| Ubiz Business Promotions Ltd | Information & communication | 2019 |
| Ubrighten Wedding Lights Limited | Professional & scientific | 2025 |
| Uddinhome Limited | Real estate | 2021 |
| UF1RST Limited | Professional & scientific | 2022 |
| Ufic SPV Ltd | Real estate | 2017 |
| Ufix Enterprise Ltd | Wholesale & retail | 2016 |
| UFM Properties Ltd | Real estate | 2019 |
| Uform Ltd | Administrative & support | 2011 |
| UGO Corp Ltd | Wholesale & retail | 2026 |
| Ugochikwu Limited | Transport & logistics | 2015 |
| Ugombros Limited | Health & social care | 2022 |
| UGR UK Tuning Ltd | Manufacturing | 2024 |
| UHM Traders Ltd | Wholesale & retail | 2025 |
| Uiiss Management Ltd | Real estate | 2026 |
| UJ Wholesale Ltd | Wholesale & retail | 2023 |
| Ujat Ltd | Wholesale & retail | 2026 |
| Ujjwal Building Construction Ltd | Construction | 2023 |
| UJY Ltd | Transport & logistics | 2018 |
| UK & Beyond Travel Ltd | Hospitality | 2025 |
| UK Airport Trips Ltd | Transport & logistics | 2026 |
| UK Auto Car Services Ltd | Wholesale & retail | 2025 |
| UK Bargain Centre Limited | Wholesale & retail | 2024 |
| UK Base Motors Limited | Wholesale & retail | 2025 |
| UK Boiler Experts Ltd | Manufacturing | 2025 |
| UK Box Supplies Limited | Wholesale & retail | 2024 |
| UK Boyz Ltd | Wholesale & retail | 2023 |
| UK Business & Science College Limited | Education | 2023 |
| UK Business College Ltd | Education | 2012 |
| UK Carz Limited | Wholesale & retail | 2014 |
| UK Certification Solutions Ltd | Professional & scientific | 2024 |
| UK Clearance Limited | Wholesale & retail | 2026 |
| UK Cloud 9 Ltd | Wholesale & retail | 2022 |
| UK Consortium Ltd | Administrative & support | 2021 |
| UK Dream Motors Limited | Wholesale & retail | 2022 |
| UK Driving Solutions Limited | Education | 2024 |
| UK E-Scooter Ltd | Wholesale & retail | 2019 |
| UK Esila Ltd | Hospitality | 2026 |
| UK Estate Holdings Ltd | Real estate | 2022 |
| UK Executive Service Ltd | Professional & scientific | 2017 |
| UK F Pizza Ltd | Hospitality | 2023 |
| UK Fitness Challenge Limited | Arts & recreation | 2021 |
| UK Gold Limited | Wholesale & retail | 2024 |
| UK Gulf Capital Limited | Real estate | 2017 |
| UK Halal & Meat Ltd | Wholesale & retail | 2023 |
| UK Halal Ltd | Administrative & support | 2017 |
| UK Horizon Investments Limited | Real estate | 2018 |
| UK Hybrid Automotive Luton Limited | Wholesale & retail | 2025 |
| UK Iconic Solutions Ltd | Professional & scientific | 2024 |
| UK Innovator Company Limited | Hospitality | 2024 |
| UK Interpreting Ltd | Transport & logistics | 2018 |
| UK JBS Limited | Construction | 2021 |
| UK Landmark Group Ltd | Real estate | 2023 |
| UK Lions Limited | Transport & logistics | 2019 |
| UK Luxury Chauffeurs Ltd | Other services | 2025 |
| UK Migration Services Ltd | Professional & scientific | 2022 |
| UK Motor Factors Limited | Wholesale & retail | 2017 |
| UK Paragon Properties Ltd | Real estate | 2024 |
| UK Performance Sales and Hire Limited | Wholesale & retail | 2020 |
| UK Residential Investors Ltd | Real estate | 2017 |
| UK Salt Ltd | Wholesale & retail | 2019 |
| UK Shopping Centre Ltd | Wholesale & retail | 2021 |
| UK Skills Supply Ltd | Administrative & support | 2008 |
| UK Smart Skills Ltd | Administrative & support | 2019 |
| UK Storage Installations Limited | Construction | 2017 |
| UK Support Housing Ltd | Health & social care | 2026 |
| UK Surgical Solutions Ltd | Manufacturing | 2023 |
| UK TEC Trading Limited | Administrative & support | 2019 |
| UK Thowheed Jamaath | Health & social care | 2022 |
| UK Travelz Ltd. | Administrative & support | 2020 |
| UK Umrah Services Ltd | Hospitality | 2025 |
| UK Unique Solution Ltd | Professional & scientific | 2025 |
| UK VAPES2 Limited | Wholesale & retail | 2024 |
| UK Wide Transfers Ltd | Transport & logistics | 2026 |
| UK World Trade Limited | Extraterritorial | 2015 |
| UK Zones Ltd | Transport & logistics | 2018 |
| Uk-Bangla Properties Ltd | Households | 2021 |
| Uk-Ehc Ltd | Extraterritorial | 2024 |
| UK2MSIA Authentic Ltd | Wholesale & retail | 2021 |
| Ukan Holdings Ltd | Real estate | 2017 |
| Ukan Investments Ltd | Real estate | 2018 |
| Ukbd App Ltd | Wholesale & retail | 2022 |
| Ukdemand Limited | Administrative & support | 2024 |
| Ukeu Motors Ltd | Wholesale & retail | 2025 |
| Ukeys Holder Company Ltd | Households | 2021 |
| Ukguardian Force Ltd | Administrative & support | 2025 |
| Ukia Consultancy Ltd | Professional & scientific | 2019 |
| Ukmots Ltd | Wholesale & retail | 2013 |
| Ukpass Clinical Courses Ltd | Public administration | 2023 |
| UKR Express Limited | Wholesale & retail | 2023 |
| Ukspec Ltd. | Wholesale & retail | 2014 |
| Ukstream Ltd | Transport & logistics | 2023 |
| Ulearna Technology Ltd | Information & communication | 2024 |
| ULIFE360 Ltd | Wholesale & retail | 2024 |
| Ultimate Beauty Luton Ltd | Other services | 2025 |
| Ultimate Connexions Limited | Real estate | 1997 |
| Ultimate Connexions Sales & Commercials Limited | Real estate | 2017 |
| Ultimate Consultancy Solutions Ltd | Professional & scientific | 2019 |
| Ultimate Easy Solution Ltd | Information & communication | 2019 |
| Ultimate Email Ltd | Information & communication | 2012 |
| Ultimate Fine Thread Co Ltd | Wholesale & retail | 2025 |