| Ucall Idrive Ltd | Transport & logistics | 2011 |
| UK City Pizza Ltd | Hospitality | 2022 |
| UK Construction and Roofing Services Ltd | Construction | 2024 |
| UK Home Blinds Ltd | Wholesale & retail | 2023 |
| UK Home Ride Ltd | Wholesale & retail | 2021 |
| UK Homeware Ltd | Wholesale & retail | 2014 |
| UK Independent Connection Providers Ltd | Construction | 2022 |
| UK Local Cleaners Ltd | Administrative & support | 2026 |
| UK Metrology & Calibration Ltd | Professional & scientific | 2018 |
| UK Paving Stone Ltd | Construction | 2021 |
| UK Property Improvements Ltd | Construction | 2020 |
| UK Shootwarehouse Limited | Administrative & support | 2014 |
| Uk-China Education & Culture Services Limited | Other services | 2006 |
| Ultra Spice Ltd | Hospitality | 2026 |
| Ultras Boys Ltd | Transport & logistics | 2021 |
| Ultravalve Limited | Wholesale & retail | 1986 |
| Umraty Voyages Ltd | Administrative & support | 2025 |
| Uniatom Ltd | Transport & logistics | 2019 |
| Unifabs Design Limited | Real estate | 2017 |
| Unifabs Holdings Limited | Financial services | 2022 |
| Unifabs Limited | Manufacturing | 2006 |
| Union Jack Airsoft Limited | Wholesale & retail | 2013 |
| Unique Nails 64 Ltd | Other services | 2022 |
| Unique Norfolk Venues Ltd | Hospitality | 2013 |
| Unislide Limited | Manufacturing | 2004 |
| United Enterprise Ltd | Information & communication | 2024 |
| United Exercise Limited | Health & social care | 2010 |
| United Midland Transport Ltd | Transport & logistics | 2023 |
| United Transport Private Ltd | Transport & logistics | 2021 |
| Unitiive Limited | Professional & scientific | 2023 |
| Unity Learning Partnership Limited | Education | 2013 |
| Unity Security Group Limited | Administrative & support | 2026 |
| Universal Bodyshop UK Limited | Wholesale & retail | 2015 |
| Unlimited Property Solutions Ltd | Construction | 2025 |
| UNS Developments Limited | Other services | 2004 |
| UNS Homes Limited | Real estate | 2008 |
| Unseen Digital Ltd | Information & communication | 2025 |
| Unveiled Glam Limited | Other services | 2022 |
| Upgear Design Ltd | Professional & scientific | 2012 |
| Upgreen Upholstery Ltd | Manufacturing | 2017 |
| Upsilon Wealth Management Limited | Professional & scientific | 2014 |
| Upton Lodge Farm Limited | Construction | 2024 |
| Urban Cheesecake Limited | Manufacturing | 2023 |
| Urban Learners Driving School Ltd | Education | 2025 |
| Urban Styles Barber Ltd | Other services | 2025 |
| Urban Traffic Design Limited | Professional & scientific | 2018 |
| Ursuleac Trans Ltd | Transport & logistics | 2016 |
| V Tiles Limited | Wholesale & retail | 2016 |
| V&C Business Ltd | Hospitality | 2026 |
| V&L Trans Ltd | Construction | 2020 |
| V&S Foods Ltd | Hospitality | 2022 |
| V.P.L. Limited | Construction | 2018 |
| V24 Ltd | Manufacturing | 2018 |
| Va-Support Solutions Ltd | Professional & scientific | 2000 |
| Vaid Trading Limited | Information & communication | 2023 |
| Vainga (London) Limited | Administrative & support | 2025 |
| Vainga Limited | Administrative & support | 2025 |
| VAL Speed Ltd | Transport & logistics | 2016 |
| Valentin Danut Limited | Transport & logistics | 2016 |
| Valentine Trans Limited | Transport & logistics | 2019 |
| Valentine's Logistics Limited | Transport & logistics | 2017 |
| Valore Asset Management Ltd | Real estate | 2011 |
| Valore Property Group Ltd | Administrative & support | 2026 |
| Value Supply Management Limited | Wholesale & retail | 2014 |
| Valuecart Ventures Ltd | Wholesale & retail | 2025 |
| Vanniyan Property Limited | Real estate | 2024 |
| Vantage Surveyors Ltd | Professional & scientific | 2025 |
| Vantage Wise Strategies Ltd | Financial services | 2024 |
| Vantivio Ltd | Information & communication | 2026 |
| Vanward Ltd | Manufacturing | 2025 |
| Vardens Holding Limited | Financial services | 2015 |
| Variant Equities Ltd | Financial services | 2025 |
| Varma Solutions Ltd | Other services | 2024 |
| Varmi Ltd | Transport & logistics | 2025 |
| Vaughan Davies & Co (Pensions & Investments) Limited | Financial services | 2015 |
| Vaver Limited | Administrative & support | 2011 |
| VC Garage Ltd | Wholesale & retail | 2025 |
| Veer's Ltd | Hospitality | 2018 |
| Vegummies Limited | Wholesale & retail | 2020 |
| Vehiix Limited | Manufacturing | 2026 |
| Velmont Transport Limited | Transport & logistics | 2023 |
| Velocity Engineers Ltd | Construction | 2019 |
| Velocity Realty Ltd | Real estate | 2026 |
| Velomotive Ltd | Professional & scientific | 2025 |
| Velthia&Co Ltd | Wholesale & retail | 2025 |
| Velvet Beauty & Aesthetics Limited | Other services | 2018 |
| Venom Golf Ltd | Wholesale & retail | 2026 |
| Ventradix Ltd | Hospitality | 2026 |
| Venyouevents Ltd | Administrative & support | 2017 |
| VEO Proactive Consultancy Ltd | Professional & scientific | 2021 |
| Vera LDV Business Limited | Wholesale & retail | 2019 |
| Verdigris Projects Ltd | Wholesale & retail | 2026 |
| Verktak Ltd | Construction | 2026 |
| Versamotive Ltd | Administrative & support | 2019 |
| Vertical Homes Limited | Real estate | 2012 |
| Vesa Logistics Ltd | Transport & logistics | 2020 |
| Vesola Property Ltd | Real estate | 2026 |
| Veterans Healthcare Ltd | Health & social care | 2023 |
| Veza Consultancy Limited | Professional & scientific | 2024 |
| VFA Holdings Limited | Education | 2024 |