| Truebit Software Ltd | Information & communication | 2009 |
| TS Cars and Vans Ltd | Wholesale & retail | 2018 |
| Turweston Mill Limited | Real estate | 2025 |
| Tusmore Plumbing & Heating Limited | Construction | 2011 |
| TWC59 Limited | Professional & scientific | 2020 |
| Twenty 15 Limited | Transport & logistics | 2024 |
| Twist of Lemon Limited | Wholesale & retail | 2010 |
| Twisted Concepts Limited | Wholesale & retail | 2007 |
| Typhoon Trading Limited | Administrative & support | 1991 |
| U-Band Limited | Manufacturing | 2020 |
| Uber SOL Limited | Information & communication | 2013 |
| UK House Hub Limited | Real estate | 2019 |
| UK Nails Brackley Ltd | Other services | 2023 |
| Uksa Investment Limited | Financial services | 2020 |
| UMR 20 Limited | Wholesale & retail | 2017 |
| Underground Water Services Limited | Construction | 2026 |
| Unified Against Violence CIC | Administrative & support | 2025 |
| Unistruct Ltd | Construction | 2017 |
| United Kingdom Telecommunications Academy | Other services | 1995 |
| Universal Software Solutions Limited | Information & communication | 1994 |
| Upton Court Limited | Households | 1987 |
| V J Cars Brackley Limited | Transport & logistics | 2022 |
| Vale & Valley Homes Ltd | Construction | 2026 |
| Valen Group International Ltd | Professional & scientific | 2025 |
| Vauss Limited | Professional & scientific | 2016 |
| VDP Management Limited | Wholesale & retail | 2020 |
| Vegapalm Paints Limited | Wholesale & retail | 2023 |
| Venom Developments Ltd | Wholesale & retail | 2025 |
| Ventrad Ltd | Manufacturing | 2019 |
| Ventura Design Limited | Information & communication | 2014 |
| Verticoat Services Ltd | Construction | 2023 |
| Vexler Consulting Limited | Professional & scientific | 2022 |
| Victoria Hicks Limited | Administrative & support | 2010 |
| Vidarr Automotive Ltd | Wholesale & retail | 2015 |
| Vidarr International Ltd | Wholesale & retail | 2025 |
| Vidarr Local Ltd | Wholesale & retail | 2025 |
| VIK Robinson Limited | Information & communication | 2024 |
| Village Fisher Ltd | Hospitality | 2024 |
| Viner Farrer Limited | Extraterritorial | 1993 |
| Vintage Austin Register Limited(The) | Wholesale & retail | 1981 |
| Vinum Copia Ltd | Construction | 2021 |
| Virtual Kitchens Limited | Construction | 2018 |
| VLB Finance Solutions Limited | Financial services | 2024 |
| Volttek Limited | Professional & scientific | 2007 |
| Vpstar Ltd | Professional & scientific | 2019 |
| VR Recruit Ltd | Administrative & support | 2019 |
| VSA Retail Ltd | Wholesale & retail | 2017 |
| W Richardson Building Limited | Construction | 2024 |
| Walbrook Corporate Finance Limited | Financial services | 2022 |
| Wallis Watson Limited | Real estate | 2012 |
| Wappenham Livestock Collections Ltd | Administrative & support | 2009 |
| Ward & Co Ltd | Professional & scientific | 2007 |
| Wardbox Limited | Information & communication | 2025 |
| Warman Worldwide Ltd | Households | 2021 |
| Warreners Ltd | Arts & recreation | 2020 |
| Washington House Occupational Health Limited | Health & social care | 2011 |
| Watson Engineering Limited | Manufacturing | 2022 |
| Watt Ceramics Limited | Construction | 1999 |
| Waumsley Property Developments Limited | Real estate | 2023 |
| Wayne Cuss Limited | Construction | 2015 |
| Waynflete Infants' School | Education | 2012 |
| WE ARE Collider Limited | Professional & scientific | 2017 |
| Well Llew Limited | Arts & recreation | 2025 |
| Wellington Airfield Limited | Real estate | 2019 |
| Wellsware Ltd | Information & communication | 2023 |
| Welly Boots & Heels PUB Co. Ltd | Hospitality | 2017 |
| Wemew Ltd | Wholesale & retail | 2025 |
| Wendlebury Developments Limited | Construction | 2019 |
| Wenmouth International Limited | Information & communication | 1989 |
| Westbury Mill Flats Management Company Limited | Households | 2003 |
| Westminster 28 Ltd | Households | 2023 |
| Westside Windows Cleaning Services Limited | Administrative & support | 2025 |
| WF Inventory & Property Services Ltd | Other services | 2021 |
| Wheel Deal Tyres Limited | Wholesale & retail | 2019 |
| Wheels Autotech Ltd | Wholesale & retail | 2025 |
| Where Hope Grows CIC | Hospitality | 2026 |
| White Clean Oxford Limited | Administrative & support | 2014 |
| White Hot Property Limited | Real estate | 2013 |
| White Hot Property Management Limited | Households | 2015 |
| White Water Developments Limited | Real estate | 2022 |
| Whites Wardrobes Limited | Wholesale & retail | 2025 |
| Whitfield Solutions Limited | Extraterritorial | 2024 |
| Wild and Free Limited | Wholesale & retail | 2003 |
| Wilderness and Wild Ltd | Administrative & support | 2023 |
| Wildmere Limited | Real estate | 2025 |
| Wildmere Property Group Limited | Real estate | 2025 |
| Wildmere Property Limited | Real estate | 2025 |
| Wilkins Landscapes Limited | Administrative & support | 2016 |
| Wilkinson Aviation Maintenance Ltd. | Manufacturing | 2012 |
| Will's Talent Ltd | Administrative & support | 2022 |
| William Green Design Limited | Manufacturing | 2024 |
| Wilson Developments Limited | Real estate | 2020 |
| Window Butchers Limited | Wholesale & retail | 1996 |
| Wing Farm Limited | Real estate | 2024 |
| With Scale Limited | Professional & scientific | 2024 |
| Wizard Prang Enterprises Ltd | Transport & logistics | 2012 |
| Wonderland Agency Limited | Arts & recreation | 2008 |
| Woodfinishes (Holdings) Limited | Financial services | 2020 |
| Woodfinishes Limited | Wholesale & retail | 2001 |
| Woodflower Limited | Professional & scientific | 2003 |