| Taste of China (Portsmouth) Limited | Hospitality | 2006 |
| Taste of Lahore (Hounslow) Limited | Hospitality | 2012 |
| Taste of South Ltd | Hospitality | 2022 |
| Tata Mini CAB Ltd | Transport & logistics | 2015 |
| Tatab Limited | Wholesale & retail | 2017 |
| Tauron Ltd | Wholesale & retail | 2014 |
| TAV Prasad Ltd | Wholesale & retail | 2026 |
| Tavr Ltd | Wholesale & retail | 2025 |
| Tawheed Trust Ltd | Other services | 2025 |
| Taxmax Limited | Professional & scientific | 2024 |
| TB Finance Services Ltd | Financial services | 2021 |
| TBA Sandhu Ltd | Hospitality | 2024 |
| TBC Ltd Community Interest Company | Hospitality | 2024 |
| TC Care Limited | Health & social care | 2009 |
| TCC Consulting Ltd | Other services | 2015 |
| TCH Decorators Ltd | Construction | 2018 |
| Tea & Coffee 78 Limited | Hospitality | 2024 |
| Tealicious Fusion Tokri Ltd | Hospitality | 2024 |
| Tech & Vape Ltd | Wholesale & retail | 2019 |
| Tech Care Hub Ltd | Wholesale & retail | 2026 |
| Tech Clear Solutions Ltd | Water & waste | 2026 |
| Tech Extract Limited | Wholesale & retail | 2025 |
| Tech Flux Ltd | Professional & scientific | 2021 |
| Tech MOB Limited | Wholesale & retail | 2025 |
| Tech Service Centre Limited | Information & communication | 2023 |
| Tech Tronex Ipswich Ltd | Wholesale & retail | 2025 |
| Tech Universal Ventures UK Ltd | Information & communication | 2020 |
| Tech VAT Limited | Information & communication | 2015 |
| Techdela Consulting Limited | Information & communication | 2025 |
| Techeleven Ltd | Wholesale & retail | 2019 |
| Techex Private Ltd | Information & communication | 2025 |
| Techlinx Ltd | Information & communication | 2018 |
| Techneapp Ltd | Information & communication | 2023 |
| Technera Limited | Information & communication | 2026 |
| Technica Consulting Limited | Professional & scientific | 2025 |
| Technical Quality Control Services Company Ltd | Transport & logistics | 2025 |
| Techno Goods Ltd | Wholesale & retail | 2014 |
| Techno Hub London Limited | Wholesale & retail | 2024 |
| Techno Smart Services Ltd | Wholesale & retail | 2024 |
| Technocad Pro-Hirata Ltd | Professional & scientific | 2024 |
| Technoobytes Services Ltd | Information & communication | 2024 |
| Technophile Consultancy Ltd | Information & communication | 2016 |
| Technorom Ltd. | Information & communication | 2025 |
| Technosyslabs UK Limited | Information & communication | 2026 |
| Technovate Digital Ltd | Information & communication | 2017 |
| Techrise Limited | Information & communication | 2014 |
| Techshahi UK Ltd | Wholesale & retail | 2024 |
| Techspire Ltd | Information & communication | 2011 |
| Techwiser Solutions Ltd | Information & communication | 2024 |
| Tecnosys Limited | Hospitality | 2011 |
| Tedmet Limited | Real estate | 2024 |
| TEE & GEE Ltd | Wholesale & retail | 2023 |
| Teelinks Limited | Information & communication | 2007 |
| TEG UK Transport Ltd | Construction | 2024 |
| Tegvir Limited | Transport & logistics | 2025 |
| Tehbar Ltd | Wholesale & retail | 2025 |
| Teja Tech Enterprise Limited | Administrative & support | 2025 |
| Tejas Consultancy Services Ltd | Information & communication | 2006 |
| TEK SYS Limited | Information & communication | 2016 |
| Teknotalia Ltd | Wholesale & retail | 2025 |
| Telcoinabox Limited | Information & communication | 2024 |
| Telecom Guru Ltd | Information & communication | 2013 |
| Telugu Street Food Ltd | Hospitality | 2025 |
| Tempdirect Ltd | Professional & scientific | 2018 |
| Tempest Rentals (Stickney) Limited | Administrative & support | 2002 |
| Temple Bar Cafe Ltd | Hospitality | 2024 |
| Temple Empire Limited | Real estate | 2016 |
| Temple Walbrook Financial Services Ltd | Financial services | 2018 |
| Temple Walbrook Ltd | Financial services | 2018 |
| Templer Ltd | Professional & scientific | 2010 |
| Tempo Tennis Limited | Arts & recreation | 2023 |
| Tempup Recruitment Ltd | Transport & logistics | 2014 |
| TEN Driving School Limited | Education | 2026 |
| TEN Haulage Ltd | Construction | 2024 |
| Tepre Limited | Wholesale & retail | 2025 |
| TER Services Ltd | Public administration | 2019 |
| Terascale Data Solutions Ltd | Information & communication | 2025 |
| Teri Kirpa Courier Limited | Transport & logistics | 2026 |
| Terling Local Limited | Wholesale & retail | 2025 |
| TERMINAL6UK Ltd | Information & communication | 2025 |
| Terrapluse Ltd | Real estate | 2025 |
| Terrifying Sports London Ltd | Manufacturing | 2024 |
| Tesla Carpenter Ltd | Construction | 2022 |
| Tesla Environment Controls Limited | Professional & scientific | 2015 |
| Test IT Solutions Limited | Information & communication | 2014 |
| Test Valley Roofing Ltd | Construction | 2023 |
| Testdel UK Ltd | Information & communication | 2016 |
| Texpro International UK Limited | Professional & scientific | 2008 |
| TFI Services Ltd | Transport & logistics | 2021 |
| TG International Ltd | Manufacturing | 2025 |
| TH Dhami Limited | Transport & logistics | 2024 |
| THA Construction Ltd | Construction | 2025 |
| Thakers High Street Ltd | Real estate | 2020 |
| Thakker Investment Ltd | Financial services | 2026 |
| Thakur Solicitors Ltd | Professional & scientific | 2019 |
| Thaman Infotech Ltd | Information & communication | 2014 |
| Thames Legal Advisors Ltd | Professional & scientific | 2025 |
| Thames Valley Storage Ltd | Transport & logistics | 2025 |
| Thammal Ltd | Construction | 2026 |
| Thantrade Ltd | Wholesale & retail | 2019 |