| UK Tiling Contractors Limited | Construction | 2024 |
| UKA Estates Ltd | Real estate | 2026 |
| Ukminis Ltd | Wholesale & retail | 2020 |
| Ukocr Ltd | Arts & recreation | 2019 |
| Ukvgames Ltd | Wholesale & retail | 2023 |
| Ullyott Homes Ltd | Real estate | 2025 |
| Ultigen Engineering Ltd | Manufacturing | 2016 |
| Ultimate Coaches Limited | Transport & logistics | 2012 |
| Ultimate Property Rentals Ltd | Real estate | 2025 |
| Ultimate PVC Windows & Doors Ltd | Construction | 2014 |
| Ultimate Safe Access Solutions Ltd | Construction | 2010 |
| Ultimate Spraying & Painting Services Ltd | Construction | 2022 |
| Ultra Endurance Series Ltd | Arts & recreation | 2011 |
| Ultrafast Digital Ltd | Information & communication | 2016 |
| Ultrasecure Fire & Security Limited | Administrative & support | 2024 |
| Ultraswage International Limited | Manufacturing | 1994 |
| Umar's Pizzas Ltd | Hospitality | 2019 |
| Umud's Ventures Ltd | Hospitality | 2023 |
| Unblinkered Thinking Ltd | Professional & scientific | 2026 |
| Under Pressure Exterior Cleaning Services Limited | Extraterritorial | 2022 |
| Underneath the Stars Festival C.I.C. | Arts & recreation | 2013 |
| Unfiltered Change Ltd | Professional & scientific | 2026 |
| Unfold Support Limited | Health & social care | 2025 |
| Unghianu Transport Ltd | Transport & logistics | 2020 |
| Uniconfort-Uk Limited | Manufacturing | 2015 |
| Unicorn Recruitment Limited | Professional & scientific | 2017 |
| Unioak Ltd | Wholesale & retail | 2014 |
| Union Jack Stores Limited | Extraterritorial | 2015 |
| Unique Bathroom Services Ltd | Wholesale & retail | 2023 |
| Unique Hair & Beauty Design Limited | Other services | 2019 |
| Unique Kitchen Services Limited | Construction | 2025 |
| Unique Nail Salons Limited | Other services | 2002 |
| Unique Race Cars Limited | Manufacturing | 2009 |
| Uniquehold Limited | Wholesale & retail | 1994 |
| United Tasty Fried Chicken Ltd | Hospitality | 2018 |
| Unity Garage (2018) Limited | Wholesale & retail | 2018 |
| Universal Components UK Limited | Wholesale & retail | 2004 |
| Universal Testing Solutions Limited | Professional & scientific | 2016 |
| Until 9 Ltd | Arts & recreation | 2025 |
| UP Marketing Ltd | Professional & scientific | 2013 |
| UP the Gains Limited | Information & communication | 2022 |
| Uphousing Ltd | Real estate | 2024 |
| Upland Technology Limited | Information & communication | 2005 |
| Upload Security Ltd | Administrative & support | 2023 |
| Upper Build Limited | Construction | 2019 |
| Upper Woodhead Estates Limited | Real estate | 2025 |
| Upper Woodhead Farms Limited | Agriculture & fishing | 2019 |
| Upton & Co Accountants Limited | Professional & scientific | 2017 |
| Upvc Aerosols Limited | Wholesale & retail | 2021 |
| Uradical Ltd | Information & communication | 2022 |
| Urban Project Construction Ltd | Construction | 2020 |
| Urban Project Events Ltd | Manufacturing | 2026 |
| Urbica Executive Search + Selection Limited | Administrative & support | 2012 |
| Urcaciu Services Ltd | Transport & logistics | 2025 |
| Urport Limited | Hospitality | 2011 |
| Ursa Logistic Limited | Transport & logistics | 2017 |
| USE Nook Limited | Hospitality | 2026 |
| Utility Consultancy & Engineering Limited | Professional & scientific | 2006 |
| Utley Installations Limited | Manufacturing | 2015 |
| UX Industries Limited | Wholesale & retail | 2021 |
| V & I Lettings Limited | Hospitality | 2014 |
| V & T (Plumbing & Heating Services) Limited | Construction | 1986 |
| V & V Health Innovations Ltd | Information & communication | 2018 |
| V B Building Services Ltd | Construction | 2012 |
| V D E Asset Management Limited | Wholesale & retail | 2010 |
| V Essential Limited | Wholesale & retail | 2023 |
| V.A.B Scaffolding Ltd | Construction | 2025 |
| Vaatje Limited | Professional & scientific | 2019 |
| Vale Properties (Yorkshire) Ltd | Real estate | 2025 |
| Valecrest Holdings Ltd | Real estate | 2026 |
| Vallance Properties Ltd | Real estate | 2023 |
| Valleyfield Textiles Ltd | Financial services | 2025 |
| Valtage Autos Ltd | Wholesale & retail | 2017 |
| Valterib Ltd | Administrative & support | 2025 |
| Van Abart Tarn Ltd | Transport & logistics | 2025 |
| Van Lining Solutions Ltd | Manufacturing | 2020 |
| Van Locks Yorkshire Ltd | Wholesale & retail | 2026 |
| Van Plus 1 Ltd | Transport & logistics | 2025 |
| Van Sanden Group Limited | Construction | 2003 |
| Vanguard Living History & Events Ltd | Administrative & support | 2025 |
| Vanillabel Ltd | Wholesale & retail | 2025 |
| Vans N Cars Limited | Wholesale & retail | 1999 |
| Vanshades Holdings Ltd | Financial services | 2023 |
| Vanshades Ltd | Manufacturing | 2015 |
| Vape Space Ltd | Wholesale & retail | 2024 |
| Vape Supermarket Ltd | Wholesale & retail | 2026 |
| Vapes Galore Limited | Wholesale & retail | 2024 |
| Vaping ALL Hours (Worsbrough) Limited | Wholesale & retail | 2018 |
| Vargas Bay Trustee Company Limited | Real estate | 1975 |
| Varns IT Ltd | Administrative & support | 2018 |
| Vavi's Convenience Store Ltd | Wholesale & retail | 2017 |
| VB Property Ventures Ltd | Real estate | 2021 |
| Vbc.Life Ltd | Wholesale & retail | 2021 |
| VBN Express Ltd | Wholesale & retail | 2016 |
| VCT Trading Limited | Wholesale & retail | 2024 |
| VDL BUS & Coach UK Limited | Wholesale & retail | 2021 |
| Vectolia Ltd | Wholesale & retail | 2026 |
| Vector Graphix Ltd | Extraterritorial | 2019 |
| Vectura VIP Ltd | Transport & logistics | 2024 |
| Veejay Ltd | Health & social care | 2022 |