| Thoughtify Ltd | Education | 2018 |
| Thread Wear Ltd | Wholesale & retail | 2024 |
| Three Cedar Road Freehold Company Limited | Extraterritorial | 2012 |
| Tiger Tunes Surrey Ltd | Arts & recreation | 2025 |
| TKL Services Ltd | Construction | 2025 |
| TLS Electrical Limited | Construction | 2009 |
| TNK Tech Ltd | Wholesale & retail | 2023 |
| Toby Garbett Limited | Arts & recreation | 2009 |
| Toby Garbett Mentoring Limited | Arts & recreation | 2021 |
| TOM Howard Garden Design & Landscaping Limited | Administrative & support | 2014 |
| TOM Rich Limited | Information & communication | 2009 |
| TOM Smith Consulting Ltd | Professional & scientific | 2025 |
| Toolbox Revolution Limited | Wholesale & retail | 2022 |
| Top to Tail Coulsdon Ltd | Other services | 2018 |
| Topclass Drives Patios Limited | Other services | 2019 |
| Topklas Group Limited | Administrative & support | 2021 |
| Topmarks Tyres Limited | Wholesale & retail | 2011 |
| Toriton Izakaya Limited | Hospitality | 2025 |
| Total Housing Group Limited | Real estate | 2025 |
| Totally Wired Property Limited | Real estate | 2024 |
| Town & Country Garden Rooms Ltd | Construction | 2021 |
| Town Barber Brighton RD Ltd | Other services | 2025 |
| Trade Fusion Group Ltd | Wholesale & retail | 2026 |
| Trafalgar Square Mgmt Ltd | Real estate | 2023 |
| Trafalgar Square Solutions Limited | Financial services | 2006 |
| Transaexis Services Limited | Public administration | 2024 |
| Transform 2 Fit Ltd | Other services | 2017 |
| Transpire Immigration Ltd | Professional & scientific | 2025 |
| Transpordt Limited | Transport & logistics | 2025 |
| Travel UNI Limited | Extraterritorial | 2003 |
| Trendic Ltd | Wholesale & retail | 2024 |
| Tri-Solutions Limited | Information & communication | 2004 |
| Trident Property Protection Limited | Construction | 2022 |
| Trimerle Consulting Limited | Professional & scientific | 2026 |
| Trinity Advisory Group Limited | Professional & scientific | 2026 |
| Trophy House Freehold Limited | Households | 2022 |
| Tsakistras Ltd | Administrative & support | 2016 |
| TT Accountancy Limited | Professional & scientific | 2022 |
| TT Ventures Ltd | Financial services | 2021 |
| TTE Investments Limited | Professional & scientific | 2025 |
| TVS Consultancy Limited | Information & communication | 2025 |
| Twinz Barber Studios Ltd | Other services | 2025 |
| Twinz Studios Limited | Other services | 2026 |
| Two Orange Dogs Therapy Ltd | Health & social care | 2025 |
| UK Holmes Ltd | Real estate | 2023 |
| Uken Manpower Services Limited | Administrative & support | 2024 |
| Ultrasound Imaging Consultants Limited | Professional & scientific | 2025 |
| Ultronic Ltd | Real estate | 2021 |
| Underground Slate Ltd | Information & communication | 2024 |
| Unique Wholesale Distributors Ltd | Wholesale & retail | 2005 |
| Upper Level Roofing Limited | Construction | 2023 |
| Uprise Commercial Limited | Real estate | 2025 |
| Uprise Construction Limited | Construction | 2016 |
| Uprise Construction Services Limited | Construction | 2023 |
| Uprise Electrical Limited | Construction | 2024 |
| Uprise Group Limited | Construction | 2016 |
| Uprise Investment Group Limited | Professional & scientific | 2023 |
| Uprise Investments Limited | Real estate | 2016 |
| Uprise Limited | Construction | 2020 |
| Upturn Supported Living Ltd | Other services | 2025 |
| UR Holdings Ltd | Real estate | 2023 |
| Urban Eden Landscapes Limited | Administrative & support | 2003 |
| Urban Living Spaces Limited | Real estate | 2016 |
| Urban Meals Ltd | Hospitality | 2025 |
| UZO Travel Group Ltd | Administrative & support | 2024 |
| V & P Convenience Store Ltd | Wholesale & retail | 2019 |
| V&S Enterprises Ltd | Real estate | 2024 |
| Vaani Freight Services Limited | Administrative & support | 2011 |
| Vaani Homes Ltd | Real estate | 2023 |
| Vahi Ltd | Wholesale & retail | 2021 |
| Valmi Investments Ltd | Real estate | 2025 |
| Vamsa Ltd | Real estate | 2023 |
| Vanderbilt Estates Limited | Real estate | 2020 |
| Vanswell Ltd | Wholesale & retail | 2024 |
| Vara Osteopathic Services Ltd | Health & social care | 2014 |
| Varaj Consulting Ltd | Professional & scientific | 2014 |
| Vardik Estate Limited | Real estate | 2018 |
| Vasmotion Limited | Wholesale & retail | 2009 |
| Vaya Properties Ltd | Real estate | 2020 |
| Vayuputra Consulting Limited | Administrative & support | 2011 |
| VDS Electrical Ltd | Construction | 2023 |
| Vector City Limited | Manufacturing | 2016 |
| Veema Cafe Ltd | Hospitality | 2026 |
| Velocitaas Limited | Professional & scientific | 2022 |
| Vendorrisk Limited | Administrative & support | 2003 |
| Venus Laser Hair & Beauty Limited | Other services | 2011 |
| Venus Realty Ltd | Real estate | 2022 |
| Verifides Limited | Professional & scientific | 2026 |
| Vermotors Ltd | Wholesale & retail | 2017 |
| Versacare Limited | Health & social care | 2015 |
| Vesta Play Limited | Manufacturing | 2025 |
| VGM Electrical Ltd | Construction | 2015 |
| Vgren Asset Management Limited | Real estate | 2026 |
| Viac Group Ltd | Real estate | 2025 |
| Vibecommerce Ltd | Wholesale & retail | 2024 |
| Vidanj Limited | Real estate | 2023 |
| Viet Properties Ltd | Real estate | 2025 |
| Viman Homes Ltd | Real estate | 2020 |
| Vinmore Limited | Information & communication | 2024 |
| Vino Van Limited | Wholesale & retail | 2021 |