| Two Chicks Limited | Extraterritorial | 2007 |
| Twyo Consulting Limited | Professional & scientific | 2020 |
| Twywell Developments Limited | Construction | 2015 |
| Tykes Developments Limited | Real estate | 2003 |
| Tyler Banfield Window Cleaning Ltd | Administrative & support | 2021 |
| Tylers Consulting Services Limited | Information & communication | 2021 |
| Typestart Limited | Manufacturing | 2003 |
| Tyre Flex Limited | Wholesale & retail | 2025 |
| Tyre Revivers Limited | Real estate | 1970 |
| Tyre Shop Kettering Ltd | Wholesale & retail | 2026 |
| Tyreroom Ltd | Wholesale & retail | 2024 |
| Ubique GAS Heating Services Limited | Professional & scientific | 2011 |
| Ubuy DIY Alarms Limited | Administrative & support | 2009 |
| UFO Services Ltd | Construction | 2025 |
| UK Assets Holdings Ltd | Wholesale & retail | 2025 |
| UK Canopies Limited | Manufacturing | 2019 |
| UK Green Sunflowers C.I.C. | Other services | 2025 |
| UK Gutter Cleaning Network Ltd | Administrative & support | 2020 |
| UK HBH Ltd | Other services | 2024 |
| UK Investment Property Management Limited | Real estate | 2006 |
| UK Textile Recycling Limited | Water & waste | 2010 |
| Uk-Cnn Ltd | Construction | 2014 |
| Ukhomesurveys Limited | Administrative & support | 2025 |
| Ulan Group Ltd | Construction | 2024 |
| Ullswater Heating Limited | Construction | 2026 |
| Ultimate Communications Ltd | Wholesale & retail | 2020 |
| Ultimate Finesse Limited | Arts & recreation | 2017 |
| Ultimate Rallies Limited | Arts & recreation | 2017 |
| Ulug Limited | Wholesale & retail | 2020 |
| Umbrella Technologies Limited | Financial services | 2011 |
| Uncle Acid Music Ltd | Arts & recreation | 2014 |
| Underwood & Beeby Limited | Construction | 1965 |
| Union Road Surfacing Limited | Construction | 2017 |
| Uniq Solutions Limited | Administrative & support | 2016 |
| Unique Engineering Installations Ltd | Professional & scientific | 2025 |
| Unique Homes (Northants) Ltd | Real estate | 2024 |
| Uniquenow Ltd | Wholesale & retail | 2026 |
| Unisolve Ltd | Financial services | 2003 |
| Unit 8 Training Ltd | Arts & recreation | 2023 |
| Unit One Performance Ltd | Wholesale & retail | 2025 |
| Unity Corporate Ltd | Administrative & support | 2025 |
| Unity Traders Ltd | Wholesale & retail | 2014 |
| Universal Shop Ltd | Wholesale & retail | 2018 |
| Unumbox Limited | Information & communication | 2015 |
| Unwin Holdings Ltd. | Financial services | 2015 |
| UP Group Nottingham Ltd | Transport & logistics | 2026 |
| UP Trend Mart Ltd | Wholesale & retail | 2024 |
| Upkeep Contracts Limited | Construction | 2021 |
| Upkeep Electrical Limited | Administrative & support | 2025 |
| Uplabel Limited | Wholesale & retail | 2020 |
| Uplands Farms Limited | Agriculture & fishing | 1981 |
| Uppstages Limited | Arts & recreation | 2018 |
| Uptt Limited | Education | 2020 |
| Urban Exterior Specialist Ltd | Administrative & support | 2026 |
| Urban Nest Homes Ltd | Construction | 2024 |
| Urbanskys Stays Ltd | Real estate | 2024 |
| Urbascape Limited | Construction | 2023 |
| Ursalis Ltd | Wholesale & retail | 2025 |
| Ursusmaj Software Limited | Information & communication | 2001 |
| Uspco Ltd. | Administrative & support | 2014 |
| Utensils Store Ltd | Wholesale & retail | 2026 |
| Utilivation Ltd | Financial services | 2024 |
| V&O Cleaning Ltd | Administrative & support | 2024 |
| V&P Consultancy Limited | Health & social care | 2021 |
| V&S Property Ltd | Real estate | 2019 |
| V7 Services Ltd | Administrative & support | 2014 |
| Vacation Rental Group Holdings Limited | Professional & scientific | 1989 |
| Valandra Property Limited | Real estate | 2022 |
| Valentine Lane Management Company Ltd | Real estate | 2021 |
| Vales Trans Limited | Transport & logistics | 2025 |
| Vali's Transport Limited | Transport & logistics | 2018 |
| Valley Cooling Solutions Ltd | Administrative & support | 2025 |
| Valley Hvac Solutions Ltd | Administrative & support | 2021 |
| Valoris Recycling Ltd | Wholesale & retail | 2026 |
| Valueto Ltd | Real estate | 2017 |
| Valueun Ltd | Real estate | 2017 |
| Vanami Limited | Construction | 2004 |
| Vanguard Financial Consultants Ltd | Professional & scientific | 2024 |
| Vanish Point Farm Limited | Agriculture & fishing | 2012 |
| Vanisha Limited | Wholesale & retail | 2005 |
| Vape Junkies Ltd | Wholesale & retail | 2017 |
| Varmeego (UK) Limited | Information & communication | 2022 |
| Vasana Properties Ltd | Real estate | 2024 |
| VDM Way Ltd | Transport & logistics | 2018 |
| Vega Adventures Limited | Transport & logistics | 2006 |
| Vega Planning Services Limited | Construction | 2022 |
| VEL Construction Group Ltd | Construction | 2026 |
| Veloria Commerce Limited | Wholesale & retail | 2026 |
| Veltrixon Dynamics Ltd | Wholesale & retail | 2026 |
| Velvet Mortgage & Insure Services Ltd | Financial services | 2013 |
| VEN Ways Limited | Transport & logistics | 2015 |
| Venji Ltd | Real estate | 2026 |
| Venn Capital Ltd | Financial services | 2025 |
| Venture Dental Practice Limited | Health & social care | 2020 |
| Venture INV Limited | Financial services | 2022 |
| Ventus Developments Limited | Construction | 2021 |
| Venuum Limited | Wholesale & retail | 2024 |
| Venuum Property Holdings Ltd | Real estate | 2025 |
| Veosveos Ltd | Transport & logistics | 2023 |
| Verconder Ltd | Financial services | 2017 |