| Tidy Scaffolding Services Limited | Construction | 2012 |
| Tidyturn Accounting Limited | Professional & scientific | 2022 |
| Tile Stone Group Ltd | Wholesale & retail | 2021 |
| Timsa Property Ltd | Real estate | 2022 |
| Timur Restaurant Ltd | Hospitality | 2024 |
| Tinma Limited | Hospitality | 2016 |
| Tiny Explorer Kids Ltd | Education | 2012 |
| Tisha & Rishab Limited | Information & communication | 2010 |
| Titan Elevators Limited | Construction | 1997 |
| Titan Holdings Limited | Real estate | 2023 |
| TJ Construction(Uk) Ltd | Professional & scientific | 2025 |
| TJ Draper Ltd | Professional & scientific | 2024 |
| TJD Properties & Rentals Ltd | Real estate | 2025 |
| Tk&Harvey Holdings Private Limited | Real estate | 2022 |
| TKJ Homes Ltd | Real estate | 2026 |
| TLB Carpentry Ltd | Manufacturing | 2025 |
| TLH Paving and Construction Ltd | Construction | 2026 |
| TM Business Solutions Ltd | Professional & scientific | 2021 |
| TMR Sons Civil Engineering Ltd | Construction | 2013 |
| TMT Finishes Ltd | Manufacturing | 2025 |
| TN Convenience Store Ltd | Wholesale & retail | 2026 |
| Tngegs Limited | Information & communication | 2021 |
| Tommy's Health Care Limited | Health & social care | 2013 |
| Tonics (Menswear) Limited | Wholesale & retail | 2021 |
| Tony Uden Ltd | Construction | 2017 |
| Tootsies Restaurant Limited | Hospitality | 2015 |
| Top Nosh Machines Ltd | Wholesale & retail | 2025 |
| Top Quality Kent Catering Ltd | Hospitality | 2025 |
| Top Tech Tuning Ltd | Wholesale & retail | 2024 |
| TOS Educational Consultancy Ltd. | Education | 2014 |
| Total Tech Repair Ltd | Wholesale & retail | 2019 |
| Total Upkeep Limited | Construction | 2014 |
| Town & Country Developments Limited | Construction | 2015 |
| Townley Daycare Limited | Health & social care | 2025 |
| Townley Grammar School Trust | Education | 2011 |
| Toyin B Ltd. | Health & social care | 2017 |
| Tracemode Limited | Construction | 1983 |
| Tradeline Connect Ltd | Information & communication | 2026 |
| Trainride Group Limited | Arts & recreation | 2017 |
| Transform SC Limited | Professional & scientific | 2020 |
| Transformation Innovation Consulting Ltd. | Information & communication | 2014 |
| Transforming Perceptions Ltd | Professional & scientific | 2019 |
| Travelstar UK Executive Transfers Ltd | Transport & logistics | 2026 |
| Treehouse Accounting Services Limited | Professional & scientific | 2020 |
| Tricorn Selection Limited | Administrative & support | 2007 |
| Tricount Ltd | Health & social care | 2019 |
| Tridec Decorating Limited | Construction | 2015 |
| Trinal Genius Limited | Information & communication | 2012 |
| Trinity Solution PVT Ltd | Health & social care | 2015 |
| Trip Solutions Limited | Information & communication | 2005 |
| Triple Trades Limited | Wholesale & retail | 2025 |
| Trips Properties Ltd | Real estate | 2025 |
| TRM Innovations Limited | Construction | 2014 |
| Trovirom Limited | Wholesale & retail | 2020 |
| Trumark Ltd | Professional & scientific | 2024 |
| TRV Software Solutions Ltd | Information & communication | 2015 |
| Tsavaris & Corimba Ltd | Real estate | 2021 |
| TT & Co Accountancy Ltd | Professional & scientific | 2024 |
| TT & PK Ltd | Health & social care | 2022 |
| Ttmstudio Ltd | Professional & scientific | 2018 |
| Tuckd Ltd | Hospitality | 2025 |
| Tucker-Baptist Multi Academy Trust | Education | 2017 |
| Tutors 11 Plus Ltd | Education | 2018 |
| TV Worldnet Ltd | Professional & scientific | 2002 |
| TVR Power Engineering Ltd | Professional & scientific | 2023 |
| TVR Property Rentals Limited | Real estate | 2019 |
| Twastra Technologies Ltd | Information & communication | 2011 |
| TWENTY7 Prop Limited | Real estate | 2023 |
| Two 1 Five Ltd | Hospitality | 2022 |
| Ucad Ltd | Information & communication | 2011 |
| UK Renova Limited | Real estate | 2024 |
| Ukbn Limited | Professional & scientific | 2014 |
| Ultra Construction South East Limited | Construction | 2019 |
| UMA Services Ltd | Wholesale & retail | 2024 |
| UMA Solutions Ltd | Information & communication | 2024 |
| Umalck Investments Ltd | Real estate | 2022 |
| UMU Productions Limited | Professional & scientific | 1999 |
| Unequaled Heating Ltd. | Construction | 2016 |
| Unique Universal Solutions Limited | Construction | 2004 |
| Uniserv Enterprises Ltd. | Construction | 2010 |
| UNIT1 FM Group Ltd | Administrative & support | 2025 |
| United Medicare Limited | Information & communication | 2000 |
| Universal Bedding Ltd | Wholesale & retail | 2024 |
| Universal EDU Limited | Education | 2016 |
| Upscaleit Limited | Information & communication | 2018 |
| UQC Ltd | Construction | 2023 |
| Urban Transport London Ltd | Transport & logistics | 2018 |
| Utopia Software Solutions Limited | Information & communication | 2016 |
| V & R Law Ltd | Real estate | 2024 |
| V&M Construction Ltd | Construction | 2019 |
| Vacca and BOS Limited | Professional & scientific | 2012 |
| Vadys Limited | Transport & logistics | 2020 |
| Valentine Vending Ltd | Wholesale & retail | 2024 |
| Valeting Plus Limited | Wholesale & retail | 2025 |
| Valhalla Trade Ltd | Wholesale & retail | 2023 |
| Valmont Partners Ltd | Real estate | 2025 |
| Vandhna's H&B Ltd | Other services | 2023 |
| Vanessa Dinh Ltd | Other services | 2025 |
| Vanguard UK Guardianship Ltd | Education | 2022 |
| Vanya Cleaning Ltd | Administrative & support | 2021 |