| UK Telecom Scholars Association Ltd | Professional & scientific | 2022 |
| Uk-China Culture & Education Exchange Centre Ltd | Education | 2014 |
| UK64LUT Ltd | Real estate | 2019 |
| Ukraine Mission CIC | Transport & logistics | 2023 |
| Ukrf Telecoms Limited | Other services | 1998 |
| Ultimate Computer Support Limited | Information & communication | 1996 |
| Unboxed Pharmacy Ltd | Information & communication | 2014 |
| Understand UK Tax Limited | Wholesale & retail | 2025 |
| UNI Real Estate Limited | Real estate | 2019 |
| Uniccm Limited | Information & communication | 2023 |
| Unico Components Limited | Wholesale & retail | 1970 |
| Unico International Limited | Professional & scientific | 1986 |
| Unico Storage LLP | | 2002 |
| Unicorn Consulting Solutions Limited | Financial services | 2014 |
| Unicroft Limited | Professional & scientific | 2003 |
| Unigold 2000 Limited | Information & communication | 1996 |
| Union House Management Company Limited | Real estate | 2012 |
| Union Street Freehold Ltd | Households | 2021 |
| Unique Cooling Services Limited | Construction | 2015 |
| Uniquest Education PLC | Professional & scientific | 2000 |
| Unisto Limited | Professional & scientific | 1937 |
| United Estates of Remia Limited | Real estate | 2017 |
| United Fashion London Ltd | Wholesale & retail | 2026 |
| Universal Identity Ltd | Information & communication | 2022 |
| Universal Simulation Ltd | Information & communication | 2019 |
| University of Surrey (Asia) Limited | Education | 2019 |
| University of Surrey Seed Fund Limited | Professional & scientific | 2000 |
| Uniwear Ltd | Wholesale & retail | 2011 |
| Unlock Hypnotherapy Limited | Education | 2025 |
| UNR Accounting Ltd | Professional & scientific | 2023 |
| Unreal Agency Ltd | Professional & scientific | 2026 |
| Unsung Lilly Limited | Arts & recreation | 2014 |
| Unwritten Creations Ltd | Professional & scientific | 2024 |
| UP and Down Limited | Professional & scientific | 1999 |
| Uphay Farm Limited | Agriculture & fishing | 2016 |
| Upmost Ltd | Information & communication | 2018 |
| Uprety Properties Limited | Real estate | 2024 |
| Upskill Football Coaching Ltd | Education | 2021 |
| Urban Alchemy Limited | Real estate | 2022 |
| Urban Build Contracts Limited | Construction | 2014 |
| Urban Design and Building Limited | Construction | 2025 |
| Urban Dietitians Ltd | Health & social care | 2025 |
| Urban Hortiscapes Limited | Administrative & support | 2017 |
| Urban&Rural Landscape Construction Ltd | Construction | 2011 |
| Urbannest Property Management Limited | Households | 2000 |
| Urbanomy UK Limited | Professional & scientific | 2020 |
| Used Telecoms Europe Limited | Information & communication | 2010 |
| Utah Phosphate Limited | Financial services | 2025 |
| Utopia West Limited | Transport & logistics | 2013 |
| Utopian Resting Places Limited | Administrative & support | 2017 |
| V & WE Solutions Limited | Other services | 2007 |
| V&B Logistics Ltd | Transport & logistics | 2014 |
| V&B Transforming Spaces Ltd | Construction | 2024 |
| V108 LLP | | 2023 |
| V15K Limited | Other services | 2021 |
| V8 Brands Ltd | Wholesale & retail | 2025 |
| Vacuum Theatre CIC | Arts & recreation | 2014 |
| VACUUMS4U Limited | Wholesale & retail | 2006 |
| VAL MAY Productions | Real estate | 1964 |
| Valeconcept Property Management Limited | Households | 1987 |
| Valenti & Pryce Limited | Construction | 2013 |
| Valentis Bridge Ltd | Administrative & support | 2007 |
| Valetmobilize Limited | Other services | 2024 |
| Valey and Stream Ltd | Construction | 2024 |
| Valkari Ltd | Extraterritorial | 2015 |
| Valkyr AI Ltd | Information & communication | 2025 |
| Van ESZ Holdings Limited | Households | 2025 |
| Van Zuylen Consulting Limited | Professional & scientific | 2024 |
| Vaneykenhof Ltd | Information & communication | 2020 |
| Vanguard Business Services Limited | Real estate | 2023 |
| Vangunn Limited | Mining & quarrying | 2012 |
| Vapa Creative Ltd | Professional & scientific | 2014 |
| Vape N Vibe Ltd | Wholesale & retail | 2025 |
| Vapeish Vapes Ltd | Wholesale & retail | 2023 |
| Variohm Holdings Limited | Professional & scientific | 2006 |
| Variohm-Eurosensor Limited | Manufacturing | 1992 |
| Varni Consulting Limited | Information & communication | 2019 |
| Varoke Property and Financial Management Limited | Real estate | 1987 |
| Vasco Ventures Ltd | Other services | 2022 |
| Vastbridge Farm Ltd | Agriculture & fishing | 2019 |
| Vauxhall Holdings Limited | Financial services | 2020 |
| Vauxhall Investments Limited | Real estate | 1957 |
| Vayu Yoga Academy Limited | Education | 2024 |
| Vayu Yoga Limited | Arts & recreation | 2021 |
| VB Editorial Services Limited | Professional & scientific | 2017 |
| Vbkom Limited | Professional & scientific | 2023 |
| Vectiox Solutions Limited | Professional & scientific | 2019 |
| Vectis Advisory Limited | Professional & scientific | 2026 |
| Vectis Property Co. Limited | Real estate | 1952 |
| Vector Property Investments Limited | Real estate | 2008 |
| VEG Saver Ltd | Wholesale & retail | 2022 |
| Veiga Design Co Ltd | Professional & scientific | 2023 |
| Veleta AI Limited | Information & communication | 2020 |
| Velour Aesthetic Lounge Ltd | Other services | 2026 |
| Veloz Capital Ltd | Information & communication | 2023 |
| Velvet Curtain Publishing Ltd | Information & communication | 2024 |
| Vendra Healthcare Ltd | Health & social care | 2025 |
| Veneficus Ltd | Information & communication | 2010 |
| Venturefield Ltd | Professional & scientific | 2008 |
| Venunique Ltd | Other services | 2024 |