| Takahe Consulting Limited | Professional & scientific | 2016 |
| Take Flight Academy Musical Theatre Ltd | Arts & recreation | 2024 |
| Take Heart Mercy Mission | Health & social care | 2011 |
| TAKE4D Limited | Professional & scientific | 2016 |
| Takhar UK Limited | Wholesale & retail | 2004 |
| TAL Investments Group Limited | Professional & scientific | 2014 |
| TAL Investments Limited | Real estate | 1960 |
| TAL Residential Property Investments Ltd | Real estate | 2021 |
| Tale Digital Limited | Professional & scientific | 2014 |
| Talenta Capital LLP | | 2009 |
| Talismard Holdings Limited | Financial services | 2020 |
| Talismard Properties Limited | Real estate | 1996 |
| Talk Languages Limited | Professional & scientific | 2003 |
| Tamarisk Gardens Limited | Real estate | 2009 |
| TAN 90 Limited | Extraterritorial | 2009 |
| Tanbridge Ltd | Other services | 2023 |
| Tandem Events Limited | Administrative & support | 2005 |
| Tandem Medical Ltd | Health & social care | 2019 |
| Tandem SET and Scenery Ltd | Construction | 2014 |
| Tangerine Communications Limited | Professional & scientific | 2016 |
| Tango Books Limited | Information & communication | 1983 |
| Tapcom (International) Limited | Professional & scientific | 2014 |
| Tape Rewards | Real estate | 2022 |
| Tara Kari Ltd | Manufacturing | 2024 |
| Target on Ltd | Transport & logistics | 2024 |
| Target Plastics (EP) Limited | Manufacturing | 2012 |
| Tarki Ltd | Real estate | 2024 |
| Tatlingbury Farm Management Ltd | Households | 2022 |
| Tatty Bumpkin Ltd | Wholesale & retail | 2004 |
| Taxacc Solutions Ltd | Professional & scientific | 2009 |
| Tayclad Limited | Construction | 2018 |
| Tayeast Investments Limited, | Real estate | 1963 |
| Taywell Ice Creams Limited | Manufacturing | 2006 |
| TBB Pack Ltd | Administrative & support | 2020 |
| Tcws Limited | Information & communication | 2005 |
| TDA Upper Limb Ltd | Health & social care | 2023 |
| TDB Hygiene Services Ltd | Health & social care | 2022 |
| Teal People Ltd | Professional & scientific | 2019 |
| Team Dynamics International Limited | Other services | 1985 |
| Team Dynamics Limited | Professional & scientific | 1994 |
| Team Four Star Electrical Ltd | Construction | 2023 |
| Teasdale Construction Ltd | Construction | 2023 |
| TEC Advance Limited | Professional & scientific | 2022 |
| Tech Optics Limited | Wholesale & retail | 2008 |
| Techibods UK Ltd | Information & communication | 2017 |
| Technical Site Services Ltd | Construction | 2026 |
| Technocrat Consultants Limited | Information & communication | 2019 |
| Technomak Modular Building UK Ltd | Manufacturing | 2025 |
| Techsharp Ltd | Other services | 2015 |
| Techspace Movements Ltd | Administrative & support | 2025 |
| Tectonic Construction Limited | Construction | 2012 |
| Tees Valley Property Partners Ltd | Real estate | 2024 |
| Teflon Property Improvements South East Ltd | Construction | 2025 |
| Tekra Limited | Professional & scientific | 2024 |
| Tektonik Marketing Ltd | Professional & scientific | 2024 |
| Telamon Consultants Ltd | Professional & scientific | 2022 |
| Temperance Beverages Ltd | Wholesale & retail | 2025 |
| TEN Yards Limited | Financial services | 2023 |
| TEN4 Property Solutions Limited | Real estate | 2014 |
| Tenterden Railway Equipment and Traction Company Limited | Manufacturing | 1993 |
| Tents Direct Limited | Arts & recreation | 2016 |
| Terrain Designs Limited | Administrative & support | 2021 |
| Teta Consultancy Limited | Professional & scientific | 2026 |
| TFC Pots Limited | Administrative & support | 2017 |
| TFS Foods Limited | Hospitality | 2015 |
| Tfwm Ltd | Health & social care | 2023 |
| TG Technical Solutions Ltd | Information & communication | 2026 |
| TGN Homes Ltd | Real estate | 2025 |
| Thaxted Health Limited | Health & social care | 2025 |
| THC Leisure Ltd | Health & social care | 2023 |
| THE Active Body Studio Ltd | Arts & recreation | 2010 |
| THE Agency Solution Limited | Hospitality | 2016 |
| THE Albion Coaching Inn Limited | Hospitality | 2024 |
| THE App Brewery Ltd | Information & communication | 2023 |
| THE Argonaut Partnership LLP | | 2002 |
| THE Argonaut Retail Limited | Administrative & support | 2010 |
| THE Artful Project Limited | Administrative & support | 2013 |
| THE Attributionco Limited | Information & communication | 2024 |
| THE BAG Broker UK Limited | Administrative & support | 2017 |
| THE Barefoot Welder Ltd | Construction | 2014 |
| THE BBQ Hub Ltd | Wholesale & retail | 2024 |
| THE Bellbrook Enterprise Centre Ltd | Real estate | 2021 |
| THE Bigwood Partnership Limited | Professional & scientific | 2020 |
| THE Bimbling Barrel Ltd | Wholesale & retail | 2023 |
| THE Birchden Partnership LLP | | 2002 |
| THE Black Lodge Gaming Ltd | Professional & scientific | 2021 |
| THE Blood Care Foundation | Health & social care | 1991 |
| THE Boiler MAN Services Ltd | Construction | 2008 |
| THE Boxd Office Ltd | Transport & logistics | 2025 |
| THE Brew Eagle House Limited | Real estate | 2013 |
| THE Brew Partnership LLP | | 2011 |
| THE Brew Spaces Limited | Real estate | 2011 |
| THE Brew Westland Place Ltd | Real estate | 2018 |
| THE Bridge TN CIC | Hospitality | 2025 |
| THE Bridge Trust Corporation | Hospitality | 1995 |
| THE Brilliant Car Cleaning Company Limited | Other services | 2007 |
| THE Business Golf Network Ltd | Administrative & support | 2012 |
| THE Buss Clinic Limited | Health & social care | 2026 |
| THE Butch Clothing Company Ltd | Manufacturing | 2009 |
| THE Candy Cane Bakery Limited | Manufacturing | 2013 |