| Visual Electronic Services UK Limited | Administrative & support | 2001 |
| Vivo UK Ltd | Information & communication | 2008 |
| VK Pharma Ltd | Wholesale & retail | 2023 |
| Volanu Ltd | Transport & logistics | 2023 |
| Voltige Limited | Education | 2021 |
| Vskm Legal Ltd | Professional & scientific | 2024 |
| VULCAN607 Ltd | Professional & scientific | 2013 |
| Vyrnwy Consultants Limited | Professional & scientific | 2012 |
| W.Chapman & Sons Limited | Real estate | 1942 |
| W.H. Mewes and SON Limited | Wholesale & retail | 1965 |
| W.White Roofing Ltd | Construction | 2009 |
| W1DA Limited | Manufacturing | 2014 |
| WA Creative Limited | Financial services | 1992 |
| Wa-Global (Management) Limited | Real estate | 2007 |
| Wa-Global Canarias Ltd | Real estate | 2026 |
| Waddell Communications Limited | Professional & scientific | 2011 |
| Wafa Assets Limited | Real estate | 1978 |
| WAI Shan Enterprise Limited | Real estate | 2006 |
| Walder Events Ltd | Arts & recreation | 2017 |
| Wallace Heating Ltd | Construction | 2011 |
| Wallstone Properties Limited | Real estate | 2022 |
| Walrus Products Limited | Wholesale & retail | 2019 |
| Warbricks Ltd | Wholesale & retail | 2025 |
| Wardour Financial Planners Ltd | Financial services | 2016 |
| Waterfront One Ltd | Construction | 2024 |
| Waterfront Two Ltd | Construction | 2024 |
| Wave Creators Limited | Hospitality | 2022 |
| Wavelength Healthcare Consulting Ltd | Professional & scientific | 2016 |
| Wayland Food Solutions Limited | Hospitality | 2008 |
| Waypoint Psychology Ltd | Health & social care | 2025 |
| Wayside Autos Ltd | Wholesale & retail | 2016 |
| Wcgp Limited | Other services | 2023 |
| WE ARE Audio Ltd | Information & communication | 2011 |
| WE Held on 3 Ltd | Financial services | 2025 |
| WE Held on Two Limited | Financial services | 2025 |
| Webb Creative Limited | Information & communication | 2022 |
| Webstackx Ltd | Information & communication | 2025 |
| Weeksy Consultancy Ltd | Administrative & support | 2024 |
| Weller Management Limited | Professional & scientific | 2009 |
| Wellfield Workshops Limited | Real estate | 2021 |
| Wendover Plastering Ltd | Other services | 2011 |
| West Common Close Management Limited | Real estate | 1972 |
| West HAM Arches LLP | | 2007 |
| West London Plumbing & Heating Limited | Other services | 2016 |
| West London's Astrology Centre Limited | Education | 1998 |
| West TEN Construction Ltd. | Other services | 2006 |
| West Tenth Limited | Administrative & support | 2020 |
| West Way Investments Limited | Real estate | 2024 |
| WESTCO29 Facilities Management Company Limited | Administrative & support | 2023 |
| Westcott & Westcott Ltd | Professional & scientific | 2011 |
| Westgarth Consulting Limited | Other services | 2017 |
| Westward Ferries Limited | Transport & logistics | 1983 |
| Weybridge Financial Services Limited | Extraterritorial | 1999 |
| Whanau Property Management Company Ltd | Real estate | 2023 |
| Wheeler & Co CA Limited | Professional & scientific | 2008 |
| Wheresmystop Ltd | Information & communication | 2012 |
| White Gate Associates GX Ltd | Professional & scientific | 2023 |
| White Scenery Limited | Construction | 2015 |
| Whitlock Hall Limited | Hospitality | 2018 |
| Whizneuro Limited | Wholesale & retail | 2025 |
| WHY Don'T YOU Ltd | Arts & recreation | 2017 |
| Whyaye Property Ltd | Real estate | 2017 |
| Wickland Sims Limited | Information & communication | 2011 |
| Wild City Communications Ltd | Professional & scientific | 2023 |
| Wild Origin Ltd | Wholesale & retail | 2020 |
| Willand Chalfont Limited | Real estate | 2025 |
| William John Cathcart Ltd | Extraterritorial | 2024 |
| William Rentals Limited | Real estate | 2025 |
| Williams (Gold Hill) Limited | Hospitality | 2020 |
| Williams and King Ltd | Other services | 2012 |
| Willis Bourke Limited | Construction | 2019 |
| Willow Carpets Ltd | Wholesale & retail | 2020 |
| Willow House Capital Holdings Ltd | Financial services | 2025 |
| Willow House Capital Ltd | Professional & scientific | 2025 |
| Willows Hairdressing Limited | Other services | 2013 |
| Wilter Associates LLP | | 2020 |
| WIN at Exams Limited | Education | 2026 |
| Wincot Ltd | Professional & scientific | 2025 |
| Winders Road Limited | Real estate | 2018 |
| Windsar Care (UK) LLP | | 2012 |
| Windsar Care Homes (UK) Limited | Health & social care | 2017 |
| Windsar Care Qecc Ltd | Health & social care | 2020 |
| Wingfield Works UK Limited | Administrative & support | 2013 |
| Wingrove Partnerships Limited | Construction | 2008 |
| Winslet's of London Limited | Wholesale & retail | 2018 |
| Winslets Studios Limited | Real estate | 2020 |
| Wipeout Europe Ltd | Wholesale & retail | 2011 |
| Wise Media Ltd | Other services | 2008 |
| Wise Mind Ltd | Health & social care | 2025 |
| Wisemen Properties Ltd | Real estate | 2012 |
| Wisteria Homes Limited | Construction | 2017 |
| Wittering Projects Limited | Construction | 2020 |
| Wolf AV Limited | Other services | 2018 |
| Women's Health Care Limited | Health & social care | 2009 |
| Woodchester Park Ltd | Real estate | 2016 |
| Woodeaton Management Limited | Professional & scientific | 2002 |
| Woodlands Medical Services Ltd | Health & social care | 2010 |
| Woodle Limited | Administrative & support | 2013 |
| Work Networks Limited | Professional & scientific | 2016 |
| Working With Joy Limited | Education | 2001 |