| Tonio’S Pizzeria Ltd | Hospitality | 2025 |
| Tony Conway Ltd | Construction | 2010 |
| Top-Notch Accountants Limited | Professional & scientific | 2017 |
| Topbond PLC | Construction | 1975 |
| Topsurv Limited | Construction | 2012 |
| Torry Hill Chestnut Fencing Limited | Manufacturing | 2011 |
| Total Alpha Security Ltd | Administrative & support | 2020 |
| Total Crane Services Limited | Administrative & support | 2002 |
| Total Landscapes Limited | Professional & scientific | 2007 |
| Toy and Model Store Limited | Wholesale & retail | 2015 |
| TPS Building Services Ltd | Construction | 2004 |
| Trad Clad Roofing Ltd | Construction | 2022 |
| Trade Master Pro Limited | Construction | 2024 |
| Trade Systems Consultancy Ltd | Information & communication | 2026 |
| Traditional Building Supplies Ltd | Construction | 2013 |
| Train Verification Services Limited | Professional & scientific | 2009 |
| TRAIN2EVOLVE Limited | Administrative & support | 2016 |
| Trans Liviu Ltd | Transport & logistics | 2020 |
| Transcend Group Limited | Professional & scientific | 2014 |
| Transglobal Shipping & Transport Limited | Transport & logistics | 2025 |
| Transport & Storage Ltd | Transport & logistics | 2023 |
| Trantiers Services Limited | Wholesale & retail | 2014 |
| Travelguardtrustee Limited | Information & communication | 2017 |
| Trbe Limited | Wholesale & retail | 2022 |
| Treat Natural (Pet Food) Limited | Extraterritorial | 2018 |
| Tremain & Sons Group Ltd | Construction | 2019 |
| Trenada Ltd | Hospitality | 2023 |
| Trendicom Ltd | Wholesale & retail | 2017 |
| Trendy Vision Investment Ltd | Other services | 2020 |
| Treolla Limited | Manufacturing | 2021 |
| Trevor Bowerman Property Maintenance Limited | Real estate | 2007 |
| Trevor Bowerman Property Management Limited | Real estate | 2002 |
| TRH Management Ltd | Professional & scientific | 2021 |
| Tri-Mech Ltd | Construction | 2021 |
| Triad Timber Components Limited | Manufacturing | 1971 |
| Triglyph Property Consultants Limited | Professional & scientific | 2007 |
| Trilogy Healthcare (Kent) Limited | Health & social care | 2016 |
| Trilogy Healthcare Limited | Health & social care | 2015 |
| Trinco Medical Services Limited | Health & social care | 2013 |
| Trinity (Essex) Ltd | Professional & scientific | 2005 |
| Trinity Caterers Ltd | Hospitality | 2023 |
| Trinity Fencing CIC | Construction | 2014 |
| Triple a Events Ltd | Administrative & support | 2014 |
| Triple J Scaffolding (South East) Ltd | Construction | 2014 |
| Triple M Ventures Ltd | Wholesale & retail | 2025 |
| Triple Routes Logistics Ltd | Transport & logistics | 2025 |
| TRIPLE8 Engineering Ltd | Professional & scientific | 2018 |
| TRM Aero Engineering Limited | Manufacturing | 2025 |
| TRM Property Limited | Households | 2025 |
| Trojan Construction and Project Management Limited | Construction | 2021 |
| Trojan Flooring Ltd | Other services | 2017 |
| Tropicalgate Finance PLC | Wholesale & retail | 2018 |
| Truck Skill Limited | Professional & scientific | 2024 |
| True Companions Care Limited | Health & social care | 2025 |
| True Nutrition Ltd. | Wholesale & retail | 2025 |
| Truly Kentish Holiday Lets Limited | Hospitality | 2022 |
| Trustbridge Academy Ltd | Education | 2016 |
| TRY ME Limited | Transport & logistics | 2007 |
| TTA Tower Bridge Taekwondo Limited | Arts & recreation | 2024 |
| TTD Logistics Ltd | Wholesale & retail | 2025 |
| Ttym CIC | Administrative & support | 2026 |
| Tubz Brands Limited | Manufacturing | 2009 |
| Tuck Inn Cafe Limited | Hospitality | 2016 |
| Tudor Logistics Ltd | Transport & logistics | 2021 |
| Turner Roof Windows Ltd. | Construction | 2016 |
| Turning Point Funding Solutions Limited | Information & communication | 2017 |
| Turnshire Transport Limited | Information & communication | 1976 |
| TW Cooling Ltd | Construction | 2020 |
| TW Cooling Services Ltd | Manufacturing | 2024 |
| Twinney Wharf Limited | Administrative & support | 2004 |
| Type R Management Limited | Professional & scientific | 2024 |
| Tyzumariuscezar Ltd | Transport & logistics | 2025 |
| TZ Food Store Limited | Hospitality | 2025 |
| U.K. Battery Sales Limited | Wholesale & retail | 2002 |
| UHY Kent LLP | | 2010 |
| UK Branding Ltd | Professional & scientific | 2024 |
| UK CARS89 Ltd | Wholesale & retail | 2025 |
| UK Fish and Chips Limited | Hospitality | 2025 |
| UK Land Investors Kemsley Ltd | Real estate | 2019 |
| UK Land Investors Limited | Real estate | 2019 |
| UK Land Investors Wheatsheaf Ltd | Real estate | 2019 |
| UK Mini Spares Ltd | Wholesale & retail | 2023 |
| UK Sign Shop Limited | Professional & scientific | 2014 |
| UKT Consultancy Limited | Information & communication | 2018 |
| Uktaxpayers Limited | Professional & scientific | 2019 |
| Ultimate Cravings Ltd | Hospitality | 2021 |
| Ultimate Edge Limited | Wholesale & retail | 2017 |
| Ultimate Landscaping (South East) Ltd | Construction | 2026 |
| Ultra M&E Ltd | Construction | 2023 |
| Umayan Limited | Real estate | 2025 |
| Umdasch Real Estates (UK) Ltd | Real estate | 2017 |
| Umoja Publishing Limited | Information & communication | 2025 |
| UNAIUCA77 Limited | Transport & logistics | 2017 |
| Undiscoveredcampers (UDC) Ltd | Manufacturing | 2026 |
| Undisputed Sports Ltd | Other services | 2021 |
| Unicorn Automobiles Limited | Wholesale & retail | 2015 |
| Unipet Holdings Limited | Financial services | 2017 |
| Unipet International Limited | Manufacturing | 1993 |
| Unique Property and Financial Services Ltd | Financial services | 2023 |
| Unique Stays Property Ltd | Real estate | 2025 |