| Tzalonikou Consulting Limited | Health & social care | 2015 |
| UA Drylining Limited | Construction | 2011 |
| Ucnet Ltd | Professional & scientific | 2020 |
| UK Chill Ltd | Manufacturing | 2026 |
| UK Nails Limited | Other services | 2024 |
| United Ukraine Fellowship Limited | Health & social care | 2022 |
| UNITY53 Ltd | Administrative & support | 2020 |
| Unlockunleashuplift Ltd | Information & communication | 2016 |
| Urban Gleam Ltd | Administrative & support | 2026 |
| Usher Investments Ltd | Real estate | 2025 |
| V Nails & Spa Limited | Other services | 2019 |
| Vajra Consultancy Limited | Information & communication | 2023 |
| Valina Limited | Construction | 2025 |
| Vals Vans Ltd | Transport & logistics | 2014 |
| Vanorama Limited | Transport & logistics | 1996 |
| Varahi Estates Ltd | Real estate | 2025 |
| Vasantha Eco & Organics Ltd | Wholesale & retail | 2025 |
| VBB Consulting Limited | Professional & scientific | 2013 |
| Vegepod UK Limited | Wholesale & retail | 2018 |
| Vehicle Assistance UK Ltd | Wholesale & retail | 2018 |
| Vehicle Rapid Solutions Ltd | Wholesale & retail | 2018 |
| Velavor Ltd | Information & communication | 2026 |
| Veltra AI Solutions Limited | Information & communication | 2026 |
| Venufyi Ltd | Hospitality | 2025 |
| Verma Ventures Ltd | Wholesale & retail | 2024 |
| VG EYE Care Limited | Health & social care | 2003 |
| VHR Solutions Limited | Information & communication | 2023 |
| Vicmic Ltd | Health & social care | 2018 |
| Victoria & Carter Ltd | Wholesale & retail | 2020 |
| Victoria H Investment Limited | Real estate | 2022 |
| Vindex Systems Limited | Administrative & support | 2002 |
| VISIONS4HEALTH Ltd | Professional & scientific | 2007 |
| Vitaherbs Limited | Wholesale & retail | 2018 |
| Vivek Thadhani Real Estate Ltd | Real estate | 2021 |
| Vivify Staging Ltd | Professional & scientific | 2022 |
| Vkrv Ltd | Real estate | 2025 |
| VN Kapoor Limited | Wholesale & retail | 2025 |
| VOB Multiservices Ltd | Extraterritorial | 2016 |
| VON Otto Ltd | Wholesale & retail | 2020 |
| Vonzeus Ltd | Wholesale & retail | 2023 |
| VP Porfirio Investments Ltd | Real estate | 2024 |
| Vrays Properties Limited | Real estate | 2019 |
| W R Travel Ltd | Administrative & support | 2025 |
| Waiiz Consultants Ltd | Professional & scientific | 2022 |
| Wallis Plumbing Ltd | Construction | 2008 |
| Wansabai Ltd | Other services | 2021 |
| Water Market View Ltd | Professional & scientific | 2017 |
| Watts Road Property Management Limited | Households | 2009 |
| Wayne Enterprises Inc Limited | Real estate | 2023 |
| WDW Commercial Ltd | Real estate | 2017 |
| WDW Trading Co. Ltd | Wholesale & retail | 2015 |
| Weir Campers Limited | Households | 1923 |
| Weir Orchard Limited | Real estate | 2012 |
| Weisz Locksmiths Ltd | Administrative & support | 2013 |
| Weldon Court Residents Association Limited | Households | 1964 |
| Well Supply Chain Limited | Transport & logistics | 2017 |
| West Surrey Racing Limited | Arts & recreation | 1991 |
| WGM Sound Ltd | Information & communication | 2022 |
| Wheatley's Eyot & the Creek Hydro CIC | Energy | 2025 |
| White Heron Mews Management (Teddington) Limited | Households | 1993 |
| Whitehouse Management Company Sunbury Limited | Households | 2020 |
| Whiterod Limited | Administrative & support | 2008 |
| Whole Health Healing Limited | Other services | 2024 |
| Wiles Pest Control Solutions Ltd | Administrative & support | 2025 |
| Willow Land & Development Ltd | Real estate | 2025 |
| Windmill Housewares Limited | Manufacturing | 2003 |
| Winfield Cars Ltd | Wholesale & retail | 2023 |
| Wired Arena Ltd | Information & communication | 2023 |
| Wiszenko Construction Ltd | Construction | 2023 |
| WLC Manager Limited | Administrative & support | 2024 |
| Wolsey Wicks Limited | Manufacturing | 2023 |
| Worlds Best Agency Ltd | Information & communication | 2020 |
| Wsehub Ltd | Wholesale & retail | 2024 |
| WSR Holdings Limited | Real estate | 2000 |
| Xcell Misting Limited | Professional & scientific | 2010 |
| Xeven Solutions Ltd | Information & communication | 2020 |
| Xgeneration Limited | Information & communication | 1997 |
| Xion UK Ltd | Administrative & support | 2023 |
| Xtra Logistics Ltd | Transport & logistics | 2022 |
| Xtra Wellness Ltd | Wholesale & retail | 2026 |
| Xwth Ltd | Professional & scientific | 2025 |
| Xygnition Research Limited | Manufacturing | 2016 |
| Y I Haulage Ltd | Transport & logistics | 2014 |
| Yellow Brick Comms Ltd. | Professional & scientific | 2023 |
| YG Motors Ltd | Wholesale & retail | 2015 |
| Your Future Care Services Ltd | Health & social care | 2021 |
| Yournix Solutions Ltd | Information & communication | 2025 |
| YQX Electronics Company Ltd | Wholesale & retail | 2010 |
| Ysoma Logistics Ltd | Transport & logistics | 2020 |
| Yunus Consulting Ltd | Information & communication | 2016 |
| ZA Global Ltd | Professional & scientific | 2021 |
| Zenstone Homes & Properties Limited | Real estate | 2021 |
| ZEST4.TV Limited | Information & communication | 2005 |
| Água DO MAR Limited | Manufacturing | 2025 |