| UA & T Solutions Ltd | Information & communication | 2014 |
| UC Build Limited | Administrative & support | 2016 |
| Uceo Holdings Limited | Construction | 2025 |
| Uconneqt Ltd | Wholesale & retail | 2024 |
| UGO Fibre Ltd | Information & communication | 2026 |
| UK Anodes Ltd | Manufacturing | 2016 |
| UK Material Handling Ltd | Wholesale & retail | 2014 |
| UK Subfloors Limited | Construction | 2020 |
| UK Vending Limited | Administrative & support | 1969 |
| Ukdataworks Ltd | Information & communication | 2021 |
| Ukhaul Ltd | Transport & logistics | 2026 |
| Ukshowerseal Limited | Wholesale & retail | 2018 |
| Uksneakercentral Ltd | Wholesale & retail | 2022 |
| Ulrika Guttormsson Psychotherapy & Counselling Ltd | Health & social care | 2018 |
| Ultraclean Domestic Window Cleaning Service Ltd | Administrative & support | 2022 |
| UNA Volta Productions Limited | Information & communication | 2017 |
| Unar Property Limited | Real estate | 2018 |
| Unar.K Ltd | Wholesale & retail | 2026 |
| Uncanny Harry Productions Ltd | Information & communication | 2024 |
| Undiluted Clothing Ltd | Wholesale & retail | 2021 |
| Unicorn Cosmetics Limited | Wholesale & retail | 2016 |
| Unicorn Investments(Kent) Limited | Arts & recreation | 1986 |
| Unify Co-Living Limited | Real estate | 2025 |
| Unify Property Group Ltd | Financial services | 2025 |
| Unik Education Limited | Education | 2026 |
| Unique Construction Services (UK) Limited | Construction | 2013 |
| Unique Fitness Centre Limited | Arts & recreation | 2019 |
| Unique Secrets Ltd | Wholesale & retail | 2021 |
| Unit Power Service Limited | Professional & scientific | 2017 |
| UNIT54CRAFTS Ltd | Wholesale & retail | 2026 |
| United Corp Limited | Financial services | 2013 |
| United Developments Kent LLP | | 2019 |
| United Electrics Ltd | Construction | 2017 |
| United Glaziers Limited | Construction | 2025 |
| United Marketing & Sales Ltd | Energy | 2015 |
| United Temple of the Spirit Province of the United Kingdom and Associated Territories Ltd | Other services | 2025 |
| Universalite Limited | Real estate | 2005 |
| Unleashed Grooming Limited | Other services | 2023 |
| Unlimited Care Services Limited | Health & social care | 2023 |
| Unlimiteducation Ltd | Education | 2017 |
| Updated Technology Limited | Real estate | 2006 |
| Upland Road Management Limited | Real estate | 2011 |
| Uplift Scaffolding Services Ltd | Construction | 2019 |
| Upnor Management Limited | Households | 1980 |
| Upright Office Interiors LLP | | 2019 |
| Upright Office UK Ltd | Construction | 2024 |
| Uptimum Properties Ltd | Real estate | 2026 |
| Urban Awnings Ltd | Other services | 2025 |
| Urbnethics Ltd | Wholesale & retail | 2024 |
| URO Construction Ltd | Construction | 2023 |
| Uros Constructions Limited | Construction | 2024 |
| USP Group Ltd | Professional & scientific | 2018 |
| USR Ltd | Construction | 2009 |
| USR Plant Ltd | Construction | 2014 |
| Utilities (South East) Limited | Construction | 2018 |
| Utilize Services Ltd | Construction | 2025 |
| Utred Ltd | Administrative & support | 2021 |
| V Stars Nails Spa Ltd | Other services | 2025 |
| V-Line Construction Ltd | Construction | 2014 |
| V-Line Maintenance Ltd | Construction | 2019 |
| V. Sinclair Limited | Construction | 1991 |
| V.M.R Construction Limited | Construction | 2010 |
| V.N. Patel & Sons Limited | Wholesale & retail | 2002 |
| Vacan Limited | Construction | 2017 |
| Vaidik Co Limited | Health & social care | 2023 |
| Valence Properties Limited | Administrative & support | 2009 |
| Valentino Romano Ltd | Hospitality | 2017 |
| Valerian Osteopathy Ltd | Public administration | 2023 |
| Valeting Centre Kent Limited | Other services | 2025 |
| Valhalla Events Ltd | Hospitality | 2022 |
| Valhalla Fitness Ltd | Arts & recreation | 2021 |
| Valley View Care Home Ltd | Health & social care | 2016 |
| Vanesta Ltd | Health & social care | 2021 |
| Vanguard Performance Group Ltd | Wholesale & retail | 2026 |
| Vantage Sailing Limited | Wholesale & retail | 2012 |
| Vape House Kent Limited | Wholesale & retail | 2018 |
| Vapealong Ltd | Wholesale & retail | 2024 |
| Vaperizzo Ltd | Wholesale & retail | 2015 |
| VAR Partners Limited | Information & communication | 2016 |
| Vargo Trades Ltd | Hospitality | 2020 |
| Variety Box Retail Ltd | Wholesale & retail | 2024 |
| Vasa GP Services Limited | Health & social care | 2018 |
| Vasa Property Services Ltd | Real estate | 2024 |
| VB Building Solutions Limited | Construction | 2019 |
| VBA Invest Ltd | Real estate | 2021 |
| Vbro Management Ltd | Professional & scientific | 2025 |
| VCB Properties Limited | Real estate | 2025 |
| VDT86 Ltd | Transport & logistics | 2024 |
| VE Pro Consulting Limited | Information & communication | 2011 |
| VEE Tuition Limited | Education | 2023 |
| Veetee Foods Limited | Manufacturing | 2005 |
| Vegan Adventures Limited | Administrative & support | 2024 |
| Veganise IT Limited | Manufacturing | 2018 |
| Veganly Convenient Ltd | Hospitality | 2021 |
| Vehicle Hire Network Ltd | Extraterritorial | 2020 |
| Velentra Ltd | Information & communication | 2025 |
| Venda Fitness Ltd | Other services | 2023 |
| Vending Services (South East) Limited | Wholesale & retail | 1996 |
| Venis Construction Ltd | Construction | 2015 |
| Venza T/A Strood Launderette Ltd | Other services | 2004 |