| Top Travel Cars Ltd | Transport & logistics | 2023 |
| Total Pest Control (U.K.) Limited | Other services | 1992 |
| Total Pest Control Holdings Limited | Financial services | 2024 |
| Town and Country Fencing Ltd | Construction | 2017 |
| TR Car Club Limited | Other services | 1995 |
| TR Owners Club Limited | Other services | 1980 |
| Trail Campers Ltd | Administrative & support | 2019 |
| Training in Good Hands Ltd | Health & social care | 2010 |
| Transolution Language Services Limited | Professional & scientific | 2013 |
| Trispray Coatings Limited | Construction | 2025 |
| Tristwell Solutions Ltd | Arts & recreation | 2013 |
| Triumph TR Car Club Limited | Other services | 1995 |
| Triumph Vapes Limited | Wholesale & retail | 2017 |
| Tropical Best Sunbeds Ltd | Wholesale & retail | 2014 |
| True Mobility Limited | Wholesale & retail | 2003 |
| Trufitt Bespoke Interiors Ltd | Construction | 2019 |
| Trust Payroll Ltd | Professional & scientific | 2019 |
| Tsnet Systems Limited | Information & communication | 2008 |
| TT Motorgroup Ltd | Wholesale & retail | 2021 |
| Tttim Limited | Information & communication | 2023 |
| Tudor Oak Buildings Ltd | Construction | 2016 |
| Tudor Walk Management Limited | Households | 2015 |
| TVH Industrial Products Limited | Wholesale & retail | 2021 |
| TVT Antiques & Collectables Ltd | Wholesale & retail | 2013 |
| TWC Design Limited | Wholesale & retail | 2015 |
| Twenty Two Innovations Holdings Ltd | Administrative & support | 2025 |
| Twoten Broadway Apartments Ltd | Real estate | 2022 |
| Twoten Broadway Ltd | Real estate | 2022 |
| Twoten Commercial Ltd | Real estate | 2022 |
| TYE Contracts Limited | Transport & logistics | 2011 |
| UK Cartridges Limited | Wholesale & retail | 2008 |
| UK Dog Fields Ltd | Other services | 2024 |
| UK LAB Systems Limited | Real estate | 2025 |
| UK Smart Vending Ltd | Wholesale & retail | 2025 |
| UK Vacuum and Control Systems Ltd | Professional & scientific | 2025 |
| UK Young Minds AI Club Ltd | Education | 2025 |
| Uk-R Motors Limited | Wholesale & retail | 2025 |
| Umbrella Agencies Limited | Wholesale & retail | 2005 |
| Umbrella Capital Ltd | Financial services | 2024 |
| Umbrella Space Science Ltd | Professional & scientific | 2023 |
| Unicorn Black Studios Ltd | Information & communication | 2024 |
| Unicorn Grand National Ltd. | Professional & scientific | 2023 |
| Unicred Limited | Information & communication | 2025 |
| Uniqo International Limited | Real estate | 2002 |
| United Electrical (U.K.) Ltd | Construction | 2017 |
| Universal Window Repairs Limited | Manufacturing | 2005 |
| Unruly Labs Ltd | Professional & scientific | 2016 |
| Upton Resilience Limited | Professional & scientific | 2023 |
| Urbanzsolutions Ltd | Wholesale & retail | 2024 |
| V. DE Brum Ltd | Professional & scientific | 2025 |
| V2R Homes Limited | Real estate | 2022 |
| V2R Infosys Ltd. | Information & communication | 2017 |
| Vaisla Ltd | Transport & logistics | 2012 |
| Valchanov Limited | Hospitality | 2015 |
| Vale Fencing & Gates Ltd | Administrative & support | 2026 |
| Vali Taxis Ltd | Transport & logistics | 2026 |
| Value Hub Limited | Professional & scientific | 2014 |
| Van Esch Advisory Ltd | Professional & scientific | 2026 |
| Vantis Motor Group Ltd | Wholesale & retail | 2026 |
| Varsani Ventures Ltd | Real estate | 2022 |
| Vasu Ltd | Real estate | 2024 |
| VCB Homes Limited | Real estate | 2002 |
| VD Traders Ltd | Arts & recreation | 2022 |
| Veeranji Homes Ltd | Real estate | 2024 |
| Vehicle Accessories Investment Limited | Real estate | 2025 |
| Veilo Ltd | Information & communication | 2026 |
| Velko Construction Ltd | Manufacturing | 2022 |
| Venture Business Management Limited | Administrative & support | 2012 |
| Venture Rentals Ltd | Wholesale & retail | 2021 |
| Verde Rosso Ltd | Construction | 2023 |
| Verity Interiors Ltd. | Construction | 2019 |
| Versus Hair Team Ltd. | Other services | 2010 |
| Vertex Brickwork Ltd | Construction | 2018 |
| Vertex Professionals Limited | Information & communication | 2019 |
| Vexford Investments Ltd | Real estate | 2024 |
| Veys Ltd | Construction | 2024 |
| VIA DEL Dolce Limited | Wholesale & retail | 2025 |
| Vibrant Lifeforce Limited | Health & social care | 2016 |
| Victoria LEE Aesthetics Ltd | Other services | 2024 |
| Vine Beverages Ltd | Wholesale & retail | 2022 |
| Vine Care & Support Ltd | Professional & scientific | 2022 |
| Vine Community Services Ltd | Transport & logistics | 2019 |
| Vine Healthcare Professionals Ltd | Administrative & support | 2026 |
| Vine Recruitment Solutions Ltd | Administrative & support | 2017 |
| Vintage Kitchen and Bedrooms Limited | Manufacturing | 2021 |
| VIO Infotech Limited | Information & communication | 2016 |
| Viridian Equity Limited | Financial services | 2025 |
| Vishal Assets Ltd | Real estate | 2026 |
| Vishvid Limited | Professional & scientific | 2026 |
| Visionary Business Solutions Ltd | Professional & scientific | 2013 |
| Vitra (U.K.) Limited | Wholesale & retail | 1992 |
| Vmic Limited | Professional & scientific | 2025 |
| VMM Fire Ltd | Construction | 2024 |
| Voidstar Games Ltd | Arts & recreation | 2026 |
| Volonte Group Limited | Real estate | 2021 |
| Vortex Drone Company Ltd | Professional & scientific | 2018 |
| Voxstrum Ltd | Information & communication | 2026 |
| VPM Services Ltd | Professional & scientific | 2015 |
| VSH Enterprises Ltd | Professional & scientific | 2007 |
| Vulpix Detailing Ltd | Wholesale & retail | 2021 |