| TS & B Holdings Limited | Financial services | 2024 |
| Ts&B Property Development Ltd | Construction | 2025 |
| TSA Properties Management Ltd | Real estate | 2023 |
| Tsamedicals Ltd | Health & social care | 2021 |
| TSC Support & Care PVT Ltd | Health & social care | 2024 |
| Tscott Property Holdings Ltd | Real estate | 2024 |
| TSD Advisory Services Limited | Professional & scientific | 2020 |
| Tsetso & SON Ltd | Transport & logistics | 2019 |
| TSF Services Ltd | Professional & scientific | 2015 |
| TSI UK Services Ltd | Transport & logistics | 2025 |
| TSM Engineering Consultancy Ltd | Administrative & support | 2016 |
| TSM Property Management Limited | Real estate | 2023 |
| Tsurumi Pumps UK Limited | Wholesale & retail | 1990 |
| Tsurumi UK Limited | Wholesale & retail | 2019 |
| Ttechsecure Ltd | Administrative & support | 2025 |
| TTJ Legal Limited | Professional & scientific | 2019 |
| Ttshv Limited | Other services | 2015 |
| Tubenet Engineering Limited | Wholesale & retail | 2009 |
| Tubular Techniques Limited | Professional & scientific | 2005 |
| Tuck Commercial Management Limited | Real estate | 1997 |
| Tuck Construction Management Limited | Construction | 2021 |
| Tudor (Maidstone) Management Company Limited | Real estate | 1990 |
| Tudor Chemicals Limited | Manufacturing | 1999 |
| Tudor Living Ltd | Construction | 2018 |
| Tudor Oak Kent Trading AS C.R. Foreman Ltd | Wholesale & retail | 1970 |
| Tuftbox Ltd | Wholesale & retail | 2022 |
| Tulip Brighton Limited | Hospitality | 2004 |
| Tunbridge Wells Mental Health Resource Limited | Health & social care | 1993 |
| Tundra Care Ltd | Health & social care | 2018 |
| Tunka Estates Limited | Real estate | 2018 |
| Tunken Limited | Professional & scientific | 2013 |
| Tunnel and Excavation Engineering Limited | Professional & scientific | 2007 |
| Turner Building Services (Kent) Ltd | Construction | 2005 |
| Turqusine Ltd | Hospitality | 2025 |
| Tutor Brittain Limited | Education | 2011 |
| Tutor in Maidstone Ltd | Education | 2018 |
| Tutsirai PVT Limited | Health & social care | 2012 |
| Tvsv Limited | Financial services | 2024 |
| TVU Holdings Ltd | Professional & scientific | 2014 |
| TW 24/7 Cars Ltd | Transport & logistics | 2017 |
| TW Civils & Surfacing Limited | Construction | 2024 |
| TWC Financial Limited | Financial services | 2021 |
| Twenty Degrees Limited | Administrative & support | 1999 |
| Twgraphics Ltd | Information & communication | 2023 |
| Twigs and Twine Dried Florals Ltd | Arts & recreation | 2024 |
| Twinline Construction Ltd | Construction | 2024 |
| Twinn Build Limited | Construction | 2023 |
| Twister Print Ltd | Manufacturing | 2022 |
| TWJ Wealth Management Limited | Professional & scientific | 2021 |
| TWM Golf Limited | Education | 2014 |
| Twnty Sixth AVE Ltd | Wholesale & retail | 2025 |
| Two Consultancy Ltd | Professional & scientific | 2022 |
| Two Lions Yalding Limited | Hospitality | 2026 |
| Two Pixels Web Management Ltd | Information & communication | 2020 |
| Two Trees Development Ltd | Construction | 2013 |
| Twovics Services Ltd | Construction | 2016 |
| TWR Consulting Ltd | Administrative & support | 2018 |
| TWV Consulting Ltd | Professional & scientific | 2022 |
| Twyford Marine Limited | Arts & recreation | 2007 |
| TY NI Consulting Ltd | Professional & scientific | 2010 |
| Tychon Property Ltd | Real estate | 2026 |
| Tycio (Holdings) Limited | Information & communication | 2008 |
| TYE Palmer Electricity Services Ltd | Construction | 2021 |
| Tyland Mews Management Company Limited | Households | 2019 |
| Tylers 4 Ltd | Water & waste | 2004 |
| Tyndall Properties Limited | Real estate | 2017 |
| Tyre Solutions UK (Kent) Limited | Wholesale & retail | 2025 |
| Tyrepoint Services Ltd | Wholesale & retail | 2018 |
| Tyres & Servicing Ltd | Wholesale & retail | 2025 |
| Tyrolysis Limited | Water & waste | 2025 |
| TYS Transport Ltd | Transport & logistics | 2024 |
| Tyson UK Finance Limited | Financial services | 2021 |
| TZ Heating Ltd | Construction | 2013 |
| Tz-Commerce Ltd | Wholesale & retail | 2025 |
| TZJ Properties Ltd | Real estate | 2021 |
| U&Afoods Limited | Wholesale & retail | 2018 |
| Ubique Properties Limited | Construction | 2020 |
| Ubiquitous Events Ltd | Administrative & support | 2015 |
| Ubisecure Holdings Limited | Other services | 2016 |
| Ubisecure Limited | Information & communication | 2016 |
| Ubox IT Limited | Administrative & support | 2023 |
| UCD Warriors Ltd | Professional & scientific | 2022 |
| Uchly Consults Ltd | Professional & scientific | 2021 |
| Udio Limited | Financial services | 2017 |
| Uglea Services Limited | Construction | 2022 |
| UK Awards Limited | Education | 2019 |
| UK Bumpers Limited | Wholesale & retail | 2018 |
| UK Cctv Solution Ltd | Construction | 2025 |
| UK Drainage Recruitment Services Ltd | Administrative & support | 2025 |
| UK Drylining Ltd | Construction | 2023 |
| UK Engineering Plant Services Limited | Manufacturing | 2016 |
| UK Land Investors (Magham Down) Ltd | Construction | 2022 |
| UK Land Investors (Newington) Ltd | Construction | 2022 |
| UK Land Investors Wittersham Ltd | Construction | 2021 |
| UK Leadwork Limited | Administrative & support | 2017 |
| UK Metals Limited | Water & waste | 2019 |
| UK Planning and Development Services Limited | Financial services | 2019 |
| UK Project Managers Limited | Administrative & support | 2017 |
| UK Representative Services Limited | Administrative & support | 2020 |
| UK RS Flooring Ltd | Construction | 2023 |