| Toy COP Limited | Wholesale & retail | 2002 |
| Tracy B Bell Ltd | Hospitality | 2019 |
| Trade Decor and Signs Limited | Wholesale & retail | 2006 |
| Tradepro Corporation Limited | Construction | 2009 |
| TRAIN2WORK Ltd | Education | 2018 |
| Training by the Missing Piece Limited | Education | 2024 |
| Transrental Limited | Administrative & support | 2015 |
| Trawall Services Limited | Health & social care | 2024 |
| TRB Rigging Limited | Construction | 2019 |
| Treetings Limited | Wholesale & retail | 2018 |
| Treggena Ltd | Professional & scientific | 2023 |
| Trice Limited | Professional & scientific | 2024 |
| Trillian Motors Limited | Manufacturing | 2021 |
| Trillian Repower Limited | Other services | 2021 |
| Trimic Services Ltd | Construction | 2009 |
| Triniti 3 Group Limited | Manufacturing | 2013 |
| Trinity Web Design Limited | Information & communication | 2022 |
| Trstrcag Ltd | Health & social care | 2022 |
| Trundle Trucks Ltd | Construction | 2025 |
| TS Mortgage Specialists Limited | Financial services | 2022 |
| TSV Consulting Ltd | Information & communication | 2025 |
| TTM Electrical Solutions Ltd | Construction | 2024 |
| Tucker Property Ltd | Real estate | 2026 |
| Tunstall Estate Company Limited(The) | Real estate | 1910 |
| Turnaround Training Ltd | Education | 2022 |
| Turnbull Family Aviation Limited | Transport & logistics | 2024 |
| Turnbull Family Developments Limited | Financial services | 1995 |
| Turnbull Family Investments Limited | Financial services | 2016 |
| Turtle Side Limited | Professional & scientific | 2012 |
| Tuzo Driving School Ltd | Education | 2026 |
| Tvsg Ltd | Wholesale & retail | 2025 |
| TW Properties NE Limited | Real estate | 2017 |
| Tweddle Childrens Animal Farm Limited | Arts & recreation | 2009 |
| TWENTY9 Elite Football Coaching Ltd | Arts & recreation | 2024 |
| TWH (the Whole Hogg) Limited | Information & communication | 2004 |
| Twisted Bay Tools Ltd | Wholesale & retail | 2017 |
| TX2 Engineering Limited | Construction | 2024 |
| Tyga Engineering Services Limited | Construction | 2023 |
| Tylerpaws Ltd | Health & social care | 2023 |
| Tyne Tees Limited | Extraterritorial | 2019 |
| UJI Matcha Ltd | Hospitality | 2025 |
| UK Construction Coordination Limited | Administrative & support | 2021 |
| UK Hail Repair Limited | Professional & scientific | 2018 |
| UK Logistics Plus Ltd | Transport & logistics | 2014 |
| UK Mewps Ltd | Information & communication | 2024 |
| UK Nails Without Borders Supply Ltd | Extraterritorial | 2024 |
| UK Room Service Limited | Manufacturing | 2012 |
| UK Truck Sales Ltd | Wholesale & retail | 2011 |
| UK Waste Managment Ltd | Water & waste | 2025 |
| Uk-Usa Ministries | Other services | 2014 |
| Ultimate Security Ltd | Other services | 2016 |
| Ultimate Tanning NE Ltd | Other services | 2025 |
| Ultimate Tanning Studio Limited | Wholesale & retail | 2024 |
| Ultra Medical Ltd | Other services | 2012 |
| Ultra Pro Seal Ltd | Administrative & support | 2019 |
| Ultrasonic Solutions Limited | Professional & scientific | 2018 |
| Uncover North Ltd | Professional & scientific | 2026 |
| Unify Plant Repairs Limited | Manufacturing | 2025 |
| Uninkable Ltd | Wholesale & retail | 2026 |
| Union Property Holdings Limited | Real estate | 2025 |
| United Drilling Limited | Construction | 2024 |
| Uniting Talent Ltd | Administrative & support | 2021 |
| Utfb Limited | Construction | 2017 |
| Utility Savings Group Ltd | Professional & scientific | 2021 |
| Uxcentric Limited | Professional & scientific | 2017 |
| V.F.M. Window Systems Limited | Construction | 2008 |
| V3 Business Solutions Ltd | Professional & scientific | 2013 |
| Vagadiya Limited | Real estate | 2019 |
| Val-U-Van Hire Limited | Extraterritorial | 2020 |
| Vale Management Consulting Limited | Professional & scientific | 2025 |
| Valeting Supplies Direct Ltd | Wholesale & retail | 2021 |
| Valiant Corporate Services Limited | Other services | 2014 |
| Valor Brickwork Limited | Construction | 2022 |
| Vanquish Beauty Limited | Other services | 2017 |
| Vanquish Hair & Beauty Limited | Other services | 2015 |
| Vanshield Ltd | Manufacturing | 2025 |
| Vanta Blinds and Shutters Ltd | Wholesale & retail | 2025 |
| Vape & Tech (NE) Ltd | Wholesale & retail | 2025 |
| Vast Portfolio Limited | Real estate | 2024 |
| VB Catering Limited | Manufacturing | 2008 |
| Vector Construction Services Limited | Other services | 2009 |
| Vectra Workforce Development Ltd | Education | 2020 |
| Velocity Media Planning Ltd | Professional & scientific | 2021 |
| Velocity Power Limited | Wholesale & retail | 2021 |
| Velocity Power Nominees Limited | Financial services | 2024 |
| Velocity Tidal Limited | Energy | 2021 |
| Velocity Wind Limited | Energy | 2021 |
| Vendworks Ltd | Wholesale & retail | 2026 |
| Ventnor Electrical Ltd | Construction | 2021 |
| Ventress Engineering Ltd | Professional & scientific | 2023 |
| Venture Solutions (NE) Limited | Professional & scientific | 2024 |
| Verona F Ltd | Hospitality | 2020 |
| Versatax Accountancy Ltd. | Professional & scientific | 2016 |
| Very Good Accounting Ltd | Professional & scientific | 2010 |
| VH Services NE Ltd | Administrative & support | 2026 |
| Viable Industrial & Environmental Services Limited | Water & waste | 2025 |
| VIC Bell Illustration Limited | Arts & recreation | 2016 |
| Victoria House Funeral Service Ltd | Other services | 2013 |
| Vidamix Ltd | Health & social care | 2024 |
| View Logistics Limited | Wholesale & retail | 2007 |