| U.K. Guarding Group Limited | Professional & scientific | 1994 |
| U.K. Guarding Limited | Professional & scientific | 1994 |
| Uber Investments (Roads) Ltd | Construction | 2018 |
| Uber Investments Limited | Construction | 2015 |
| Ubhi Ventures Limited | Manufacturing | 2013 |
| UC Electrical (UK) Ltd | Construction | 2021 |
| UC Electrical Limited | Wholesale & retail | 2015 |
| Udeals Limited | Wholesale & retail | 2024 |
| UE HR Consultancy Limited | Administrative & support | 2017 |
| UF Ceilings Ltd | Construction | 2018 |
| Ufanutuk Ltd | Wholesale & retail | 2025 |
| UGO Johnson Limited | Real estate | 2014 |
| UGV Transport Ltd | Transport & logistics | 2022 |
| Ujasiri Limited | Professional & scientific | 2014 |
| UK - Operational Project Support Limited | Construction | 2005 |
| UK Allenton Barber Limited | Other services | 2026 |
| UK App PAY Limited | Information & communication | 2021 |
| UK Apparel Limited | Wholesale & retail | 2007 |
| UK Auto Centre Derby Limited | Wholesale & retail | 2019 |
| UK Bodywork Limited | Wholesale & retail | 2019 |
| UK Bola Ltd | Real estate | 2025 |
| UK Car Wash (AD) Ltd | Other services | 2018 |
| UK Circuits and Electronics Solutions Holdings Limited | Financial services | 2016 |
| UK Circuits and Electronics Solutions Limited | Manufacturing | 1997 |
| UK Clinical Reasoning in Medical Education Group Ltd | Education | 2023 |
| UK College of IT Ltd | Education | 2010 |
| UK Composites Ltd | Manufacturing | 2021 |
| UK Culture and Trade Exchange | Education | 2015 |
| UK Derby Properties Ltd | Real estate | 2022 |
| UK DF Trading Ltd | Wholesale & retail | 2024 |
| UK Disco Events Ltd | Arts & recreation | 2025 |
| UK Employment Tax Consultancy Ltd | Professional & scientific | 2010 |
| UK Fair Fashion Ltd | Wholesale & retail | 2020 |
| UK Fashion Home Limited | Wholesale & retail | 2026 |
| UK Gifting Ltd | Wholesale & retail | 2019 |
| UK Glazing Midlands Ltd | Construction | 2022 |
| UK Guarding Services Limited | Other services | 1994 |
| UK Hempcrete Ltd | Construction | 2015 |
| UK Law Consultancy Ltd | Professional & scientific | 2023 |
| UK Leather Handycraft Limited | Manufacturing | 2021 |
| UK Linkology Ltd | Professional & scientific | 2011 |
| UK Madinah Link Ltd | Administrative & support | 2026 |
| UK Master Driveways Ltd | Administrative & support | 2023 |
| UK Midland Limited | Wholesale & retail | 2021 |
| UK Midland Properties Ltd | Real estate | 2022 |
| UK Mini Market Derby Limited | Wholesale & retail | 2025 |
| UK Moneyman Limited | Financial services | 2009 |
| UK Power Engineering Ltd | Manufacturing | 2014 |
| UK Pro Land Reclamation Ltd | Construction | 2025 |
| UK Rehab Assist Limited | Health & social care | 2022 |
| UK Security Services Limited | Administrative & support | 2004 |
| UK Singh Ltd | Transport & logistics | 2025 |
| UK Site Services Derby Ltd | Construction | 2025 |
| UK Specialist Finance Limited | Financial services | 2025 |
| UK Steel Decking Limited | Construction | 2015 |
| UK Stone Direct Limited | Professional & scientific | 2017 |
| UK Swift Accounts Ltd | Financial services | 2023 |
| UK Trade Network Ltd | Wholesale & retail | 2018 |
| UK Translation Services Ltd | Professional & scientific | 2016 |
| UK Vehicle Logistics Limited | Financial services | 2003 |
| UK Vertex Ltd | Professional & scientific | 2024 |
| UK Visa Centre Ltd | Professional & scientific | 2014 |
| Ukcardz Ltd | Wholesale & retail | 2025 |
| UKD Diggers Ltd | Administrative & support | 2008 |
| Ukdua | Education | 2022 |
| Ukfob Ltd | Wholesale & retail | 2018 |
| UKM Products Limited | Manufacturing | 2011 |
| Ukmm Limited | Financial services | 2025 |
| Ukpharm Limited | Administrative & support | 2002 |
| Ukpresents Ltd | Administrative & support | 2018 |
| Uksd Stockyards Limited | Wholesale & retail | 2024 |
| UKV Nails Salon Limited | Other services | 2023 |
| Ultima Hospitality Limited | Professional & scientific | 2025 |
| Ultimate Builders Group Ltd | Construction | 2025 |
| Ultimate Flavour Ltd | Administrative & support | 2017 |
| Ultimate Heating Solutions Limited | Construction | 2022 |
| Ultimate ID Limited | Administrative & support | 2009 |
| Ultimate Vapes Limited | Wholesale & retail | 2022 |
| Ultra Adventures Ltd | Administrative & support | 2017 |
| Ultra Doey Ltd | Manufacturing | 2021 |
| Ultra Events International Ltd | Arts & recreation | 2019 |
| Ultra Events Ltd | Arts & recreation | 2012 |
| Ultra Fit Ladies Gym & Spa Birmingham Ltd | Arts & recreation | 2024 |
| Ultra Fit Ladies Gym Ltd | Arts & recreation | 2022 |
| Ultra High Ltd | Real estate | 2024 |
| Ultra Holdings Limited | Financial services | 2016 |
| Ultra Investments Derby Limited | Real estate | 2016 |
| Ultra Lyte Limited | Wholesale & retail | 2024 |
| Ultra Merchandise Limited | Wholesale & retail | 2020 |
| Ultra Physique Ladies Gyms Ltd | Arts & recreation | 2025 |
| Ultra Processing Ltd | Wholesale & retail | 2017 |
| Ultra Skill Limited | Wholesale & retail | 2024 |
| Ultra Sport Europe Ltd | Wholesale & retail | 1984 |
| Ultramql Limited | Information & communication | 2024 |
| Ultrascan Promotions Limited | Wholesale & retail | 1993 |
| Ultrasound Experts Ltd | Health & social care | 2021 |
| Ultrasport Ltd | Wholesale & retail | 2021 |
| Ultro Consulting Limited | Information & communication | 2007 |
| Uluwhite Global Ltd | Health & social care | 2023 |
| Umami Derby Ltd | Hospitality | 2025 |