| Theatre Royal (ST. Helens) Trust(The) | Arts & recreation | 1986 |
| Thee Ltd | Wholesale & retail | 2024 |
| Themumpillar Hub CIC | Administrative & support | 2024 |
| Therafit Ltd | Health & social care | 2022 |
| Therafit Wellbeing CIC | Other services | 2025 |
| Therapeutic Adventures Ltd | Health & social care | 2018 |
| Thermal Build (North and Yorkshire) Limited | Construction | 2025 |
| THG Agriculture Ltd | Professional & scientific | 2026 |
| This IS My Education (Time) Ltd | Education | 2021 |
| Thomas & Co Guardian Mortgage Services Ltd | Financial services | 2019 |
| Thomas & George Ltd | Wholesale & retail | 2017 |
| Thomson Scaffolding NW Limited | Construction | 2016 |
| Threads Hairdressing Ltd | Other services | 2021 |
| Threemg Transport Limited | Transport & logistics | 2026 |
| THV Saddling Limited | Wholesale & retail | 2023 |
| THW Private Ltd | Hospitality | 2026 |
| Tidbits & Treats Limited | Wholesale & retail | 2021 |
| Tigo Transport Limited | Transport & logistics | 2019 |
| Tika-App Ltd | Information & communication | 2023 |
| TIM Trans 2022 Ltd | Transport & logistics | 2022 |
| Time to Shine Contract Cleaning Limited | Construction | 2015 |
| Timetochill.Service Limited | Manufacturing | 2022 |
| Timz Property Limited | Real estate | 2025 |
| Tinkwash Ltd | Administrative & support | 2024 |
| Tinsley Developments Limited | Real estate | 2024 |
| TIR Y Coed Limited | Hospitality | 2016 |
| Titan Lettings Ltd | Real estate | 2023 |
| Titan Steel Projects Ltd | Other services | 2009 |
| Titanconnections Ltd | Construction | 2025 |
| TJ Hurst Construction Ltd | Construction | 2023 |
| TJM Projects Limited | Construction | 2004 |
| TJM Roofing and Solar Ltd | Construction | 2026 |
| TL Fleet Clean Ltd | Administrative & support | 2025 |
| TLB Property Group Ltd | Real estate | 2026 |
| TLB1 Ltd | Wholesale & retail | 2026 |
| Tlbflowers Limited | Wholesale & retail | 2025 |
| TLC Hair and Beauty Salon Limited | Other services | 2014 |
| Tlek Ltd | Construction | 2020 |
| TMP Construction Ltd | Construction | 2025 |
| Tobias Ferguson Design Studio Ltd | Information & communication | 2025 |
| Tobkad Ltd | Wholesale & retail | 2022 |
| TOE2FOOT Ltd | Health & social care | 2026 |
| Toft Road LLP | | 2023 |
| Token Engineering Services Limited | Professional & scientific | 2003 |
| Tomasz 24 Transport Ltd | Transport & logistics | 2018 |
| Tomlinsons of Lytham Limited | Health & social care | 2009 |
| Tomsand Ltd | Information & communication | 2025 |
| Tomsco Properties Limited | Real estate | 2024 |
| Toni Marie Yoga Ltd | Health & social care | 2024 |
| Tony Mccormick Ltd | Construction | 2018 |
| Top 5 Tips Ltd | Other services | 2025 |
| Top Bins Tickets Ltd | Wholesale & retail | 2025 |
| Top House Management Limited | Households | 2019 |
| Top Nails ST Helens Ltd | Other services | 2026 |
| Top Security Alarm Systems Limited | Administrative & support | 2008 |
| Top Shop Mini Market ST Helens Ltd | Wholesale & retail | 2024 |
| Topdare Limited | Real estate | 1987 |
| Topp Electrical Services Limited | Construction | 2014 |
| Topp Property Services Ltd | Real estate | 2020 |
| Torus 62 Commercial Services Ltd. | Construction | 2004 |
| Torus Foundation | Arts & recreation | 2013 |
| Torus Living Limited | Extraterritorial | 2015 |
| TORUS62 Developments Limited | Construction | 2015 |
| Total LAB Supplies Ltd | Wholesale & retail | 2017 |
| Total Services Group (Refurbishments) Ltd | Construction | 2020 |
| Toucan Management Group Ltd | Administrative & support | 2024 |
| Tour Merchandise Ltd | Wholesale & retail | 2026 |
| Town Centre Rentals Ltd. | Real estate | 2011 |
| Town in the Town CIC | Health & social care | 2025 |
| Townfield Pharmacy Limited | Wholesale & retail | 2003 |
| Toyseek Limited | Wholesale & retail | 2020 |
| Tradalysis Limited | Education | 2020 |
| Trade Axis Commercial Ltd | Wholesale & retail | 2026 |
| Trade Golf Supplies Limited | Arts & recreation | 1985 |
| Trade Technical Limited | Construction | 2025 |
| Trade Window Specialist Ltd | Construction | 2018 |
| Trading Corner Ltd | Financial services | 2022 |
| Trading Roofing Supplies Limited | Wholesale & retail | 2020 |
| Traffic Management Solutions NW Ltd | Construction | 2025 |
| Trans NW Ltd | Transport & logistics | 2020 |
| Transport House Ltd | Real estate | 2021 |
| Transportation Logistics Limited | Transport & logistics | 2019 |
| Transylvania Motors Ltd | Wholesale & retail | 2018 |
| Trapasso Emina Ltd | Hospitality | 2025 |
| Travel Kare Ltd | Administrative & support | 2020 |
| Travelling Tots & Kids Ltd | Wholesale & retail | 2024 |
| Travers Care Limited | Administrative & support | 2009 |
| Travers Care Services Limited | Administrative & support | 2009 |
| Travis Autos Limited | Manufacturing | 2016 |
| Traynor Telecoms Ltd | Information & communication | 2023 |
| Treddan Ltd | Professional & scientific | 2025 |
| Treetopia Ltd | Transport & logistics | 2024 |
| Trendikart Limited | Wholesale & retail | 2025 |
| Trendy Goods Online Ltd | Wholesale & retail | 2025 |
| Trevelyan Apartments Ltd | Hospitality | 2021 |
| Tri.Endurance Limited | Wholesale & retail | 2020 |
| Triangle Elec Ltd | Construction | 2021 |
| Tribax Ltd | Real estate | 2025 |
| Trident Flavaz Ltd | Hospitality | 2022 |
| Trip & Hendy Limited | Wholesale & retail | 2025 |