| Twelfth Consulting Limited | Professional & scientific | 2021 |
| Twenty Four Legal Ltd | Professional & scientific | 2024 |
| Twenty Three (UK) Limited | Wholesale & retail | 2003 |
| Twilight Fragrances Limited | Wholesale & retail | 2020 |
| TX Associates Limited | Professional & scientific | 2015 |
| TXY MAX Limited | Real estate | 2016 |
| Tyre Centre Plus Ltd | Wholesale & retail | 2021 |
| Tyre Mate UK Ltd | Administrative & support | 2019 |
| Tyres Easily Limited | Administrative & support | 2013 |
| U T Trade Ltd | Wholesale & retail | 2026 |
| U&I Builders Ltd | Construction | 2017 |
| UC Elegance Ltd | Wholesale & retail | 2010 |
| UC Link Ltd | Hospitality | 2026 |
| Ucpf Ltd | Wholesale & retail | 2022 |
| Ucrane Limited | Real estate | 2025 |
| UDL Properties Ltd | Hospitality | 1996 |
| Ugam Exports Ltd | Wholesale & retail | 2025 |
| UK Academy for Science and Technology Ltd | Education | 2024 |
| UK Akkreditation and Certification Board Limited | Professional & scientific | 2020 |
| UK Blinds Direct Limited | Construction | 2007 |
| UK Brother's Limited | Wholesale & retail | 2022 |
| UK China Tourism Culture Association Ltd | Administrative & support | 2018 |
| UK Drycleaners Ltd | Other services | 2016 |
| UK Global Certification & Inspection Limited | Professional & scientific | 2020 |
| UK Health & Fitness Solutions Ltd | Other services | 2013 |
| UK Hilda Ltd | Wholesale & retail | 2026 |
| UK Hybrid Motors Ltd | Wholesale & retail | 2023 |
| UK International Education and Training Ltd | Education | 2025 |
| UK Meiyou Technology Co., Ltd. | Administrative & support | 2023 |
| UK Mobile World Limited | Wholesale & retail | 2009 |
| UK Platinum Home Care Services Limited | Financial services | 2020 |
| UK Quality Goods Ltd | Wholesale & retail | 2025 |
| UK Soft Solutions Ltd | Information & communication | 2019 |
| UK Software Solution Ltd | Information & communication | 2022 |
| UK Steel Fabricators Limited | Construction | 2013 |
| UK Trucks & Parts Ltd | Wholesale & retail | 2025 |
| Uk's ALL in One Ltd | Wholesale & retail | 2015 |
| Uk-Es Property Management Ltd | Real estate | 2022 |
| Ukfx Holdings Ltd | Administrative & support | 2008 |
| Ukrainian Children SOS Community Interest Company | Administrative & support | 2022 |
| Ultimate Entertainers Ltd | Administrative & support | 2022 |
| Uncle Bobs Aesthetics Ltd | Health & social care | 2020 |
| Underground Tattoo Limited | Wholesale & retail | 2013 |
| UNI of West Bristol for Continuous Learning Ltd | Education | 2024 |
| Unic Contractors Ltd | Construction | 2016 |
| Unicentrix Estates Limited | Real estate | 2019 |
| Unicentrix Limited | Wholesale & retail | 2012 |
| Unicon Property Management & Real Estate Ltd | Real estate | 2018 |
| Uniq 11+ Tuition Ltd | Education | 2017 |
| Uniqe Tiles UK Limited | Construction | 2019 |
| Unique & Stuff Ltd | Wholesale & retail | 2017 |
| Unique Developers Limited | Construction | 2018 |
| Unique Roofing Solutions Limited | Construction | 2021 |
| Unique Solutions (South) Limited | Construction | 2010 |
| Unit Locations Ltd | Information & communication | 2018 |
| United Brain Networks Limited | Information & communication | 2010 |
| United Contracting Company (Private) Limited | Construction | 2025 |
| United Kitchen Solutions Ltd | Construction | 2014 |
| Universal Kiosk Limited | Wholesale & retail | 2019 |
| Universal Medical AID Ltd | Health & social care | 2024 |
| Universal Warehouse Ltd. | Wholesale & retail | 2014 |
| Upholstery Village Ltd | Manufacturing | 2024 |
| Upton Grey Ltd | Wholesale & retail | 2011 |
| Urban Brick Yard Company Ltd | Real estate | 2025 |
| Urban Flame Kitchen Ltd | Hospitality | 2026 |
| Urban Host Co. Ltd | Hospitality | 2026 |
| Urban IQ Ventures Limited | Real estate | 2024 |
| Urban UK Holdings Ltd | Wholesale & retail | 2022 |
| Urban View Rentals Limited | Administrative & support | 2024 |
| Urtronics Technology Co., Limited | Administrative & support | 2023 |
| UTP Plumbing & Heating Limited | Construction | 2024 |
| UTU Trading UK Limited | Hospitality | 2018 |
| Uxbridge Car Rental Limited | Administrative & support | 2020 |
| Uzito Global Campus Ltd | Education | 2018 |
| V R Bronze Boutique Limited | Administrative & support | 2018 |
| V&N Properties Ltd | Real estate | 2025 |
| V-Design CAD Services Ltd | Professional & scientific | 2014 |
| V.G. Clements Limited | Construction | 1990 |
| V.G.C. Construction Limited | Construction | 1988 |
| V.G.Clements (Contractors) Limited | Administrative & support | 1960 |
| V2 Accounting Limited | Professional & scientific | 2004 |
| Vagabond Production Design Limited | Arts & recreation | 2018 |
| Vaks Bricks Ltd | Real estate | 2023 |
| Valentinos Displays Ltd | Wholesale & retail | 2010 |
| Valiant House Properties Limited | Real estate | 1995 |
| Valora Restaurants Limited | Hospitality | 2026 |
| Valorem Creators Limited | Extraterritorial | 2022 |
| Valtieri Limited | Hospitality | 2026 |
| Valuebay Ltd | Wholesale & retail | 2022 |
| VALUEX2 Limited | Other services | 2022 |
| Vamadevan Property Limited | Real estate | 2025 |
| Vamoose Cleaning Services Limited | Other services | 2018 |
| Van Storage Centre Limited | Transport & logistics | 2019 |
| Van Zulu Investments Limited | Real estate | 2017 |
| Vanguard Learning Trust | Education | 2011 |
| Vanij Ltd | Wholesale & retail | 2024 |
| Vantagesoft Limited | Information & communication | 2007 |
| Varniraj Limited | Wholesale & retail | 2018 |
| Vasan Civil Engineering Ltd | Construction | 2022 |
| Vault Construction Limited | Construction | 2010 |