| Total Machining Solutions Holdings Ltd | Financial services | 2025 |
| Total Machining Solutions Ltd | Manufacturing | 2010 |
| Total Parking & Lifting Solutions Limited | Administrative & support | 2002 |
| Total Reflection Limited | Public administration | 2025 |
| Total Test MOT Centre Ltd | Wholesale & retail | 2023 |
| Totalcure Limited | Professional & scientific | 2024 |
| Tower 12 Financial Services Ltd | Financial services | 2022 |
| Towervista Ltd | Administrative & support | 2014 |
| Townend Electrical Services Ltd | Manufacturing | 2022 |
| Towngate Properties Limited | Financial services | 2003 |
| Towns and Country Developments Ltd | Construction | 2025 |
| Trac N Steer Ltd | Wholesale & retail | 2019 |
| Trade Flooring Supplies Ltd | Wholesale & retail | 2023 |
| Trade Force Construction Ltd | Construction | 2026 |
| Trade Hub Direct Ltd | Wholesale & retail | 2017 |
| Trade Mark (UK) Ltd | Construction | 2011 |
| Trade Signs and Lighting Maintenance Limited | Manufacturing | 2013 |
| Tradex Financial Ltd | Education | 2025 |
| Trading Legal Services Limited | Professional & scientific | 2019 |
| Traditional Turkish Barbers Rochester Ltd | Other services | 2025 |
| Traditional Wing Chun Academy Chuen Ltd | Arts & recreation | 2011 |
| Trailblazer Talent Network Ltd. | Professional & scientific | 2025 |
| Train 2 Protect (T2P) International Limited | Other services | 2003 |
| TRAIN2PROTECT Limited | Extraterritorial | 2008 |
| Trainedbyajd Ltd | Health & social care | 2022 |
| Training Tank Limited | Education | 2015 |
| Trakforce Ltd | Construction | 2017 |
| Trakz Finance Limited | Other services | 2017 |
| Trans Andre Ltd | Transport & logistics | 2015 |
| Transformation Works Emea Ltd | Information & communication | 2023 |
| Transformers Activity Ltd | Transport & logistics | 2020 |
| Transnordic Limited | Manufacturing | 1970 |
| Transofi Limited | Construction | 2021 |
| Transparent Technologies Ltd | Information & communication | 2009 |
| Trattoria Raffaele Ltd | Hospitality | 2017 |
| Travel Dubz Ltd | Administrative & support | 2025 |
| Travis RIO Environmental Operations Ltd | Administrative & support | 2025 |
| Treasure House Services Ltd | Administrative & support | 2024 |
| Treesurge Ltd | Agriculture & fishing | 2022 |
| Treeventures Limited | Administrative & support | 2006 |
| Trekgom Limited | Wholesale & retail | 2025 |
| Tremma Ventures Limited | Professional & scientific | 2008 |
| Tres Tria Limited | Information & communication | 2004 |
| Tribe Bar & Restaurant Limited | Hospitality | 2026 |
| Tribe Rochester Limited | Hospitality | 2026 |
| Tricore Technologies Ltd | Information & communication | 2026 |
| Trident Cleaning Solutions Ltd | Administrative & support | 2024 |
| Trifectafix Maintenance Ltd | Real estate | 2024 |
| Trigon Games Ltd | Wholesale & retail | 2026 |
| Trinity Asphalt Limited | Construction | 2021 |
| Trinity Club Limited | Wholesale & retail | 2020 |
| Trinity Exports Limited | Information & communication | 2004 |
| Trinity Highways Limited | Construction | 2021 |
| Trinity Spectrum London Ltd | Wholesale & retail | 2026 |
| Trinity Surfacing Group Limited | Professional & scientific | 2023 |
| Trinity Surfacing Ltd | Construction | 2018 |
| Triple-I Services Limited | Information & communication | 2022 |
| Tripod Investment Ltd | Real estate | 2021 |
| Trivett Mechanical Limited | Extraterritorial | 2015 |
| Trojan Mentorship Program CIC | Education | 2026 |
| TRU Nature Wellness Ltd | Wholesale & retail | 2025 |
| True Air Ltd | Construction | 2020 |
| Trugas Ltd | Construction | 2026 |
| Trust My VPN Limited | Professional & scientific | 2017 |
| Trusted GAS Services Kent Limited | Construction | 2016 |
| Trusted Recruiter Limited | Administrative & support | 2015 |
| Trusty Education Limited | Education | 2024 |
| Trusty Trees Commercial Limited | Administrative & support | 2024 |
| Trusty Trees Limited | Administrative & support | 2020 |
| TS Smart Property Limited | Real estate | 2026 |
| Tsatsar Transport Ltd | Transport & logistics | 2017 |
| TSK Roadways Ltd | Transport & logistics | 2025 |
| TSV Contracts Ltd | Administrative & support | 2021 |
| Tsvtransport Group Ltd | Transport & logistics | 2020 |
| Ttny Capital Ltd | Real estate | 2025 |
| TTS Employee Trustees Limited | Administrative & support | 2022 |
| Tudor Farm Estates Limited | Real estate | 2006 |
| Tudor Oak Carpentry Ltd | Construction | 2011 |
| Tudor Oak Carpentry South East Limited | Construction | 2021 |
| Tufflek-Cera Limited | Manufacturing | 2015 |
| Tuition Academy (Rochester) Limited | Education | 2012 |
| Tuition Plus Ltd | Education | 2020 |
| Tumtam Healthcare Ltd | Health & social care | 2023 |
| Tunthem Ltd | Information & communication | 2016 |
| Turner (Kent) Ltd | Wholesale & retail | 2021 |
| Turner Environmental Services Limited | Water & waste | 2024 |
| Turners & SON Ltd | Transport & logistics | 2020 |
| Turnkey Surveying Limited | Professional & scientific | 2011 |
| Turtle Bale Limited | Administrative & support | 2014 |
| Tutu Decorations Ltd | Construction | 2018 |
| Twenty Four Enterprises Limited | Wholesale & retail | 2015 |
| Twice AS Nice Catering Limited | Hospitality | 2011 |
| Twinspark Electrical Ltd | Manufacturing | 2024 |
| Twist and Pulse Limited | Arts & recreation | 2010 |
| Two Karats Ltd | Wholesale & retail | 2025 |
| TWP Specialist Limited | Construction | 2021 |
| TWS Consultancy Ltd | Administrative & support | 2006 |
| Typhoid Foundation | Health & social care | 2025 |
| Tyson Software Ltd | Information & communication | 2022 |
| U-Blink Limited | Real estate | 2015 |