| Truecare Health Ltd | Health & social care | 2014 |
| Trusha Limited | Wholesale & retail | 2025 |
| Trusted Trades Ltd | Other services | 2023 |
| TS Properties Investment Limited | Real estate | 2022 |
| Ttech Autos Limited | Wholesale & retail | 2011 |
| Tuga Driving School Limited | Education | 2015 |
| Tuitionteach Ltd | Information & communication | 2019 |
| Tulasizwe Limited | Health & social care | 2019 |
| Tunzh Limited | Health & social care | 2021 |
| Tutoring Angels Ltd | Education | 2023 |
| Twin Flame GAS Ltd | Construction | 2025 |
| Twinkle Tops Ltd | Construction | 2021 |
| Twins Brandao Logistics Ltd | Transport & logistics | 2024 |
| Two Brothers Spice Limited | Manufacturing | 2021 |
| Two Sisters Sparkle Co Ltd | Administrative & support | 2026 |
| Twolines Ltd | Construction | 2024 |
| TWR Velo Ltd | Wholesale & retail | 2024 |
| Tyre Circle Limited | Wholesale & retail | 2013 |
| Tysoccam Limited | Real estate | 2019 |
| Tyson’S Confectionary Ltd | Wholesale & retail | 2025 |
| U Elite Care Ltd | Health & social care | 2015 |
| UA Builders Ltd | Construction | 2024 |
| Uaco Ltd | Transport & logistics | 2026 |
| Uai-So Ltd | Transport & logistics | 2019 |
| Uai-So Motorcycle Ltd | Administrative & support | 2021 |
| UB Driving Ltd | Education | 2022 |
| UB Secure Building and Property Management Ltd | Construction | 2024 |
| Uber Payroll Ltd | Administrative & support | 2017 |
| Uddin Capital Holdings Ltd | Financial services | 2025 |
| Uddin Healthcare Limited | Health & social care | 2020 |
| UFS Traders Ltd | Wholesale & retail | 2025 |
| UH Group Ltd | Wholesale & retail | 2017 |
| UK & European Construction Ltd | Construction | 1997 |
| UK Bazaar Limited | Wholesale & retail | 2018 |
| UK Business Development and Support Limited | Administrative & support | 2016 |
| UK Euro ARC Ltd | Wholesale & retail | 2025 |
| UK Fone City Ltd | Real estate | 2010 |
| UK Mobile Stock Limited | Wholesale & retail | 2025 |
| UK Motors Services Limited | Wholesale & retail | 2020 |
| UK Network Systems Limited | Professional & scientific | 2012 |
| UKAAA5 Ltd | Real estate | 2026 |
| Ukbk Ltd | Wholesale & retail | 2026 |
| Ukgh Limited | Administrative & support | 2017 |
| Ukrac Ltd | Other services | 2020 |
| Ukrainian Construction Ltd | Construction | 2014 |
| Ultra Coatings Ltd | Construction | 2014 |
| UM Elite Secure Ltd | Administrative & support | 2026 |
| Umad Fashion Ltd | Wholesale & retail | 2024 |
| Umairsons Ltd | Wholesale & retail | 2026 |
| Umaiza Traders Ltd | Wholesale & retail | 2025 |
| UN Builders Limited | Real estate | 2014 |
| Unaz Medics Ltd | Health & social care | 2024 |
| Under HIS Shelter Ltd | Financial services | 2026 |
| Unestu CIC | Real estate | 2024 |
| Unfooled Limited | Wholesale & retail | 2025 |
| UNI ( Business Group ) Limited | Wholesale & retail | 2017 |
| Unic Ltd | Other services | 2025 |
| Unicorn Byte Ltd | Information & communication | 2016 |
| Uniforgea Ltd | Information & communication | 2026 |
| Uninhibited Development Solutions Ltd | Information & communication | 2025 |
| Union Developers Limited | Real estate | 2020 |
| Unionbuy Limited | Wholesale & retail | 2025 |
| Uniontec Limited | Administrative & support | 2014 |
| Unipull Systems Limited | Manufacturing | 2026 |
| United Management (PDA) Limited | Administrative & support | 2011 |
| United Pest Control Ltd | Administrative & support | 2020 |
| United Property Developers Limited | Real estate | 1997 |
| United Yemeni British Community Ltd | Health & social care | 2026 |
| Unity Care Living Ltd | Real estate | 2024 |
| Unity Foundation C.I.C. | Health & social care | 2025 |
| Unitycare Health Care Limited | Health & social care | 2026 |
| Universal Consortium Ltd | Real estate | 2022 |
| Universal Infinite Minds Limited | Transport & logistics | 2023 |
| Universal Leaflet Distributors Limited | Professional & scientific | 2018 |
| Universal Shield Protection Services Limited | Other services | 2017 |
| UNSTR8 Limited | Other services | 2023 |
| Up-A-Cut Unisex Hair Salon Limited | Other services | 2015 |
| Up-A-Cutt Unisex Hair Salon Ltd | Other services | 2025 |
| Uptimism Limited | Administrative & support | 2020 |
| UQ Services Limited | Wholesale & retail | 2025 |
| Urbanedge Marketplace Limited | Wholesale & retail | 2025 |
| Urbanline Consortium Limited | Construction | 2022 |
| Urfreshtvsport Limited | Information & communication | 2020 |
| Usman Haider Ltd | Wholesale & retail | 2025 |
| Usmanecomrcecompany Ltd | Manufacturing | 2026 |
| Utilities Solutions Limited | Professional & scientific | 2018 |
| V & S N Services Ltd | Administrative & support | 2019 |
| V&D Perfect Cleaning Ltd | Administrative & support | 2022 |
| V&N Services Ltd | Construction | 2021 |
| V&V Express Ltd | Transport & logistics | 2024 |
| V.I.D. Construction Limited | Construction | 2011 |
| Vaikovam.Uk Ltd | Wholesale & retail | 2025 |
| Vakolayas Ltd | Real estate | 2017 |
| Valar Mode Ltd | Information & communication | 2025 |
| Valcrest Housing Ltd | Real estate | 2026 |
| Value Wolt Ltd | Professional & scientific | 2025 |
| Valued Healthcare Group Limited | Administrative & support | 2024 |
| Vands Logistics Ltd | Transport & logistics | 2020 |
| Vanilla Coco Ltd | Professional & scientific | 2023 |
| Vannam Akka and Laxmi Limited | Manufacturing | 2023 |