| Tony Kinsella Limited | Information & communication | 2015 |
| Tony Parry Limited | Professional & scientific | 2017 |
| Toothman 80 Ltd | Health & social care | 2022 |
| Topaz Estates Ltd | Real estate | 2025 |
| Topham-Sing Ltd | Administrative & support | 2020 |
| Toral Barber Ltd | Other services | 2025 |
| Tormead Holdings Ltd | Construction | 2023 |
| Toronto Garage Limited | Administrative & support | 2006 |
| Torpenhow Limited | Administrative & support | 2014 |
| Torpenhow Management Limited | Real estate | 1989 |
| Total Deals Ltd | Wholesale & retail | 2026 |
| Total External Cleaning Services Ltd | Administrative & support | 2024 |
| Total Gleam Limited | Administrative & support | 2024 |
| Total Landscape Care Limited | Administrative & support | 2019 |
| Total Odds Media Ltd | Administrative & support | 2009 |
| Total Recycling Solutions Ltd | Professional & scientific | 2021 |
| Total Tanners Limited | Wholesale & retail | 2024 |
| Total Taxi Transport Ltd | Transport & logistics | 2025 |
| Tower House Developments Limited | Construction | 2019 |
| Town Lane Electricals Limited | Energy | 2016 |
| Town Lane TA Ltd | Hospitality | 2026 |
| Townfield Cafe Limited | Hospitality | 2018 |
| Townfield Lane Flats Management Limited | Households | 1989 |
| Toys on Fire UK Ltd | Wholesale & retail | 2024 |
| TP Carpets+Flooring Ltd | Wholesale & retail | 2017 |
| TPF Pipelines Ltd | Manufacturing | 2023 |
| TR LAU Investments Limited | Real estate | 2022 |
| TRA Convenience Store Ltd | Wholesale & retail | 2025 |
| Trade Interiors Ltd | Wholesale & retail | 2015 |
| Trade IT OUT Limited | Hospitality | 2017 |
| Tradie Group Ltd | Construction | 2020 |
| Trailer Trash Wirral Ltd | Other services | 2024 |
| Train to Change (UK) Limited | Education | 2009 |
| Training Bricks Ltd. | Information & communication | 2012 |
| Traknet Technologies Ltd | Professional & scientific | 2018 |
| Tranmere Electrical Limited | Construction | 2005 |
| Tranmere Rovers Trust FAN Park Limited | Hospitality | 2018 |
| Transferpay International Limited | Financial services | 2020 |
| Transform Smart Repairs Limited | Wholesale & retail | 2024 |
| Transforming Safety C.I.C. | Health & social care | 2025 |
| Transglobal Express Limited | Transport & logistics | 1993 |
| Travel Direct Taxi Limited | Extraterritorial | 2020 |
| Travel Lets Limited | Real estate | 2024 |
| Travelista Limited | Administrative & support | 2023 |
| Travelo Taxi Ltd | Transport & logistics | 2022 |
| Tree Trouble Ltd | Agriculture & fishing | 2022 |
| Trendprints Ltd | Wholesale & retail | 2025 |
| Trendy Pooches Grooming School Limited | Other services | 2017 |
| Trendy Pooches Liscard Limited | Other services | 2018 |
| Trevor Jones Accounting Solutions Limited | Professional & scientific | 2013 |
| Trevor Jones CQS Limited | Professional & scientific | 2017 |
| TRI Spiral Yoga School CIC | Other services | 2024 |
| Tri-Son Properties Limited | Construction | 2025 |
| Tri-Tone Music Limited | Information & communication | 2000 |
| Tricklevent Ltd | Extraterritorial | 2006 |
| Trident Martial Arts Ltd | Education | 2020 |
| Trident Martial Arts Wrexham Ltd | Education | 2023 |
| Trifecta Fire Door Solutions Ltd | Construction | 2024 |
| Trioevents Ltd | Hospitality | 2024 |
| Triple Double Wirral CIC | Education | 2025 |
| Triple M Commercial Finance Limited | Financial services | 2019 |
| Triquetra Surveying Ltd | Professional & scientific | 2023 |
| Tristar Records Limited | Arts & recreation | 2009 |
| Triton Consulting EOT Limited | Financial services | 2020 |
| Triton Design Ltd | Manufacturing | 2017 |
| Triton Motorcycles Ltd | Wholesale & retail | 2018 |
| Tritons Rufc Ltd | Arts & recreation | 2016 |
| TRM GAS, Plumbing & Heating Ltd | Construction | 2025 |
| Trojan Sewing Machines Limited | Administrative & support | 2017 |
| True Flight Support Ltd | Other services | 2021 |
| True Point Audio Ltd | Administrative & support | 2016 |
| Truemere Property Ltd | Real estate | 2026 |
| Truenorth Advisory Limited | Professional & scientific | 2023 |
| Truepotential Solutions Ltd | Professional & scientific | 2023 |
| Trunk Club Ltd | Wholesale & retail | 2026 |
| Trusted Tax Advice Limited | Professional & scientific | 2016 |
| Trustland Construction Limited | Construction | 1972 |
| Trustland Developments Limited | Extraterritorial | 2005 |
| Trustland Holdings Limited | Construction | 2018 |
| Trusty Properties Limited | Hospitality | 2018 |
| TS Packaging Limited | Manufacturing | 2003 |
| TSF Ltd | Manufacturing | 2019 |
| TSL Resources Limited | Administrative & support | 2015 |
| TSS Rowlands Groundworks Ltd | Construction | 2025 |
| Tsukimi Analytics Ltd | Information & communication | 2026 |
| TSW Engineers (Holdings) Limited | Financial services | 2010 |
| TSW Engineers Limited | Professional & scientific | 1971 |
| TT Maritime Services Limited | Transport & logistics | 2024 |
| TTK (Wirral) Limited | Hospitality | 2024 |
| TTP Cloud Group Ltd | Information & communication | 2019 |
| TTP Cloud Ltd | Information & communication | 2019 |
| TU Vida Ltd | Real estate | 2025 |
| Tubalu Ltd | Real estate | 2023 |
| Tudorshield Limited | Real estate | 1982 |
| TUF Investments Limited | Real estate | 2022 |
| Tuile Bakery Ltd | Manufacturing | 2023 |
| Tunnel Tyres Limited | Real estate | 1977 |
| Turbo Logistics Ltd | Transport & logistics | 2025 |
| Turbotribe Limited | Administrative & support | 2025 |
| Turkish Barber 3 Ltd | Other services | 2023 |