| Timbosite Limited | Construction | 2025 |
| Timeless Homes Limited | Construction | 2008 |
| Timm Trading Ltd | Construction | 2017 |
| Tinamar Limited | Transport & logistics | 2019 |
| Tinashe Legacies Limited | Real estate | 2023 |
| Tinsley Court RTM Company Limited | Households | 2017 |
| Tiwaris Property Limited | Households | 2022 |
| TJM Electrics Limited | Energy | 2019 |
| TKM Designs Limited | Construction | 2025 |
| TLG Decorators Ltd | Construction | 2022 |
| Toast Office Pubs Ltd | Hospitality | 2025 |
| Tofly Limited | Manufacturing | 2006 |
| Toiof Consultancy Ltd | Professional & scientific | 2017 |
| Tonbridge Riverside Regeneration Limited | Real estate | 2018 |
| Toni Services Ltd | Wholesale & retail | 2016 |
| Top Transfers Ltd | Wholesale & retail | 2017 |
| Total Relocation Services Limited | Water & waste | 2012 |
| Totally Solid Ltd | Manufacturing | 2020 |
| Touchwood Concepts Limited | Construction | 2019 |
| Touchwood Lifts Ltd | Professional & scientific | 2021 |
| Tourlux UK Limited | Administrative & support | 2015 |
| Tradazo Limited | Information & communication | 2025 |
| Tradeacar Ltd | Professional & scientific | 2011 |
| Tradex Services Limited | Health & social care | 2004 |
| Traintech Limited | Professional & scientific | 2001 |
| Transform Computing Limited | Information & communication | 1980 |
| Transport Advisers Limited | Transport & logistics | 2014 |
| Transport Operations Consultants Ltd | Transport & logistics | 2018 |
| Treat-Re-Treat Beauty Ltd | Other services | 2022 |
| Tree of Ages Events Ltd | Administrative & support | 2023 |
| Trevowhan Limited | Information & communication | 2006 |
| Triangle Coaches Limited | Other services | 2017 |
| Trilobyte Designs Limited | Professional & scientific | 1994 |
| Trim and Proper Gardens Ltd | Administrative & support | 2025 |
| Trimist Limited | Professional & scientific | 2002 |
| Trinity Europe Limited | Information & communication | 2008 |
| Trinity OT Security Limited | Administrative & support | 2021 |
| Trinity Trees Finance Ltd | Financial services | 2024 |
| Triple S Motor Cycles Limited | Wholesale & retail | 2012 |
| Trippy Ltd | Wholesale & retail | 2023 |
| Trophy DMS Limited | Professional & scientific | 2019 |
| Truenorth Data Consulting Ltd | Professional & scientific | 2025 |
| Trusted Referrals Group Limited | Administrative & support | 2019 |
| Tubeform Limited | Manufacturing | 2013 |
| Tuffs Group Ltd | Administrative & support | 2019 |
| Tugboat Films Limited | Information & communication | 2013 |
| Tumpies Ltd | Real estate | 2017 |
| Tunbol Health Care Services Limited | Wholesale & retail | 2023 |
| Tunbridge Freehold Limited | Real estate | 2014 |
| Turquoise Creative Limited | Information & communication | 2008 |
| Tushima Print Limited | Manufacturing | 2007 |
| TW Groundwork and Construction Ltd | Construction | 2022 |
| Two Circles Design Ltd | Professional & scientific | 2023 |
| Two Roots Creative Ltd | Professional & scientific | 2013 |
| Two Suits Media Limited | Information & communication | 2015 |
| TYM Huckin Ltd | Information & communication | 2015 |
| Tynan Skips Ltd | Water & waste | 2024 |
| Tyro Films and Television Limited | Information & communication | 1994 |
| Tyrrell Promotions Limited | Arts & recreation | 1978 |
| U & K Commercial Ltd | Real estate | 2022 |
| Uinternet Ltd | Information & communication | 2006 |
| UK Cruc-Ible Ltd | Professional & scientific | 2024 |
| UK Itex Services Limited | Information & communication | 2014 |
| UK Property Real Estate Ltd | Real estate | 2021 |
| UK Scent Shop Ltd | Wholesale & retail | 2020 |
| Unclocks Ltd. | Information & communication | 2023 |
| Unikon Build Ltd | Construction | 2024 |
| Union Jack Cleaning Services Limited | Administrative & support | 2025 |
| United Kingdom Darts Association Ltd | Arts & recreation | 2020 |
| Universal Contract Services Ltd | Administrative & support | 2024 |
| Untamed Marketing Limited | Professional & scientific | 2020 |
| Urban Hub Properties Ltd | Real estate | 2017 |
| Urban Space Plumbing Limited | Construction | 2015 |
| V Coparts Ltd | Wholesale & retail | 2025 |
| V Realty Ltd | Real estate | 2024 |
| V2 Fusion Ltd | Hospitality | 2025 |
| Vale Aero Services Limited | Information & communication | 1982 |
| Valladale Construction Limited | Construction | 1974 |
| Vanbrugh Associates Ltd | Financial services | 2015 |
| Vara Bros. Ltd | Real estate | 2025 |
| Varihost Ltd | Information & communication | 2000 |
| VCL Events Ltd | Administrative & support | 2026 |
| VDS Performance Ltd | Wholesale & retail | 2019 |
| Verraux Lois Limited | Professional & scientific | 2025 |
| Verse Architecture Ltd | Professional & scientific | 2025 |
| Vertex Accountancy Limited | Administrative & support | 2016 |
| Very Bettie Ltd | Other services | 2016 |
| Victor Gache Horse Transport Limited | Agriculture & fishing | 2011 |
| Victoria Road Horley Limited | Real estate | 2019 |
| Victoria Spice Ltd | Hospitality | 2019 |
| Vigilance Consulting Limited | Professional & scientific | 2024 |
| Vincent Edwards Estates Limited | Real estate | 2020 |
| Vinoj Brothers Ltd | Wholesale & retail | 2024 |
| VIP Gatwick Limited | Transport & logistics | 2016 |
| Virtual Hope Ltd | Administrative & support | 2022 |
| Viscad Ltd | Professional & scientific | 2007 |
| Vision (UK) Limited | Financial services | 2005 |
| Vision Online Ltd | Information & communication | 2005 |
| Vision UK Holdings Limited | Real estate | 2023 |
| Vita Gear Limited | Wholesale & retail | 2019 |