| UH IT Solutions Ltd | Information & communication | 2022 |
| Uhealth Consultancy Ltd | Health & social care | 2025 |
| Ujan Bhati Cash & Carry Limited | Wholesale & retail | 2020 |
| UK Barbers 27 Limited | Other services | 2026 |
| UK Enterprise Ltd | Transport & logistics | 2004 |
| UK Middle East Academic Services Consultancy Limited | Education | 2014 |
| UK Pavement Light Manufacturing Ltd | Manufacturing | 2010 |
| UK Sala Limited | Wholesale & retail | 2011 |
| UK Spice Masters Ltd | Manufacturing | 2018 |
| Ukali Properties Limited | Real estate | 2024 |
| UKR Drylining Ltd | Construction | 2023 |
| Ukvw Limited | Wholesale & retail | 2024 |
| Ulez Parking Ltd | Real estate | 2020 |
| UM Carpentry Ltd | Construction | 2024 |
| Ummach Limited | Professional & scientific | 2022 |
| Unequal Podcast Productions Ltd | Information & communication | 2023 |
| Unicorn Export Ltd | Construction | 2018 |
| Unicorn Windows Ltd. | Construction | 1994 |
| Unicycleworld C.I.C. | Education | 2021 |
| Uniforms & Workwear Limited | Extraterritorial | 2009 |
| Unimentor Tutors Ltd | Education | 2024 |
| Union Grand Limited | Real estate | 2025 |
| Unique Bedrooms Direct Limited | Manufacturing | 2006 |
| Unique Remnant Services Limited | Health & social care | 2025 |
| Unique Save Ltd | Wholesale & retail | 2019 |
| United Foods Chain Ltd | Hospitality | 2020 |
| United Properties & Management Ltd | Real estate | 2026 |
| United Travel Cars Ltd | Information & communication | 2010 |
| United Travel Investments Ltd | Transport & logistics | 2011 |
| Uniteg Overseas Solvents Limited | Wholesale & retail | 1977 |
| Unitview Ltd | Information & communication | 2020 |
| Universal Construction (Midlands) Ltd | Construction | 2007 |
| Universal Giovani Ltd | Manufacturing | 2020 |
| Universal Motors Peterborough Limited | Wholesale & retail | 2022 |
| Uomo Stius Limited | Wholesale & retail | 2013 |
| UP Spring Ltd | Professional & scientific | 2019 |
| UP Style ME Ltd | Wholesale & retail | 2024 |
| Urban Draw Ltd | Wholesale & retail | 2019 |
| Urban Views Ltd | Real estate | 2021 |
| Urbanhood London Limited | Wholesale & retail | 2025 |
| Usan Ltd | Wholesale & retail | 2026 |
| Used Machinery Trader Limited | Wholesale & retail | 2017 |
| USK Enterprises Ltd | Administrative & support | 2026 |
| Usman Rise Ltd | Wholesale & retail | 2026 |
| Utility Connex Ltd | Administrative & support | 2025 |
| V & C Construct Ltd | Construction | 2024 |
| V & M Commercial Properties Limited | Real estate | 2021 |
| V B Flooring Ltd | Construction | 2008 |
| V Display Services Limited | Manufacturing | 2018 |
| V J C Construction Ltd | Construction | 2021 |
| V W Associates Ltd | Education | 2018 |
| V&A Business Solutions Ltd | Information & communication | 2025 |
| V&T Group Ltd | Wholesale & retail | 2024 |
| Vaab Solutions Ltd | Real estate | 2025 |
| Vadim W Ltd | Construction | 2017 |
| Vaillant Inns Limited | Hospitality | 2007 |
| VAL Francis Ltd | Wholesale & retail | 2020 |
| VAL Handyman Ltd | Construction | 2020 |
| Valencia Consulting Limited | Professional & scientific | 2013 |
| Valken LLP | | 2011 |
| Vallum Contracts Limited | Construction | 2022 |
| Vallum Holdings Limited | Financial services | 2022 |
| Vallum Projects Limited | Construction | 2019 |
| Vallum Property Limited | Real estate | 2023 |
| Valobridge Ltd | Information & communication | 2025 |
| Valta MD Limited | Transport & logistics | 2023 |
| Van Force Ltd | Wholesale & retail | 2022 |
| Vanderwalt Fire Engineering Ltd | Construction | 2019 |
| Vanguard 8 Services Ltd | Construction | 2020 |
| Vantage Team Limited | Information & communication | 2003 |
| Vapureclean Limited | Transport & logistics | 2025 |
| VAS Plastering Ltd | Construction | 2017 |
| Vasco Ltd | Construction | 2013 |
| Vasy&Son Ltd | Water & waste | 2019 |
| VC Records Ltd | Manufacturing | 2025 |
| VCR Trade Ltd | Wholesale & retail | 2026 |
| VDM T&C Ltd | Construction | 2022 |
| VDV Construction Limited | Construction | 2026 |
| Veedux Ltd | Information & communication | 2025 |
| Veer Diamond Limited | Wholesale & retail | 2021 |
| Vegeko Limited | Transport & logistics | 2012 |
| Vehicall Limited | Information & communication | 2025 |
| Vejle Club Limited | Arts & recreation | 2017 |
| Vellora Mart Limited | Wholesale & retail | 2025 |
| Velocecloud Technology & Consulting Ltd | Information & communication | 2024 |
| Velocity Parcels Ltd | Transport & logistics | 2025 |
| Velvet Clean Ltd | Administrative & support | 2026 |
| Venice Design Ltd | Professional & scientific | 2020 |
| Venture Court Management Limited | Real estate | 2006 |
| Vera Chilly Consultancy Services Limited | Hospitality | 2015 |
| Verisit Ltd | Transport & logistics | 2015 |
| Verndora Prestige Cleans Ltd | Administrative & support | 2025 |
| Versatyle Trading Ltd | Wholesale & retail | 2023 |
| Verso Design Limited | Professional & scientific | 2014 |
| Verulamium Value Added Tax Advisory Services Limited | Professional & scientific | 2017 |
| Vesto Talent Group Ltd | Arts & recreation | 2024 |
| Vetsgo Limited | Professional & scientific | 2023 |
| Vhap Properties Limited | Real estate | 2022 |
| Vicarage Kitchen Limited | Hospitality | 2022 |
| Viceroy Ltd | Real estate | 2026 |