| Unmasked Theatre C.I.C. | Arts & recreation | 2014 |
| Unsa Property Investment Ltd | Real estate | 2018 |
| Unum Aircraft Seating Limited | Manufacturing | 2020 |
| Unus Property Solution Ltd | Real estate | 2024 |
| Upgrade Construction & Landscaping Limited | Administrative & support | 2025 |
| Uplands & Co. Watches Limited | Wholesale & retail | 2023 |
| Upminster Developments Limited | Construction | 2006 |
| Upminster Holdings Limited | Real estate | 2006 |
| Upmode Consulting Limited | Information & communication | 2011 |
| UPR Ultra Repairs Limited | Other services | 2025 |
| Upright Building Services Limited | Construction | 2021 |
| Upright Services Limited | Construction | 2023 |
| Uptown Music Ltd | Arts & recreation | 2015 |
| Urban Asset Protection Limited | Administrative & support | 2026 |
| Urban Builders Crawley Ltd | Construction | 2023 |
| Urban Garms Limited Limited | Wholesale & retail | 2023 |
| Urban Planters Franchise Limited | Administrative & support | 2004 |
| Urban Share Limited | Real estate | 2005 |
| Urbanwood Furniture Crawley Limited | Manufacturing | 2026 |
| URC Ltd | Water & waste | 2017 |
| USA Food and Drink UK Ltd | Wholesale & retail | 2025 |
| USA News and Sports Limited | Information & communication | 2012 |
| Usamaahmad Ltd | Wholesale & retail | 2025 |
| Uscan Investments Limited | Real estate | 2023 |
| USE Brandable Limited | Professional & scientific | 2020 |
| User Companies Limited | Information & communication | 2016 |
| Usp&E Holdings Ltd | Financial services | 2023 |
| UZA Limited | Wholesale & retail | 2025 |
| V&A Tiling Ltd | Construction | 2022 |
| V&D Green Transport Ltd | Transport & logistics | 2023 |
| V&M Shutters and Blinds Ltd | Manufacturing | 2017 |
| V.A.S. Dental Care Ltd | Health & social care | 2008 |
| VA Business Consultants Limited | Wholesale & retail | 2023 |
| VA Cargo Limited | Transport & logistics | 1991 |
| VAA Holdings UK Limited | Professional & scientific | 2015 |
| Vacant Property EYE Limited | Administrative & support | 2021 |
| Vacuwaste Limited | Extraterritorial | 2024 |
| Valahorum Properties Ltd | Real estate | 2020 |
| Valentini Properties Ltd | Construction | 2011 |
| Valentino Removals Limited | Transport & logistics | 2023 |
| Valfab Ltd | Manufacturing | 2021 |
| Valk Consulting Limited | Information & communication | 2020 |
| Valoroso Race and Restoration Services Limited | Wholesale & retail | 2018 |
| Val’S Pubs Limited | Hospitality | 2018 |
| Vamp Ltd | Financial services | 2026 |
| Vanilla-M Ltd | Financial services | 2009 |
| Vargis Associate's Ltd | Hospitality | 2018 |
| Varian Medical Systems UK Limited | Manufacturing | 1955 |
| Varn Group Ltd | Financial services | 2025 |
| Vashchuk Ltd | Transport & logistics | 2023 |
| Vasile Pascaru Ltd | Construction | 2020 |
| Vastin Healthcare Limited | Health & social care | 2019 |
| Vasudev & Manav Limited | Wholesale & retail | 2026 |
| Vaughan Dyslexia Services Limited | Education | 2022 |
| VDK Services Limited | Professional & scientific | 2015 |
| Vebtek Technology Solutions Limited | Information & communication | 2020 |
| Vector Recruitment Solutions Ltd | Administrative & support | 2018 |
| Vedagram UK Ltd | Health & social care | 2014 |
| Vedic Fleet and Transport Limited | Transport & logistics | 2017 |
| Vedic Voyages Limited | Transport & logistics | 2023 |
| Vee's Global Trade Limited | Wholesale & retail | 2025 |
| Veefix Auto Services Ltd | Other services | 2023 |
| Veer Group Ltd | Hospitality | 2024 |
| Vehicle Works Servicing Limited | Wholesale & retail | 2023 |
| Velocity Logistics Limited | Transport & logistics | 2020 |
| Velora Distributions Ltd | Wholesale & retail | 2025 |
| Velorious Care Ltd | Administrative & support | 2022 |
| Velotrack Solutions Limited | Transport & logistics | 2025 |
| Velox Group Ltd | Transport & logistics | 2026 |
| Velsor Limited | Professional & scientific | 2025 |
| Veltrix Solutions Ltd | Information & communication | 2025 |
| Velvet Ecosystems Limited | Professional & scientific | 2026 |
| Velvet Theory Ltd | Wholesale & retail | 2025 |
| Vendserve Ltd | Wholesale & retail | 2025 |
| Vent Firesafe Ltd | Professional & scientific | 2025 |
| Venturi GAS and Heating Ltd | Manufacturing | 2024 |
| Veracity London Limited | Wholesale & retail | 2025 |
| Verdant Hill Investments Ltd | Financial services | 2022 |
| Veritas DGC Limited | Professional & scientific | 1972 |
| Veritas Trade Limited | Wholesale & retail | 2025 |
| Vertavia Limited | Manufacturing | 2020 |
| Vertex Padel Ltd | Wholesale & retail | 2025 |
| Vertu Transfers Ltd | Transport & logistics | 2023 |
| Very Vegan Limited | Hospitality | 2014 |
| Vetinsight Ltd | Professional & scientific | 2012 |
| VGW Motor Company Ltd | Wholesale & retail | 2021 |
| Vhandym Limited | Construction | 2025 |
| Vicarage Lane Dental Care Limited | Health & social care | 2011 |
| Vicki Doherty Limited | Arts & recreation | 2022 |
| Victor Care Limited | Extraterritorial | 2024 |
| Vidun Ltd | Administrative & support | 2016 |
| Vigil Ltd | Health & social care | 2021 |
| Villa Fontana Management Company Limited | Water & waste | 1999 |
| VIN DOT IS (UK) Ltd | Wholesale & retail | 2023 |
| Vineet Logistics Ltd | Transport & logistics | 2024 |
| Vinfinity Limited | Wholesale & retail | 2015 |
| Vintage Cash NOW Ltd | Wholesale & retail | 2025 |
| Vintage Driveways Ltd | Administrative & support | 2013 |
| Vintage Holdings Ltd | Real estate | 2025 |
| VINTAGE1962 Ltd | Professional & scientific | 2025 |