| T & N Browne UK LLP | | 2012 |
| T & O Property Group Ltd | Real estate | 2026 |
| T D Claridge Plumbing & Heating Limited | Construction | 2016 |
| T Kitchen Consulting Ltd | Information & communication | 2021 |
| T Rose Limited | Health & social care | 2010 |
| T Team Limited | Education | 2012 |
| T Wells Joinery Ltd | Construction | 2023 |
| T Wells Taxi Ltd | Transport & logistics | 2019 |
| T&G Electrics (TW) Ltd | Construction | 2015 |
| T&S Consulting Ltd | Information & communication | 2024 |
| T&T Private Limited | Wholesale & retail | 2015 |
| T-Stats Solutions Limited | Administrative & support | 2010 |
| T. Alexander Ltd | Wholesale & retail | 2015 |
| T. Taylor Solutions Limited | Professional & scientific | 2007 |
| T.A.L Consultancy Limited | Professional & scientific | 2009 |
| T.E.K Military LLP | | 2011 |
| T.E.K. Military Seating Limited | Manufacturing | 2021 |
| T.Hall Roofing Ltd | Construction | 2026 |
| T.W Lettings Limited | Real estate | 2004 |
| T.Wells Removals & Transport Ltd | Transport & logistics | 2018 |
| T3 Limited | Professional & scientific | 1998 |
| T3B Selfstorage Limited | Information & communication | 2022 |
| Tabooboo Ltd | Extraterritorial | 2006 |
| Tacet Labs Ltd | Information & communication | 2012 |
| Tachodisc Distribution UK Limited | Wholesale & retail | 2016 |
| Tacit London Ltd | Professional & scientific | 2014 |
| Tactile Labs Ltd. | Information & communication | 2015 |
| TAD Planning Limited | Professional & scientific | 2011 |
| TAG 61 Ltd | Administrative & support | 2021 |
| Tailored Block Management Limited | Real estate | 2018 |
| Talent Consulting Limited | Information & communication | 2023 |
| Talent Network Group Limited | Administrative & support | 2015 |
| Talkactually Limited | Education | 2024 |
| Tall & Ginger Limited | Professional & scientific | 2014 |
| Tall Red Consulting Ltd | Information & communication | 2023 |
| Tall Trees (Bolnore) Residents Management Company Limited | Households | 2014 |
| Talos Limited | Information & communication | 1988 |
| Tamworth Foot Health Limited | Health & social care | 2025 |
| TAN Capital Limited | Financial services | 2023 |
| Tana Mediterranean Ltd | Wholesale & retail | 2025 |
| Tanchester Developments Limited | Construction | 1997 |
| Tandom Property LLP | | 2009 |
| Tania LOK Wuen Leung Limited | Professional & scientific | 2023 |
| Tankdev Limited | Construction | 2014 |
| Tanya Collis Ltd | Professional & scientific | 2014 |
| TAO Analytics International LLP | | 2010 |
| TAO Analytics Limited | Information & communication | 2005 |
| Tappz Cars Ltd | Transport & logistics | 2018 |
| Taptap Technologies Ltd | Information & communication | 2024 |
| Tara Power Ltd | Health & social care | 2020 |
| Target INK Limited | Information & communication | 2009 |
| Targetr Ltd | Information & communication | 2012 |
| Tarland House Management Company Limited | Households | 1993 |
| Tarn Investments Limited | Real estate | 2015 |
| Tasvik Limited | Information & communication | 2012 |
| Tavi Consulting Ltd | Professional & scientific | 2021 |
| Taxi Tunbridge Wells Limited | Transport & logistics | 2022 |
| Taxman in a Van Ltd | Real estate | 2025 |
| Taylor Brown Properties Ltd | Real estate | 2026 |
| Taylor Court (Tunbridge Wells) Limited | Households | 2012 |
| Taylor Legal Services Ltd | Professional & scientific | 2021 |
| TB Product Consulting Ltd | Professional & scientific | 2025 |
| TBP Shop UK Ltd | Wholesale & retail | 2023 |
| TC Properties Group Limited | Real estate | 2024 |
| TC Properties Group London Limited | Real estate | 2025 |
| TC Properties Group North East Limited | Real estate | 2025 |
| Tcal Services (Holdings) Limited | Financial services | 2023 |
| TCB Estate Ltd | Financial services | 2026 |
| TCC Group Services Limited | Professional & scientific | 2016 |
| TCF Ltd | Information & communication | 2026 |
| TCH Repairs Limited | Households | 2004 |
| TCS Landscapes Limited | Administrative & support | 2015 |
| Tcs&D Events Limited | Professional & scientific | 2018 |
| TCW Property Services Ltd | Construction | 2025 |
| Tdrake Consulting Ltd | Information & communication | 2018 |
| Team Absence Limited | Information & communication | 2016 |
| Team Prime Consulting Limited | Professional & scientific | 2011 |
| Team Storage Limited | Information & communication | 2011 |
| Teasdale (Properties) Limited | Professional & scientific | 2013 |
| Tech Buy UK Limited | Wholesale & retail | 2014 |
| Tech Edge Marketing Ltd | Professional & scientific | 2024 |
| Tech Mender Limited | Wholesale & retail | 2021 |
| Techhiro Limited | Information & communication | 2018 |
| Techloc and Communication Limited | Administrative & support | 2013 |
| Technical Materials Laboratory Ltd | Professional & scientific | 2021 |
| Technodyn Consulting Ltd | Information & communication | 2011 |
| Technology Leadership Consulting Ltd | Information & communication | 2024 |
| Technology Solutions 4 Travel LLP | | 2015 |
| Technopath Solutions Ltd | Information & communication | 2016 |
| Tedman Decorators Limited | Construction | 2002 |
| Tedxroyaltunbridgewells Limited | Administrative & support | 2018 |
| Tejveer Advisors Ltd | Professional & scientific | 2021 |
| Tekin Limited | Information & communication | 2013 |
| Tekla Fabrics Ltd | Wholesale & retail | 2023 |
| Teldar Travel Limited | Hospitality | 2019 |
| Televisual Media UK Limited | Professional & scientific | 2006 |
| Telham Estates Limited | Hospitality | 2023 |
| Telham Gates LLP | | 2012 |
| Teltech Limited | Information & communication | 2022 |
| Tembisa Investments Limited | Professional & scientific | 2022 |