| Twenty-One Twelve Consulting Limited | Professional & scientific | 2024 |
| Twilight Care Services Ltd | Extraterritorial | 2015 |
| Twisting Tales Ltd | Arts & recreation | 2025 |
| Two Chefs Premier Indian Takeaway Ltd | Hospitality | 2026 |
| Two TON Distillery Ltd | Manufacturing | 2021 |
| Twofold Spirits Limited | Manufacturing | 2024 |
| TWS Direct Limited | Wholesale & retail | 1989 |
| Tytrilion Ltd | Manufacturing | 2021 |
| UAV Engines Limited | Manufacturing | 1992 |
| Uber Creation Limited | Professional & scientific | 2006 |
| Ubhi Construction Ltd | Construction | 2008 |
| UK Architectural Antiques Limited | Wholesale & retail | 2004 |
| UK Beverage Services Ltd | Professional & scientific | 2013 |
| UK Engineering Maintenance Limited | Wholesale & retail | 2002 |
| UK GME Properties Ltd | Real estate | 2024 |
| UK Hydrogen Fuels Limited | Wholesale & retail | 2023 |
| UK ICF | Other services | 2008 |
| UK Inhaler Group Community Interest Company | Education | 2022 |
| UK Room Rents Ltd | Real estate | 2015 |
| UK Websites Ltd | Information & communication | 2015 |
| UKE Multidrop Limited | Transport & logistics | 2017 |
| Ukrainian Sunflower Ltd | Hospitality | 2023 |
| Ultra Power Solutions Ltd | Construction | 2024 |
| Ultracom Limited | Information & communication | 2012 |
| Unai Ltd | Administrative & support | 2010 |
| Underdale Property Management Ltd | Real estate | 2023 |
| Unus Limited | Real estate | 2007 |
| UP Engineering Ltd | Professional & scientific | 2020 |
| UP London Five Limited | Hospitality | 2026 |
| UP London Four Limited | Hospitality | 2025 |
| UP London One Limited | Hospitality | 2025 |
| UP London Three Limited | Hospitality | 2025 |
| UP London Two Limited | Hospitality | 2025 |
| Upcycle Studio Ltd | Wholesale & retail | 2024 |
| Uplyft Digital Limited | Information & communication | 2025 |
| Upstone Limited | Real estate | 2015 |
| Urban Blue Development Ltd | Administrative & support | 2020 |
| Urban Blue Property Ltd | Real estate | 2015 |
| Urban Green Roof Care Limited | Extraterritorial | 2015 |
| Urban Tandoor Limited | Hospitality | 2025 |
| Urbanblend Limited | Hospitality | 2008 |
| Urbanhaven Homes Ltd | Real estate | 2026 |
| Urinis Ltd | Transport & logistics | 2019 |
| Useroption Limited | Real estate | 1999 |
| Utility Network Solutions Limited | Construction | 2013 |
| Ux/Ui Design Ltd | Professional & scientific | 2011 |
| V R Storage Ltd | Transport & logistics | 2025 |
| Vada Services Limited | Health & social care | 2021 |
| Vagari Limited | Real estate | 2019 |
| Vals Cafe LP | | 2018 |
| Vame Group Ltd | Extraterritorial | 2025 |
| Van LAB Custom Conversions Ltd | Wholesale & retail | 2019 |
| Vanbrugh Meadows (Long Hanborough) Management Company Limited | Households | 2017 |
| Vartid Holdings Ltd | Wholesale & retail | 2021 |
| Vehicle Accessories Solutions Holdings Limited | Financial services | 2024 |
| Vehicle Accessories Solutions Limited | Wholesale & retail | 2010 |
| Vehuer Ltd | Transport & logistics | 2021 |
| Veloffee Limited | Information & communication | 2018 |
| Velospoke Limited | Extraterritorial | 2015 |
| Vend a Charge Ltd | Wholesale & retail | 2019 |
| Vengold Ltd | Health & social care | 2024 |
| Vericomp Consulting Ltd | Professional & scientific | 2025 |
| Veronese Ltd | Financial services | 2011 |
| Versatile Farming Limited | Agriculture & fishing | 2012 |
| Vertex Holdings Corporation Ltd | Financial services | 2024 |
| Vesey Accounting Services Ltd | Professional & scientific | 2017 |
| Vesper Consultancy Services Ltd | Public administration | 2022 |
| Veteran Housing Group CIC | Other services | 2024 |
| Vhimbrent Ltd | Administrative & support | 2021 |
| Vibe Recruitment Limited | Administrative & support | 2023 |
| Victoria Lowe Enterprises Ltd | Hospitality | 2021 |
| Victoria Properties (Birmingham) Limited | Construction | 2005 |
| Vida Water UK Limited | Administrative & support | 2026 |
| Vienna Investco Limited | Financial services | 2021 |
| Vienna Midco 1 Limited | Financial services | 2022 |
| Vienna Midco 2 Limited | Financial services | 2022 |
| Viking Vehicle Finance(Uk) Ltd | Wholesale & retail | 2024 |
| Vincent Court Developments Limited | Real estate | 2016 |
| Virelli Ltd | Transport & logistics | 2022 |
| Visage Surgical Aesthetics Limited | Administrative & support | 2013 |
| Vista Planning Ltd | Professional & scientific | 2023 |
| Visual Precision Limited | Information & communication | 1995 |
| Vita Brand Ltd | Real estate | 2002 |
| Vitax Solutions Limited | Information & communication | 2015 |
| Vivis Luxe Laser Limited | Other services | 2022 |
| Vizcaya Holdings Limited | Financial services | 2003 |
| VJF Limited | Professional & scientific | 2012 |
| Vlurhei Ltd | Administrative & support | 2021 |
| Vmtp Midlands Holdings Limited | Financial services | 2025 |
| Vmtp Midlands Limited | Wholesale & retail | 2004 |
| Voidenergy Ltd | Transport & logistics | 2019 |
| Volt Energy Supply Limited | Wholesale & retail | 1933 |
| Volt Energy Systems Ltd | Manufacturing | 2026 |
| Voyage 1 Limited | Health & social care | 1988 |
| Voyage 2 Unlimited | Other services | 1992 |
| Voyage Bidco Limited | Professional & scientific | 2006 |
| Voyage Care Bidco Limited | Financial services | 2014 |
| Voyage Care Bondco PLC | Financial services | 2013 |
| Voyage Care Holdco Limited | Financial services | 2014 |
| Voyage Care Limited | Professional & scientific | 2001 |