | Real estate | 2019 |
| Two Face Aesthetics Limited | Wholesale & retail | 2020 |
| Two Five Developments Ltd | Construction | 2021 |
| Two Kingdoms Holding Limited | Wholesale & retail | 2026 |
| Two White Heads Limited | Professional & scientific | 2006 |
| Tyler Molyneuex Limited | Extraterritorial | 2024 |
| Tyler Nordstrom Limited | Extraterritorial | 2024 |
| Typedx Ltd | Wholesale & retail | 2023 |
| Tyre Master (Rochdale) Ltd | Other services | 2022 |
| Tyre Recycle UK Ltd | Water & waste | 2026 |
| Tyrer Financial Services Limited | Financial services | 2019 |
| Tyrevibe Ltd | Wholesale & retail | 2024 |
| TYS Logistics Ltd | Transport & logistics | 2017 |
| U a U Ltd | Professional & scientific | 2015 |
| U K Y Distribution Ltd | Wholesale & retail | 2026 |
| U&O Future Ltd | Construction | 2024 |
| U.A Consultancy Limited | Professional & scientific | 2026 |
| UA Healthcare Ltd | Health & social care | 2023 |
| UA Medical Services Limited | Health & social care | 2012 |
| UB Wholesale Ltd | Wholesale & retail | 2021 |
| Ucare Point UK Ltd | Wholesale & retail | 2026 |
| UGM Trade Limited | Wholesale & retail | 2026 |
| UGO Allure Ltd | Wholesale & retail | 2023 |
| UI Invest Ltd | Real estate | 2026 |
| UK Auto Retrofits Ltd | Wholesale & retail | 2019 |
| UK Burger Hub Ltd | Hospitality | 2024 |
| UK Cctv & Security Systems Ltd | Construction | 2019 |