| Thornton Events Ltd | Professional & scientific | 2020 |
| Thornton House Limited | Households | 1983 |
| Thorpe & Thorpe Holdings Ltd | Arts & recreation | 2026 |
| Thread Concepts Limited | Wholesale & retail | 2025 |
| Thread Frontier Ltd | Wholesale & retail | 2026 |
| Three Suites Ltd | Construction | 2025 |
| Thrive Case Management Limited | Health & social care | 2025 |
| Tick List Limited | Construction | 2022 |
| Tide+ Ltd | Professional & scientific | 2017 |
| Tidy Paws Ltd. | Other services | 2005 |
| Tiger Kombucha Ltd | Manufacturing | 2023 |
| Tigon Properties Limited | Real estate | 2016 |
| TIK Taco Ltd | Hospitality | 2021 |
| Tiktok Decor Limited | Information & communication | 2023 |
| Tilleys Butty Shop Limited | Hospitality | 2025 |
| TIM Rhodes Stone Solutions Ltd. | Professional & scientific | 2010 |
| TIM Rydings Engineering Limited | Construction | 2009 |
| Time Precision Group Limited | Financial services | 2003 |
| Time-Precision Limited | Extraterritorial | 2003 |
| Timely Homecare Services Limited | Administrative & support | 2026 |
| Timely MEE Ltd | Other services | 2021 |
| Times Square Project Ltd | Construction | 2025 |
| Timkon Services Limited | Administrative & support | 1991 |
| Timpetian Ltd | Construction | 2024 |
| Tinaserino Limited | Financial services | 2019 |
| Tinchy Ltd | Health & social care | 2019 |
| Tiny Giants Productions Ltd | Arts & recreation | 1999 |
| Tiny Treasures Equestrian Ltd | Education | 2025 |
| Tiny Treasures Hearts and Hooves CIC | Health & social care | 2026 |
| TIP Holding Ltd | Real estate | 2024 |
| Titan Mechanical Services Ltd | Construction | 2025 |
| Titan Performance Ltd | Arts & recreation | 2018 |
| TJ Barton Flying Services Limited | Real estate | 2025 |
| TJF Building and Maintenance Limited | Construction | 2021 |
| TK Legal Training Ltd | Education | 2013 |
| TKG Healthcare Services Ltd | Health & social care | 2015 |
| TLM Solutions Limited | Professional & scientific | 2017 |
| TM Marcel Ltd | Administrative & support | 2023 |
| TMC Electrical Limited | Extraterritorial | 2022 |
| TMF Consultancy Services Ltd | Professional & scientific | 2015 |
| Tobex Governance & Training Consultancy Ltd | Professional & scientific | 2026 |
| Tobin Roofing and Building Services Limited | Construction | 2014 |
| TOE Curling Limited | Health & social care | 2025 |
| Tofan Technology Limited | Information & communication | 2024 |
| Together Communications Limited | Information & communication | 2023 |
| Together Presents Ltd | Other services | 2025 |
| Toko Distribution Limited | Wholesale & retail | 2003 |
| Tolliros Services Limited | Professional & scientific | 2012 |
| TOM Barwell Financial Services Limited | Financial services | 2017 |
| TOM Jones & Sons Limited | Administrative & support | 2003 |
| Tommy Vincent Limited | Other services | 2015 |
| Tonys GAS Services Ltd | Construction | 2025 |
| Toorawood Ltd | Professional & scientific | 2017 |
| Top Bird Limited | Wholesale & retail | 2023 |
| Top Fade Nice Barber Ltd | Other services | 2022 |
| Top Shine Southport Ltd | Wholesale & retail | 2011 |
| Torus Rope Access & Rescue Ltd | Other services | 2025 |
| Total Deal Packaging Ltd | Real estate | 2024 |
| Total GAS Safety Limited | Construction | 1997 |
| Total Heating & Plumbing Solutions Ltd | Energy | 2017 |
| Total International Transport Ltd | Transport & logistics | 2019 |
| Total Medical Group Ltd | Health & social care | 2022 |
| Total Passive Fire Solutions Limited | Administrative & support | 2022 |
| Total Recruitment Solutions Ltd | Administrative & support | 2018 |
| Total Security North West Limited | Administrative & support | 2021 |
| Total Solutions (Northern) Limited | Other services | 2006 |
| Total Solutions (Property) Ltd | Real estate | 2020 |
| Totally D'Vine Catering Ltd | Hospitality | 2020 |
| Touchstone Management (UK) Limited | Real estate | 2002 |
| Town and Port Advisory Services Limited | Professional & scientific | 2016 |
| Town Vets Limited | Professional & scientific | 2011 |
| Towndrow Fidelis Ltd | Professional & scientific | 2023 |
| Townsend Jackson Limited | Health & social care | 2017 |
| TP Mechanical Engineering Ltd | Professional & scientific | 2020 |
| Tpgcc Limited | Professional & scientific | 2017 |
| TR Joinery (NW) Limited | Construction | 2024 |
| Trackstop Limited | Hospitality | 2001 |
| Tracy Phillips Estates Limited | Real estate | 2013 |
| Tradb Ltd | Administrative & support | 2016 |
| Trade One Property Management Ltd | Real estate | 2013 |
| Tradechem Ltd | Wholesale & retail | 2024 |
| Trafalgar Fiduciary Services Limited | Administrative & support | 2017 |
| Trafalgar Housing Limited | Real estate | 2017 |
| Trafalgar Wealth Ltd | Financial services | 2020 |
| Train 2 Travel Ltd | Education | 2019 |
| Train Everything Ltd | Education | 2023 |
| Training Risk Solutions Limited | Financial services | 2022 |
| Transatlantico Ltd | Wholesale & retail | 2017 |
| Transform Fitness Training Ltd | Arts & recreation | 2017 |
| Transpay Limited | Financial services | 2015 |
| Transport Trends Ltd | Administrative & support | 2020 |
| Trapnell Landscapes Ltd | Administrative & support | 2014 |
| Travel Mobility Limited | Wholesale & retail | 2016 |
| Travel Sales Ltd | Extraterritorial | 2016 |
| Treat Street Southport Ltd | Hospitality | 2026 |
| Treatment for YUE Ltd | Other services | 2019 |
| Trees for Jesus Limited | Wholesale & retail | 2024 |
| Treis Salon Limited | Other services | 2020 |
| Trevor Cave & Co Ltd | Real estate | 2021 |
| Tribe Social Marketing Ltd | Professional & scientific | 2017 |