| Vnj.Polius Ltd | Construction | 2018 |
| Void to LET London Ltd | Construction | 2026 |
| Voltage Electrical Limited | Energy | 2011 |
| Vonlevers Limited | Manufacturing | 2018 |
| Vort Ltd | Manufacturing | 2016 |
| VPK Services Ltd | Wholesale & retail | 2017 |
| VRM News Agent Ltd | Wholesale & retail | 2020 |
| VS 9 Exporters Ltd | Wholesale & retail | 2020 |
| Vsct Company Formations Ltd | Professional & scientific | 2023 |
| Vsct Tax Consultancy Limited | Administrative & support | 2015 |
| Vyas Tech Limited | Information & communication | 2017 |
| VYN Digital Ltd | Financial services | 2026 |
| W 24X7 Maintenance Ltd | Construction | 2026 |
| W FOX Property Development Ltd | Hospitality | 2007 |
| W L Air Conditioning Limited | Construction | 2015 |
| W Lounge 2023 Ltd | Wholesale & retail | 2024 |
| W Silva Ltd | Other services | 2017 |
| W1 Investments (London) Limited | Real estate | 2018 |
| Wacky Jerseys Ltd | Wholesale & retail | 2021 |
| Waddon Cafe Limited | Hospitality | 2006 |
| Wahaj Outlet Ltd | Wholesale & retail | 2026 |
| Wara Sweets Limited | Wholesale & retail | 2016 |
| Ward Project Services Ltd | Construction | 2015 |
| Warham Road Residential Association Limited | Households | 1993 |
| Warka UK Limited | Wholesale & retail | 2021 |
| Wasabi Productions Ltd | Information & communication | 2025 |
| Waste OIL Recycling Ltd | Water & waste | 2013 |
| Watkins Thermal Solutions Ltd | Construction | 2014 |
| Wavebrae Limited | Administrative & support | 1971 |
| Wayfinder AI Ltd | Professional & scientific | 2026 |
| Wayn Star Limited | Hospitality | 2024 |
| Wayne Hayes Limited | Extraterritorial | 2025 |
| WBS Trustees Ltd | Professional & scientific | 2012 |
| WDK Limited | Real estate | 2025 |
| WE Build Anything Limited | Construction | 2023 |
| WE Make Footballers Carshalton and Coulsdon Area LLP | | 2019 |
| Wealth With Western Ltd | Professional & scientific | 2025 |
| Webake London Ltd | Hospitality | 2021 |
| Welbodi Partnership | Health & social care | 2008 |
| Welcome Path Properties Ltd | Real estate | 2024 |
| Wellness 53 Ltd | Health & social care | 2024 |
| Wellness Medics Ltd | Health & social care | 2024 |
| Wellness-Essary Ltd | Information & communication | 2025 |
| Weronwoo Limited | Wholesale & retail | 2025 |
| Weroz Grill Ltd | Hospitality | 2025 |
| West Dene (Cheam) Residents Company | Real estate | 1974 |
| West END Kebab & Pizza Limited | Hospitality | 2021 |
| Westade Solutions Ltd | Professional & scientific | 2025 |
| Westbrook Coaching Limited | Administrative & support | 2021 |
| Western OWL Enterprises Ltd | Wholesale & retail | 2022 |
| WFC Consultancy Ltd | Professional & scientific | 2015 |
| Wheeliefinealloys Smart Repairs Ltd | Wholesale & retail | 2017 |
| Wheelio Vehicle Hire Ltd | Transport & logistics | 2026 |
| Wheelwrights Croydon Ltd | Administrative & support | 2011 |
| Whisk the Wonders Ltd | Hospitality | 2025 |
| White Box Limited | Information & communication | 1978 |
| White House Gardens Management Company Limited (the) | Households | 1973 |
| White Lodge (London) Limited | Real estate | 2020 |
| White Lodge Management (South Croydon) Company Limited | Households | 2013 |
| White Nest Limited | Professional & scientific | 2020 |
| Whitehorse Construction (UK) Ltd | Real estate | 2013 |
| Whitewave Limited | Other services | 2002 |
| Whitgiftian Association Trust | Other services | 2012 |
| Whizzconsult London Ltd | Information & communication | 2021 |
| Whizzdrop Ltd | Transport & logistics | 2023 |
| Wicked Spark Solutions Ltd Ltd | Construction | 2019 |
| Widdicks Electrical Services Ltd | Construction | 2014 |
| Wieslaw Burnos Associates Limited | Construction | 2025 |
| Wigsbytee Ltd | Other services | 2020 |
| Wild About Honey Limited | Wholesale & retail | 2014 |
| Wildcow Events Group Ltd | Hospitality | 2025 |
| Wildern Ltd | Professional & scientific | 2025 |
| Will Heat Services Limited | Construction | 2018 |
| Will-Lettings Ltd | Real estate | 2024 |
| Willcocks Ground Maintenance Limited | Administrative & support | 2012 |
| Williams Autos Ltd | Wholesale & retail | 2008 |
| Willow and Sage Homeware Ltd | Wholesale & retail | 2025 |
| Wilson Green Consultancy Ltd | Professional & scientific | 2017 |
| Windrush Housing Development Partnership Limited | Other services | 2019 |
| Winrax Trade Ltd | Wholesale & retail | 2025 |
| Winters Real Estate Developments (Lingfield) Ltd | Real estate | 2026 |
| Winters Real Estate Securities Limited | Real estate | 2023 |
| Wire-Free Ltd | Construction | 2017 |
| WJS Plumbing and Heating Ltd | Energy | 2015 |
| Wolf Construction & Development Ltd | Construction | 2020 |
| Wood Floor Experts Ltd | Construction | 2012 |
| Woods Landscaping Limited | Administrative & support | 2020 |
| Woodvale Court Management Company Limited | Households | 1994 |
| Woofers CR2 Ltd | Agriculture & fishing | 2025 |
| World Domination Music Limited | Information & communication | 2004 |
| Worldclass Products Limited | Professional & scientific | 1997 |
| Worthing Poppins Limited | Hospitality | 2018 |
| WTR Holdings Ltd | Real estate | 2024 |
| WXX Kebab Limited | Real estate | 2007 |
| Wychwood 2014 Limited | Other services | 2014 |
| WYN WIN Services Ltd | Administrative & support | 2025 |
| Xcentric Limited | Wholesale & retail | 2023 |
| Xflutter Limited | Wholesale & retail | 2025 |
| XI Luxury Estate Ltd | Real estate | 2025 |
| XIX Drainage Ltd | Construction | 2024 |