| Tarrimond Properties Limited | Construction | 2022 |
| Tart Modern Limited | Hospitality | 2018 |
| Tasb Care Recruitment Ltd | Administrative & support | 2019 |
| Taste Revelation Foods Limited | Hospitality | 2021 |
| Tatanium Service Limited | Other services | 2018 |
| Tavis Barnes Limited | Wholesale & retail | 2007 |
| Tavt Homes Ltd | Real estate | 2024 |
| Tawakal Properties Ltd | Real estate | 2022 |
| Tawanda Group Ltd | Professional & scientific | 2015 |
| Tawanda Ltd | Wholesale & retail | 2021 |
| Tax Code Ltd | Professional & scientific | 2023 |
| Taxure Accountants Ltd | Professional & scientific | 2025 |
| Taybis Healthcare Ltd | Other services | 2016 |
| Taylor Floristry Ltd | Wholesale & retail | 2025 |
| Taylor Page Surface Care Ltd | Manufacturing | 2025 |
| Tazino Limited | Professional & scientific | 2018 |
| TB Brickwork Solutions Limited | Construction | 2021 |
| TB Charis Ltd | Public administration | 2022 |
| TBK Properties Ltd | Real estate | 2025 |
| TC Project Management Limited | Construction | 2013 |
| TCG Services Ltd | Administrative & support | 2026 |
| TCH Industrial Holdings Ltd. | Construction | 2018 |
| TCS Fitness Limited | Health & social care | 2015 |
| Tcsa Management Ltd | Real estate | 2023 |
| Tcube Limited | Wholesale & retail | 2020 |
| TD Lifestyle 1802 Limited | Arts & recreation | 2018 |
| Tdere Limited | Wholesale & retail | 2020 |
| TDI Service - Gasperowicz Ltd | Transport & logistics | 2017 |
| TDS Cleanse Limited | Water & waste | 2025 |
| Tea for Tutu Ltd | Hospitality | 2021 |
| Tea Social Ltd | Information & communication | 2009 |
| Team Ascend Limited | Arts & recreation | 2025 |
| Team Lifting Services Ltd | Professional & scientific | 2021 |
| Team Pickles Limited | Information & communication | 2017 |
| Team Surtees Limited | Extraterritorial | 1965 |
| Teamg Enterprise Ltd | Wholesale & retail | 2019 |
| Techmatch Solutions Ltd | Administrative & support | 2026 |
| Techmeisters Limited | Construction | 2023 |
| Technica Graphics Ltd | Manufacturing | 2026 |
| Techsphere Software Ltd | Information & communication | 2024 |
| Teckwik Limited | Information & communication | 2024 |
| TED Carpentry Ltd | Construction | 2017 |
| Teechic Limited | Health & social care | 2019 |
| Teedee Ltd | Hospitality | 2021 |
| Teens&Peta's Recruitment Ltd | Real estate | 2023 |
| Teesunshinensmilez Limited | Health & social care | 2023 |
| Teetop Services Limited | Health & social care | 2016 |
| Teichert & Sons Ltd | Construction | 2021 |
| TEJ Store Ltd | Real estate | 2022 |
| Tekihealth Solutions Ltd | Health & social care | 2018 |
| Tel-Tec Limited | Wholesale & retail | 1989 |
| Telekom Assist Limited | Wholesale & retail | 1998 |
| Telewaw Ltd | Information & communication | 2017 |
| Temick Limited | Manufacturing | 2014 |
| Temperate Heating Limited | Wholesale & retail | 1984 |
| Temperate Holdings Ltd | Financial services | 2026 |
| Temple of Kulture CIC | Administrative & support | 2023 |
| Temple Production Studio Ltd | Professional & scientific | 2025 |
| Templecreek Investment Limited | Real estate | 2025 |
| TEN 10 Investment Group Limited | Wholesale & retail | 2025 |
| Teroso Ltd | Other services | 2010 |
| Terra Radah Technologies Ltd | Information & communication | 2025 |
| Terry Watkins Research Limited | Professional & scientific | 2002 |
| Test Carpentry Contractors Limited | Construction | 2010 |
| Tester Motorsport Limited | Education | 2025 |
| Tey's Restaurants Limited | Administrative & support | 1989 |
| Teynham Utilities Limited | Construction | 2011 |
| TFS Transport Ltd | Transport & logistics | 2022 |
| TG Print & Design Ltd | Manufacturing | 2009 |
| Thai Chida Massage Ltd | Health & social care | 2025 |
| Thames Gateway Services Ltd | Construction | 2025 |
| Thames Hose and Couplings Holdings Limited | Financial services | 2020 |
| Thames Hose and Couplings Limited | Administrative & support | 1988 |
| Thames Surfacing Limited | Construction | 2004 |
| Thameside Windows & Glass Limited | Administrative & support | 2005 |
| Thanet International Limited | Administrative & support | 1992 |
| THE A2 Insurance Centre Limited | Financial services | 2004 |
| THE Accounts Lady Limited | Extraterritorial | 2019 |
| THE Akinyemis Limited | Administrative & support | 2025 |
| THE Alexandra Limited | Hospitality | 2019 |
| THE Aluminium Louvre Company Limited | Construction | 2009 |
| THE Archer Public House Ltd | Hospitality | 2024 |
| THE Arena Grill and Lounge Ltd | Hospitality | 2022 |
| THE Association of Retirement Housing Managers | Households | 1991 |
| THE Banks Collective Ltd | Other services | 2023 |
| THE BEE Kind Wellbeing Project CIC | Health & social care | 2026 |
| THE Big Chill House Limited | Real estate | 2010 |
| THE Bigger Picture (Art History) Limited | Education | 2012 |
| THE Bipoc Bookcase Ltd | Education | 2020 |
| THE Black (AM) Company Limited | Real estate | 2019 |
| THE Black Art Hub CIC | Professional & scientific | 2024 |
| THE Bluebell MAT | Education | 2026 |
| THE Bohemian Group Limited | Hospitality | 2026 |
| THE Boss Dreams Code Ltd | Wholesale & retail | 2020 |
| THE Bulldog MUM Ltd | Other services | 2026 |
| THE Cabin Apparel Ltd | Wholesale & retail | 2025 |
| THE Captains of Legend Ltd | Information & communication | 2022 |
| THE Card Shack Kent Ltd | Wholesale & retail | 2025 |
| THE Challenging Behaviour Foundation | Information & communication | 1997 |
| THE Childrens Healthy Food Company Ltd | Manufacturing | 2014 |