| Uhoptics Ltd | Wholesale & retail | 2026 |
| UHS Pharma Ltd | Health & social care | 2022 |
| UI Services Ltd | Financial services | 2019 |
| Uirtas Ltd | Financial services | 2019 |
| UK - Hsah Limited | Hospitality | 2025 |
| UK Art Car Sales Limited | Wholesale & retail | 2017 |
| UK Asia Investments Ltd | Households | 2025 |
| UK Asia Trading Ltd | Wholesale & retail | 2012 |
| UK Aura Haus Ltd | Wholesale & retail | 2026 |
| UK Auto Imports Ltd | Wholesale & retail | 2026 |
| UK Autohaus Defined Ltd | Wholesale & retail | 2025 |
| UK Blinds and Painters Ltd | Manufacturing | 2024 |
| UK Bookfest Limited | Wholesale & retail | 2026 |
| UK Built Ltd | Construction | 2021 |
| UK Car Registration Services Ltd | Wholesale & retail | 2023 |
| UK Catering Parts Limited | Wholesale & retail | 2023 |
| UK Cloud Solutions Limited | Information & communication | 2025 |
| UK College of English Language Ltd | Real estate | 2022 |
| UK Counselling Network C.I.C. | Health & social care | 2018 |
| UK Desserts Limited | Hospitality | 2017 |
| UK Distribution Direct Limited | Transport & logistics | 2018 |
| UK Dog Handlers Ltd | Administrative & support | 2011 |
| UK Ecosmart Limited | Wholesale & retail | 2021 |
| UK Energy Supplies Limited | Professional & scientific | 2023 |
| UK Exchange Travel Agency Ltd | Administrative & support | 2018 |
| UK Express Stores Ltd | Wholesale & retail | 2025 |
| UK Fashion Sofas Ltd | Manufacturing | 2025 |
| UK Foods Mini Market Ltd | Wholesale & retail | 2023 |
| UK Garden Tech Solutions Ltd | Wholesale & retail | 2021 |
| UK Groundworks Limited | Construction | 2022 |
| UK Halal Meat Ltd | Wholesale & retail | 2021 |
| UK Haven Ltd | Wholesale & retail | 2025 |
| UK Health Focus Ltd | Health & social care | 2018 |
| UK Heating Grants Ltd | Construction | 2021 |
| UK Investments Yorkshire Ltd | Real estate | 2025 |
| UK Isom Ltd | Wholesale & retail | 2026 |
| UK Kianis Ltd | Real estate | 2024 |
| UK Learning Academy Limited | Education | 2007 |
| UK Legal Consulting Ltd | Professional & scientific | 2017 |
| UK Luxury Travel Ltd | Administrative & support | 2017 |
| UK Managerial Services Limited | Administrative & support | 2017 |
| UK Memorial Services Limited | Other services | 2022 |
| UK Mental Health Solutions Ltd | Health & social care | 2022 |
| UK Narrow Escapes Limited | Hospitality | 2015 |
| UK Ollywood Limited | Information & communication | 2020 |
| UK Online Deals Ltd | Wholesale & retail | 2021 |
| UK Parts 1988 Limited | Wholesale & retail | 2021 |
| UK Pizza Bites Limited | Hospitality | 2026 |
| UK Prime Study Centre Ltd | Education | 2022 |
| UK Property Utilities Limited | Real estate | 2025 |
| UK Rain Clean Ltd | Administrative & support | 2020 |
| UK Rentals Services Limited | Real estate | 2023 |
| UK Seatpro Events Limited | Wholesale & retail | 2025 |
| UK Secure Solutions Limited | Professional & scientific | 2025 |
| UK Shaz Travel Ltd | Transport & logistics | 2023 |
| UK Shield Ltd. | Other services | 2016 |
| UK SK Property Ltd | Real estate | 2025 |
| UK Steel Stockholders Limited | Extraterritorial | 1995 |
| UK Storage Beds Ltd | Manufacturing | 2024 |
| UK Surplus Ltd | Extraterritorial | 2009 |
| UK Tax Associates Limited | Professional & scientific | 2012 |
| UK Tax Bookkeeper Ltd | Professional & scientific | 2018 |
| UK Tax Investments Ltd | Real estate | 2016 |
| UK Till Roll Ltd | Other services | 2023 |
| UK Trade Services Ltd | Construction | 2025 |
| UK Travel World Limited | Administrative & support | 2022 |
| UK Vape Dawg Ltd | Wholesale & retail | 2024 |
| UK Velour Ltd | Wholesale & retail | 2025 |
| UK Visa and Immigration Law Ltd | Extraterritorial | 2020 |
| UK Windows & Doors Ltd | Wholesale & retail | 2011 |
| Uk&European Consultancy 1LTD Ltd | Professional & scientific | 2025 |
| Uk&European Consultancy Ltd | Administrative & support | 2026 |
| Uk's Capital Ltd | Real estate | 2024 |
| UK1 Services Limited | Other services | 2019 |
| UK2WESTAFRICA Adventure Challenge Ltd | Administrative & support | 2026 |
| Ukcare 247 Ltd | Health & social care | 2024 |
| Ukfc Morley Street Ltd | Hospitality | 2026 |
| Ukfcleeds Ltd | Hospitality | 2025 |
| Ukhhq Limited | Arts & recreation | 2025 |
| UKI Investments Ltd | Real estate | 2023 |
| UKS Sports Board of Control (Sbofc) World's Sports Board of Control Limited | Financial services | 2022 |
| Uksa Consulting Ltd | Professional & scientific | 2019 |
| Ukths Ltd | Wholesale & retail | 2024 |
| Uktradepros Ltd | Construction | 2024 |
| UKZ Blinds Ltd | Manufacturing | 2021 |
| UL HAQ Ltd | Information & communication | 2008 |
| Ulcat Ltd | Real estate | 2020 |
| Ulfinite Limited | Professional & scientific | 2020 |
| Ulixes Limited | Professional & scientific | 2007 |
| Ullah Brothers Limited | Wholesale & retail | 2018 |
| Ultimate Fireworks Yorkshire Ltd | Wholesale & retail | 2025 |
| Ultimate Hairs & Beauty Limited | Other services | 2024 |
| Ultimate Health Solutions Limited | Hospitality | 2015 |
| Ultimate Travel Solutions Ltd | Transport & logistics | 2023 |
| Ultimatezones Ltd | Wholesale & retail | 2025 |
| Ultra R S Motors Limited | Wholesale & retail | 2016 |
| Ultrafix Construction Bradford Limited | Other services | 2026 |
| Ultrafix Construction Ltd | Other services | 2024 |
| UM Finance Limited | Professional & scientific | 2016 |
| Umair & ALI Co Ltd | Wholesale & retail | 2024 |