| Ubisterling Limited | Wholesale & retail | 2017 |
| Ubrixofficial Ltd | Wholesale & retail | 2026 |
| UC1 Estates Limited | Real estate | 2024 |
| UCC SPV 01 Limited | Real estate | 2022 |
| Uddin Anaesthesia Ltd | Health & social care | 2025 |
| Uddin Sourcing Ltd | Administrative & support | 2025 |
| Udham Properties Limited | Real estate | 2017 |
| UF Vibe Outlet Ltd | Wholesale & retail | 2025 |
| Ufix Limited | Administrative & support | 2009 |
| UFJ Solutions Ltd | Transport & logistics | 2011 |
| UFK Cosmetics Ltd | Wholesale & retail | 2021 |
| UFK Group Limited | Financial services | 2022 |
| UFK Holdings Ltd | Extraterritorial | 2016 |
| UFK Trading Ltd | Wholesale & retail | 2019 |
| Uganda Limited | Administrative & support | 2025 |
| Ugraai Ltd | Information & communication | 2025 |
| Ugradar Properties Ltd | Real estate | 2020 |
| UHA Comms Limited | Wholesale & retail | 2025 |
| UHA Investments Limited | Real estate | 2022 |
| Ujaan Facility Ltd | Administrative & support | 2025 |
| Ujaan Logistics UK Ltd | Transport & logistics | 2025 |
| Ujaan Ltd | Other services | 2024 |
| Ujjwala Investment Ltd | Real estate | 2024 |
| UK 21 Ltd | Construction | 2017 |
| UK A.G. Tiling Ltd | Construction | 2018 |
| UK Accountant Online Ltd | Professional & scientific | 2021 |
| UK Accountants & Tax Ltd | Professional & scientific | 2024 |
| UK Apple Ltd | Information & communication | 2011 |
| UK Architectural Services Ltd | Professional & scientific | 2018 |
| UK Archiworks Ltd | Professional & scientific | 2025 |
| UK Bazar Ltd | Wholesale & retail | 2022 |
| UK Begun Ltd | Manufacturing | 2023 |
| UK Business Academy Ltd | Education | 2024 |
| UK Business Consultants Associate Ltd | Other services | 2021 |
| UK Care Services (Supported Living) Limited | Health & social care | 2017 |
| UK Carpentry and Building Services Ltd | Construction | 2015 |
| UK Chinese Opera Ltd | Extraterritorial | 2015 |
| UK Clean Energy Ltd | Other services | 2019 |
| UK College of Computing and Business Ltd | Professional & scientific | 2021 |
| UK Currency Expert Limited | Financial services | 2020 |
| UK Delta Engineers Ltd | Professional & scientific | 2021 |
| UK Design and Contractors Ltd | Construction | 2024 |
| UK Digidevs Ltd | Professional & scientific | 2024 |
| UK Direct Investor Limited | Construction | 2013 |
| UK Door 2 Door Cargo International Ltd | Transport & logistics | 2025 |
| UK DSK Limited | Wholesale & retail | 2022 |
| UK Eco Products UK Ltd | Manufacturing | 2024 |
| UK Ecomestate Ltd | Wholesale & retail | 2025 |
| UK Education C.I.C. | Education | 2011 |
| UK Education Hub Ltd | Education | 2020 |
| UK Electric Solution Ltd | Construction | 2022 |
| UK Electrician Limited | Construction | 2016 |
| UK Elite Chauffeurs Ltd | Transport & logistics | 2024 |
| UK Elite Services Ltd | Administrative & support | 2025 |
| UK Empire Group Holdings Ltd | Real estate | 2021 |
| UK Energy Insulation Ltd | Construction | 2023 |
| UK Energy Saving Ltd | Energy | 2025 |
| UK Entertainment Awards CIC | Arts & recreation | 2023 |
| UK Entertainment Network Limited | Wholesale & retail | 2015 |
| UK Estate Investors Ltd | Real estate | 2015 |
| UK Fair Price Removals Ltd | Transport & logistics | 2023 |
| UK Fast Track Limited | Construction | 2019 |
| UK Fawn Ltd | Wholesale & retail | 2024 |
| UK Fire Risk Assessments Limited | Financial services | 2021 |
| UK First Energy Ltd | Energy | 2021 |
| UK First Energy Solutions Ltd | Construction | 2020 |
| UK Flight Hub Ltd | Administrative & support | 2016 |
| UK Food & Shine Limited | Wholesale & retail | 2019 |
| UK Gasco Ltd | Construction | 2017 |
| UK Greener Days Ltd | Professional & scientific | 2025 |
| UK Health Care Support Ltd | Health & social care | 2023 |
| UK Healthcare Pharma Limited | Manufacturing | 2010 |
| UK Hindu Welfare Association Ltd | Health & social care | 2022 |
| UK Immigration & Business Advisors Ltd | Other services | 2009 |
| UK Italian Jewellery Ltd | Wholesale & retail | 2026 |
| UK Japan Motors Ltd | Wholesale & retail | 2024 |
| UK Law & Business Services Ltd | Information & communication | 2022 |
| UK Law Associates Ltd | Professional & scientific | 2010 |
| UK Law Limited | Professional & scientific | 2008 |
| UK License Theory Ltd | Information & communication | 2024 |
| UK Linen Limited | Other services | 2009 |
| UK Lubricants Ltd | Wholesale & retail | 2024 |
| UK Management Academy Ltd | Professional & scientific | 2017 |
| UK Management and Academic Services Ltd | Professional & scientific | 2023 |
| UK Marketing Services Ltd | Other services | 2021 |
| UK Maxx Ltd | Wholesale & retail | 2020 |
| UK Metropolitan College Limited | Education | 2019 |
| UK Mobile Techs Ltd | Other services | 2024 |
| UK Motor Centre Ltd | Wholesale & retail | 2015 |
| UK Nationwide Limited | Administrative & support | 2011 |
| UK One Stop Sales Ltd | Wholesale & retail | 2022 |
| UK Parcels Ltd | Wholesale & retail | 2020 |
| UK Property Claims Ltd | Administrative & support | 2024 |
| UK Property Empire Limited | Real estate | 2018 |
| UK Removal & Logistics Ltd | Transport & logistics | 2024 |
| UK Said Care Ltd | Administrative & support | 2024 |
| UK Security Store Limited | Manufacturing | 2009 |
| UK Sequoia International Import and Export Limited | Professional & scientific | 2024 |
| UK Shop Online Ltd | Wholesale & retail | 2024 |
| UK SKM Limited | Wholesale & retail | 2021 |