| Thinking Pensions Ltd | Administrative & support | 2024 |
| Thinktank Management Consultancy Limited | Professional & scientific | 2007 |
| Third Empire Limited | Wholesale & retail | 2019 |
| Third Party Assist Ltd | Administrative & support | 2010 |
| Thirsty Drinks Ltd | Hospitality | 2024 |
| Thirty Four Capital LLP | | 2016 |
| Thirty-Five Coffee Ltd | Hospitality | 2025 |
| This Extraordinary Life Ltd | Professional & scientific | 2022 |
| This IS Facecare Limited | Other services | 2024 |
| This IS Homeopathy Limited | Health & social care | 2023 |
| Thistleton Sports Medicine Services Limited | Health & social care | 2024 |
| Thomas Bryers Ltd | Real estate | 2026 |
| Thomas Hutchinson Associates Limited | Professional & scientific | 2013 |
| Thomas Lloyd Geologist Ltd | Professional & scientific | 2021 |
| Thomas Performance Limited | Wholesale & retail | 2020 |
| Thomas Williams Social Care Consultant Limited | Public administration | 2025 |
| Thompson (Holdings) Limited | Professional & scientific | 1988 |
| Thompson Maritime Services Ltd | Transport & logistics | 2019 |
| Thonse Limited | Health & social care | 2016 |
| Thor's Stone Property Ltd | Real estate | 2021 |
| Thor's Stone Services Limited | Real estate | 2022 |
| Thornfield Electrical Limited | Extraterritorial | 2002 |
| Thornford Darley Limited | Wholesale & retail | 2018 |
| Thornley Building Services Ltd | Construction | 2025 |
| Thornton Hall Health Club Limited | Arts & recreation | 1984 |
| Thornton Hall Hotel Limited | Hospitality | 1987 |
| Thornton Legal Ltd | Administrative & support | 2015 |
| Thornton Manor (North West) Holdings Limited | Real estate | 2019 |
| Thornton Manor Country Estate Limited | Hospitality | 2019 |
| Thornton Park Estate Limited | Real estate | 2017 |
| Thoro Global Limited | Professional & scientific | 2016 |
| Thorstone Internal Audit Consulting Ltd | Professional & scientific | 2024 |
| Thredit Ltd | Extraterritorial | 2014 |
| Three Graces Investments Limited | Hospitality | 2026 |
| Three Little Superpigs Limited | Information & communication | 2020 |
| Three Media Holdings Ltd | Professional & scientific | 2023 |
| Three Minutes to Limited | Information & communication | 2023 |
| Three Swallows Ltd | Wholesale & retail | 2010 |
| Three White Paws Limited | Financial services | 2022 |
| Thrive Coaching Group Ltd | Other services | 2025 |
| Thrive Wellbeing Wirral CIC | Education | 2026 |
| Thung Thong Ltd | Hospitality | 2025 |
| Thurstaston GIN Company Limited | Manufacturing | 2019 |
| Thuthuka Talent and OD Consultancy Limited | Professional & scientific | 2021 |
| Thvc Wirral Ltd | Arts & recreation | 2026 |
| THW Investments Ltd | Professional & scientific | 2017 |
| TI Renewables Limited | Professional & scientific | 2023 |
| Tidewater Limited | Transport & logistics | 2020 |
| Tidy Team Ltd | Administrative & support | 2025 |
| Tilevista Ltd | Wholesale & retail | 2024 |
| Tilt Heat Ltd | Construction | 2021 |
| Time Hairdressing (2011) Limited | Other services | 2011 |
| Time to Ignite Limited | Professional & scientific | 2022 |
| Time Wellness Ltd | Wholesale & retail | 2018 |
| TIME2RETIRE Ltd | Information & communication | 2024 |
| Timeapply Analytica Ltd | Information & communication | 2019 |
| Tinamar C S Limited | Health & social care | 2014 |
| Tinston Ltd | Professional & scientific | 2026 |
| TIT4NS Limited | Arts & recreation | 2023 |
| Titans Gym Limited | Arts & recreation | 2009 |
| Titanworks Ltd | Manufacturing | 2025 |
| Titleguard Ltd | Real estate | 2024 |
| Tivoli Villas Ltd | Real estate | 2024 |
| TJ & SE Mercer Healthcare Ltd | Health & social care | 2022 |
| TJ Trading (NW) Ltd | Wholesale & retail | 2024 |
| TJC Brickwork Ltd | Construction | 2025 |
| TJG (NW) Ltd | Manufacturing | 2022 |
| TJN Retail Ltd | Wholesale & retail | 2022 |
| TLC GM Limited | Wholesale & retail | 2023 |
| TLF Logistics Ltd | Transport & logistics | 2023 |
| TLP Partnership Limited | Professional & scientific | 2016 |
| TLS MA Limited | Professional & scientific | 2022 |
| Tlsp Movie Limited | Information & communication | 2025 |
| TLT Nuts & Bolt-Ons Construction Limited | Professional & scientific | 2022 |
| TM Shopping Centre Leasing Ltd | Real estate | 2014 |
| TMC Publishing Limited | Information & communication | 2016 |
| TMG Mortgages Limited | Financial services | 2019 |
| Tmitch Ltd | Health & social care | 2025 |
| TMT (UK) Limited | Real estate | 2010 |
| Tmza Engineering Ltd | Professional & scientific | 2024 |
| TN Electrical Services North West Ltd | Construction | 2018 |
| TN Property Ltd | Real estate | 2019 |
| Toccoa Limited | Administrative & support | 2024 |
| Toffee Shop Everton Ltd | Wholesale & retail | 2025 |
| Toft Foods Ltd | Manufacturing | 2011 |
| Toft Health Ltd | Wholesale & retail | 2020 |
| Tokentutor Ltd | Education | 2025 |
| TOM Clarke Health and Fitness Ltd | Education | 2024 |
| TOM Clothier Farrier Ltd | Manufacturing | 2024 |
| TOM Golf Range Limited | Arts & recreation | 2016 |
| TOM Manger Consulting Limited | Professional & scientific | 2019 |
| TOM Slinger Ltd | Professional & scientific | 2026 |
| TOM Sumner's Test Consultancy Services Ltd | Administrative & support | 2019 |
| Tom's Tools Limited | Real estate | 2017 |
| Tomboy Music Limited | Arts & recreation | 2017 |
| Tommy Tiger Training Limited | Education | 2014 |
| Tomorrow Will BE a Good Day Ltd | Professional & scientific | 2021 |
| Tomys Medical Ltd | Health & social care | 2025 |
| Tom’S Logs & Firewood Limited | Agriculture & fishing | 2025 |
| Tonanti Limited | Professional & scientific | 2008 |