| TW GBS Ltd | Construction | 2016 |
| Twelve SIX Consulting Ltd | Professional & scientific | 2022 |
| Twelversolutions Ltd | Information & communication | 2021 |
| Twin Tyres Limited | Wholesale & retail | 2018 |
| Twinkle Safe Limited | Wholesale & retail | 2025 |
| Twins & DAD Tapers Ltd | Construction | 2021 |
| Twist Management Solutions UK Ltd | Construction | 2007 |
| Two Daughters Ethical Care Ltd | Health & social care | 2024 |
| Two Sons Two Daughters Ltd | Professional & scientific | 2019 |
| Tycoon Mart Ltd | Wholesale & retail | 2025 |
| Tyre Collection Channel Limited | Manufacturing | 2014 |
| Tyres & Repairs Ltd | Wholesale & retail | 2026 |
| Tyrique and Tariq Ltd | Real estate | 2024 |
| Tyroprep Ltd | Real estate | 2026 |
| UAT Private Hire Ltd | Transport & logistics | 2025 |
| UC Innovations Ltd | Wholesale & retail | 2025 |
| UK Degree Online Ltd | Education | 2023 |
| UK Mehr and Sons Traders Ltd | Administrative & support | 2019 |
| UK Mehr Traders Ltd | Professional & scientific | 2019 |
| UK Property Consultancy Services Ltd | Real estate | 2007 |
| UK1 Enterprise Ltd | Wholesale & retail | 2025 |
| Uktj Limited | Other services | 2019 |
| Ultimate Contracting & Logistics Ltd | Professional & scientific | 2015 |
| Ultimate Global Trading Ltd | Wholesale & retail | 2020 |
| Umere Limited | Other services | 2024 |
| Umuzi Healthcare Agency Ltd | Health & social care | 2022 |
| Unielectric Services Ltd | Construction | 2014 |
| Unique Barber and Beauty Ltd | Other services | 2019 |
| Unique Catering Ltd | Hospitality | 2022 |
| Unique Domiciliary Care Ltd | Health & social care | 2020 |
| United Hardware Ltd | Wholesale & retail | 2024 |
| United Kenyan Community UK | Other services | 2016 |
| United Kingdom Thowheed Jamath Limited | Other services | 2019 |
| United Playworks CIC | Health & social care | 2025 |
| Universal Commodities Exim Ltd | Hospitality | 2021 |
| Universal Cosmetics Ltd | Wholesale & retail | 2005 |
| Universal Standards (UK) Limited | Wholesale & retail | 2004 |
| Unlocked Voices Ltd | Education | 2025 |
| Untold Design CIC | Arts & recreation | 2008 |
| UP Clean Services Ltd | Administrative & support | 2021 |
| Upfrontconversation CIC | Information & communication | 2025 |
| Upland Mews Limited | Real estate | 2025 |
| Uplift SOC Limited | Professional & scientific | 2026 |
| Upscale Healthcare Services Ltd | Health & social care | 2019 |
| Urban Dealer Ltd | Wholesale & retail | 2026 |
| Urban Flame Group Ltd | Hospitality | 2026 |
| Urban Inclusion Community Limited | Professional & scientific | 2006 |
| Urban Jungle Surveyors Ltd | Construction | 2023 |
| Urban Resi (Bedford Road) Ltd | Real estate | 2025 |
| Urban Resi (BP) Ltd | Real estate | 2019 |
| Urban Resi (BP1) Ltd | Real estate | 2024 |
| Urban Resi (Fairmile Avenue) Ltd | Real estate | 2025 |
| Urban Resi (Montrell Road) Ltd | Real estate | 2025 |
| Urban Resi (Morden Road) Ltd | Real estate | 2026 |
| Urban Resi (Tower Road) Ltd | Real estate | 2026 |
| Urban Resi (WVR) Limited | Real estate | 2020 |
| Urban Resi Freeholds Ltd | Real estate | 2018 |
| Urban Resi Ltd | Real estate | 2017 |
| Urbanpoint UK Accountants Limited | Professional & scientific | 2025 |
| Urbanpoint Ukaccountants 1 Ltd | Professional & scientific | 2025 |
| Urtana Ltd | Wholesale & retail | 2016 |
| Usamabinyousaf Ltd | Wholesale & retail | 2026 |
| Utopians Day Care Limited | Health & social care | 2020 |
| Utopians Tuition Limited | Education | 2018 |
| UZ Solutions London Ltd | Professional & scientific | 2025 |
| V-Mac Construction Limited | Construction | 2008 |
| V.R. Services Ltd | Construction | 2020 |
| V4 Food and Wine Ltd | Wholesale & retail | 2018 |
| Vadenoccent Limited | Health & social care | 2025 |
| Valamana Ltd | Professional & scientific | 2022 |
| Valani Properties Limited | Real estate | 2016 |
| Valchev Contractor Ltd | Construction | 2018 |
| Valiant Care Services Limited | Administrative & support | 2024 |
| Valley Collectibles Ltd | Administrative & support | 2021 |
| Valleyrose Properties Limited | Real estate | 2024 |
| Valvaere Property Limited | Real estate | 2024 |
| Valvaere Trade Limited | Wholesale & retail | 2025 |
| Vas&Adri Ltd | Transport & logistics | 2019 |
| Vaynova Ltd | Manufacturing | 2025 |
| Vayra Ltd | Arts & recreation | 2025 |
| Vector Shipping Logistics Ltd | Wholesale & retail | 2023 |
| Vegan Flex UK Limited | Wholesale & retail | 2025 |
| Venacare Ltd | Health & social care | 2026 |
| Venthan a Health Care Limited | Health & social care | 2024 |
| Venus Super Store Limited | Wholesale & retail | 2024 |
| Verai Foods Limited | Hospitality | 2024 |
| Vextra Group Ltd | Construction | 2026 |
| Victor Irinel Popa Limited | Hospitality | 2020 |
| Victory Sports Ltd | Wholesale & retail | 2026 |
| Viet ANH Group Ltd | Professional & scientific | 2023 |
| View From My Window Limited | Administrative & support | 2016 |
| VIP International Transport Service Ltd | Transport & logistics | 2024 |
| Virk Industries Limited | Manufacturing | 2024 |
| Virsisst Ltd | Professional & scientific | 2022 |
| Vish Property Investments Ltd | Real estate | 2021 |
| Vitalpathrecruitment Ltd | Administrative & support | 2025 |
| Viver EM Londres Ltd | Information & communication | 2021 |
| Vivir Homes Ltd | Wholesale & retail | 2021 |
| Viyaas Foods Ltd | Wholesale & retail | 2026 |
| Viyana Enterprise Limited | Wholesale & retail | 2023 |