| Tmaxx Ltd. | Agriculture & fishing | 2016 |
| Tmsm Ltd | Construction | 2019 |
| Tokcommerce Ltd | Wholesale & retail | 2025 |
| Tokyo Kimchi & Miso Ltd | Hospitality | 2026 |
| TOM Pearce Limited | Financial services | 2014 |
| Tomag Builders Limited | Construction | 2011 |
| Top Oak Holdings Ltd | Hospitality | 2024 |
| Top Plumbers and Builders Ltd | Construction | 2016 |
| Topfloor Sanding Ltd | Construction | 2011 |
| Torreviejasxairbnb Ltd | Hospitality | 2025 |
| Totally Lucy Limited | Administrative & support | 2012 |
| TR Leisurewear Ltd | Wholesale & retail | 2019 |
| TR Protect Limited | Administrative & support | 2024 |
| Tradeany Limited | Wholesale & retail | 2024 |
| Travancore Group Ltd | Real estate | 2025 |
| Travel Hub N Tours Ltd | Administrative & support | 2025 |
| Travel Xperience Limited | Transport & logistics | 2024 |
| Tree Frog Investments Ltd | Real estate | 1997 |
| Treloar&Co Ltd | Wholesale & retail | 2024 |
| Trifa Groups Ltd | Wholesale & retail | 2026 |
| Trillium Consulting Ltd | Professional & scientific | 2024 |
| Trimarge Care and Cleaning Limited | Health & social care | 2016 |
| Trinity Vees Ltd | Construction | 2014 |
| Triple a Parcel Express Limited | Transport & logistics | 2013 |
| Triumph Management Ltd | Hospitality | 2021 |
| Tronseal Limited | Wholesale & retail | 1979 |
| True Haircare Ltd | Other services | 2020 |
| Tsultans Ltd | Professional & scientific | 2026 |
| TTM Properties Limited | Construction | 2017 |
| TTP 03 Limited | Construction | 2024 |
| TTP Construction Ltd | Construction | 2012 |
| TUCKSHOP247 Ltd | Wholesale & retail | 2025 |
| Tudor Surveying and Engineering Ltd | Construction | 2010 |
| Tuition World Limited | Education | 2010 |
| Tung Builders Ltd | Construction | 2023 |
| Turqwise Events PR Ltd | Administrative & support | 2019 |
| TV07&CO Ltd | Hospitality | 2026 |
| Twenty Three PR Ltd | Professional & scientific | 2017 |
| TWENTY8 AI Ltd | Other services | 2018 |
| Two Aces Properties Chigwell LLP | | 2024 |
| Tycg Ltd | Wholesale & retail | 2026 |
| Typogift Limited | Wholesale & retail | 1987 |
| Tysons Contractors Ltd | Construction | 1999 |
| U D T a S Care Limited | Health & social care | 2023 |
| Uddins Nagar Ltd | Real estate | 2015 |
| UFC International Limited | Real estate | 2017 |
| Ugsg Ltd | Real estate | 2023 |
| Ugurcan & Kumsal Asset Management Ltd | Real estate | 2025 |
| UK ARK Ltd | Professional & scientific | 2014 |
| UK Foam Insulation Ltd | Construction | 2021 |
| UK Payroll Services Limited | Financial services | 2025 |
| UK Service Accommodations Ltd | Real estate | 2013 |
| Uk-Immigration & Refugee CIC | Professional & scientific | 2024 |
| Ultimate Capital Estates Limited | Real estate | 2025 |
| Umut Ozdil Ltd | Other services | 2025 |
| Underwood Education Group Ltd | Education | 2026 |
| Unhoused Technologies Ltd | Information & communication | 2018 |
| Unipathprop UK Ltd | Real estate | 2025 |
| Unique Audacity Limited | Professional & scientific | 2025 |
| Unique Supplies Limited | Wholesale & retail | 2016 |
| United Team Services Ltd | Administrative & support | 2023 |
| Urban Developers Ltd | Construction | 2017 |
| Urban Developing and Property Limited | Real estate | 2025 |
| Urbanworks London Ltd | Construction | 2014 |
| USC Property Management Ltd | Construction | 2015 |
| Usman Dhillon Ltd | Real estate | 2025 |
| V K Consultants Ltd | Professional & scientific | 2021 |
| V N Ohrie Property Co Ltd | Real estate | 2018 |
| V V S Construction Limited | Construction | 2015 |
| V&E Global Ltd | Wholesale & retail | 2022 |
| V&V Creations Ltd | Wholesale & retail | 2018 |
| Vanglove Ltd | Wholesale & retail | 2024 |
| Vantage Property Consultancy Ltd | Real estate | 2023 |
| Varn Construction Limited | Construction | 2020 |
| VBS Brickwork Limited | Construction | 2014 |
| VDC Solutions Ltd | Information & communication | 2014 |
| VELISLAV70 Limited | Transport & logistics | 2017 |
| Venus Global Finance Ltd | Professional & scientific | 2021 |
| Verafyz Ltd | Information & communication | 2025 |
| Verisync Group Ltd | Information & communication | 2025 |
| Vibe HGV Ltd | Transport & logistics | 2021 |
| Vibingks Ltd | Wholesale & retail | 2023 |
| Victor 2005 Ltd | Other services | 2016 |
| Victoria Gardens (Chelmsford) Management Company Limited | Households | 1991 |
| Victoria Tibuh Accounting Ltd | Professional & scientific | 2018 |
| View Land Limited | Real estate | 2023 |
| Viewkeep Limited | Real estate | 2023 |
| Viewland Prop Limited | Construction | 2024 |
| Viewland Ventures Limited | Construction | 2024 |
| Viewplot Limited | Real estate | 2025 |
| Vika Investment Ltd | Real estate | 2021 |
| Vira Property Group Ltd | Real estate | 2025 |
| Virasa Property Limited | Real estate | 2018 |
| Virendale Capital Group Ltd | Real estate | 2026 |
| Virtual Sellers Ltd | Wholesale & retail | 2024 |
| Virtual Valley Limited | Administrative & support | 2010 |
| Visativis Limited | Real estate | 2020 |
| Vishansa Ltd | Real estate | 2024 |
| Visible Changes UK Ltd | Administrative & support | 2025 |
| Viswa & Siva Properties Ltd | Real estate | 2018 |