| Tiny Toez Limited | Education | 2003 |
| Tiny Tots Development C.I.C. | Education | 2020 |
| Tiny Tots Elite Development Ltd | Education | 2020 |
| Tipplers News Wednesfield Limited | Other services | 2023 |
| Tirath Limited | Administrative & support | 2012 |
| Tirath Transport Limited | Transport & logistics | 2023 |
| Tissuenet Ltd | Wholesale & retail | 2025 |
| TIT for TAT Ltd | Real estate | 2023 |
| Titan Driveways & Buildings Ltd | Construction | 2025 |
| Titan Engine Prime Ltd | Wholesale & retail | 2025 |
| Titan Multi Trade Services Ltd | Construction | 2008 |
| Titania Solutions Limited | Information & communication | 2011 |
| Titanium Building Limited | Construction | 2022 |
| Titanium Jigs Engineering Ltd | Manufacturing | 2019 |
| Titanuim Consults Ltd | Professional & scientific | 2022 |
| Tizztech Ltd | Information & communication | 2026 |
| TJ Global Ltd | Health & social care | 2014 |
| TJ Global Property Ltd | Real estate | 2020 |
| TJ Healthcare Ltd | Administrative & support | 2018 |
| Tj's Electrical Services Ltd | Construction | 2025 |
| Tjac Engineering Services Ltd | Professional & scientific | 2024 |
| TJG Building and Construction Services Ltd | Construction | 2019 |
| TJH Merch LLP | | 2021 |
| TJH Mortgage Specialist Services Ltd | Other services | 2017 |
| TJM Signature Ltd | Professional & scientific | 2025 |
| TJO Group Ltd | Construction | 2025 |
| Tj’S Housing Care Ltd | Real estate | 2025 |
| TK Diamond Scissors Ltd | Other services | 2025 |
| TK Insulation Ltd | Construction | 2024 |
| Tkdcs Limited | Real estate | 2012 |
| TKL Accountancy Ltd | Professional & scientific | 2025 |
| Tkmw Limited | Wholesale & retail | 2023 |
| TKS Construction Limited | Construction | 2025 |
| TKS Homes Ltd | Real estate | 2021 |
| TKY Properties Limited | Real estate | 2022 |
| Tlaba Limited | Professional & scientific | 2012 |
| TLC College | Education | 1997 |
| TLC Investment Group Ltd | Financial services | 2026 |
| TLC Language Centre Ltd | Education | 2005 |
| TLC Neighbourhood Nursery Ltd | Health & social care | 2006 |
| Tlc-Regen Limited | Hospitality | 2004 |
| TLG Facilities Management Ltd | Professional & scientific | 2020 |
| TLG Venue & Site Management Ltd | Professional & scientific | 2024 |
| TM Car Repair Solutions Limited | Wholesale & retail | 2017 |
| TM Hub Limited | Real estate | 2010 |
| TM Lewis & SON Limited | Wholesale & retail | 2022 |
| TMD Cleaning Ltd | Administrative & support | 2025 |
| TMJ Properties Limited | Financial services | 2024 |
| Tmrk Holdings Ltd | Construction | 2023 |
| Tmrk Ltd | Wholesale & retail | 2022 |
| Tmso Ltd | Information & communication | 2023 |
| Tmtk Limited | Construction | 2026 |
| TMW Investments Limited | Financial services | 2025 |
| TMW Plant Hire Limited | Administrative & support | 2026 |
| TMW Property Group Limited | Real estate | 2026 |
| Tmwpondservices Ltd | Administrative & support | 2019 |
| TN Design Consultants Limited | Professional & scientific | 2009 |
| TNC Consultancy Limited | Professional & scientific | 2026 |
| TNM Design Group Limited | Professional & scientific | 2019 |
| TNM Electric Services Limited | Manufacturing | 2025 |
| TNT Training Ltd | Education | 2023 |
| To-Day's Supermarkets Ltd | Wholesale & retail | 2010 |
| Toadas Solutions Limited | Real estate | 2025 |
| Toba Holdings Ltd | Wholesale & retail | 2026 |
| Tobelg Limited | Financial services | 2014 |
| Tobyjack Properties Ltd | Real estate | 2025 |
| Todak Limited | Administrative & support | 2021 |
| Todos Marketing Limited | Information & communication | 2023 |
| TOF Invest Limited | Real estate | 2025 |
| Tofik Truck Ltd | Transport & logistics | 2024 |
| Togarepi Transport Company Ltd | Transport & logistics | 2025 |
| Toje Support Services Ltd | Water & waste | 2020 |
| Tokfollowers Ltd | Wholesale & retail | 2025 |
| Tolgyesi Project Management Limited | Other services | 2020 |
| Tolley Prop Ltd | Real estate | 2025 |
| Tollhouse Court Management Company Ltd | Other services | 2024 |
| TOM Lynch Mortgages Ltd | Financial services | 2023 |
| Tomato Homes Limited | Construction | 2022 |
| Tombev Limited | Real estate | 2011 |
| Tomkins Associates Limited | Administrative & support | 2020 |
| Tommy's Carpets and Flooring Limited | Wholesale & retail | 2019 |
| Tommyposh Cleans Limited | Administrative & support | 2025 |
| Tomorrows Technology Limited | Administrative & support | 2014 |
| Toms Bars Ltd | Professional & scientific | 2013 |
| Ton'Ase Ltd. | Health & social care | 2016 |
| Tonbrie Plant Hire Limited | Administrative & support | 2006 |
| Tonel 143 Ltd | Transport & logistics | 2019 |
| Toni Sidhu Construction Ltd | Construction | 2018 |
| Tony Bouckley Limited | Administrative & support | 2016 |
| Tony Gough Transport Limited | Extraterritorial | 2001 |
| Toochiz Limited | Health & social care | 2024 |
| Tool Nation Ltd | Wholesale & retail | 2025 |
| Tools for Leading Change Ltd | Professional & scientific | 1999 |
| Toolsave Limited | Wholesale & retail | 2004 |
| Toolsmart Limited | Wholesale & retail | 2009 |
| Toor Concrete Driveways & Patios Ltd | Construction | 2025 |
| Toor Lease Estates Limited | Real estate | 2025 |
| Toora Properties Ltd | Administrative & support | 2015 |
| Top 1 Concrete Pumping Limited | Construction | 2026 |
| Top 1 Logistics Limited | Transport & logistics | 2019 |