| Weaver Engineering Services Limited | Other services | 1996 |
| WEB3 Solutions Ltd | Information & communication | 2022 |
| Webbs Refrigeration Limited | Other services | 2016 |
| Webb’S Roofing Solutions Ltd | Construction | 2025 |
| Webgentic Ltd | Information & communication | 2026 |
| Wecoeco Ltd | Professional & scientific | 2025 |
| Wedding Vision Ltd | Professional & scientific | 2026 |
| Wedgewood Court Management Limited | Households | 1978 |
| Weekendden Ltd | Real estate | 2023 |
| Weight Loss Surgery UK Limited | Health & social care | 2019 |
| Welcome to Jamwrap Ltd | Hospitality | 2019 |
| Welevate LDT Ltd | Wholesale & retail | 2024 |
| Welldad Limited | Health & social care | 2024 |
| Weller Mews Management Company Limited | Households | 2006 |
| Wellers Accounting Limited | Extraterritorial | 2009 |
| Wellers Business Services Limited | Extraterritorial | 2010 |
| Wellers Commercial Limited | Extraterritorial | 2008 |
| Wellers Corporate Limited | Extraterritorial | 2008 |
| Wellers Cresswell Group Limited | Extraterritorial | 2015 |
| Wellers Finance Limited | Extraterritorial | 2009 |
| Wellers Law Group LLP | | 2009 |
| Wellers Law Limited | Extraterritorial | 2024 |
| Wellers Management Limited | Extraterritorial | 2009 |
| Wellers Staff Limited | Administrative & support | 2007 |
| Wellestates Limited | Real estate | 2001 |
| Wellfinity Studios Ltd | Professional & scientific | 2024 |
| Wellington House Management (Beckenham) Limited | Households | 2001 |
| Wellledhealthcare Ltd | Health & social care | 2023 |
| Wellness Consulting Limited | Health & social care | 2020 |
| Wellness Horizons Limited | Public administration | 2024 |
| Wellnest Ltd | Information & communication | 2023 |
| Wells Academy Limited | Education | 2018 |
| Wells Fireworks (Dartford) Limited | Manufacturing | 1984 |
| Wells Fireworks Limited | Extraterritorial | 2015 |
| Wells House RTM Company Limited | Households | 2024 |
| Wells Way & ST Georges Way (London) RTM Company Limited | Real estate | 2025 |
| Wellwand Limited | Professional & scientific | 2016 |
| Wembley Drum Centre Limited | Financial services | 2014 |
| Wendover Lawn Tennis Club Limited | Arts & recreation | 1927 |
| Wendover Lodge Freehold Limited | Households | 2010 |
| Wendover Lodge Management Company Limited | Households | 2009 |
| Went House Management Limited | Households | 1997 |
| Wentworth Trading LLP | | 2006 |
| Wernham Hogg Limited | Construction | 2019 |
| West Care Experts Limited | Health & social care | 2013 |
| West Hill Freeholding Limited | Real estate | 2024 |
| West Kent Golf Club Limited | Professional & scientific | 1945 |
| West Training Limited | Arts & recreation | 2021 |
| West Wickham Alterations Limited | Manufacturing | 2018 |
| West Wickham Electrical Ltd | Construction | 2023 |
| Westbrook Consulting Ltd. | Information & communication | 2012 |
| Westbury Court (Bickley) Management Ltd | Households | 2020 |
| Westbury Music Consultants Limited | Arts & recreation | 1987 |
| Westerham Heights Management Company Limited | Households | 2023 |
| Westerham Lodge Residents Company Limited | Real estate | 1994 |
| Westgate Cleaning Services Ltd | Administrative & support | 2002 |
| Westmoreland Lodge RTM Company Limited | Households | 2009 |
| Westoak Carpentry & Construction Limited | Construction | 2023 |
| Westow Podiatry Clinic Limited | Health & social care | 2022 |
| Westway Property LLP | | 2013 |
| WET Appetites Ltd | Hospitality | 2018 |
| Wetals Ltd | Information & communication | 2017 |
| Wetlands Services Limited | Administrative & support | 2023 |
| Wetlands Waterproofing Ltd | Administrative & support | 2009 |
| Wewantwealth Limited | Health & social care | 2024 |
| Wexora Limited | Professional & scientific | 2025 |
| WF Heating & Plumbing Ltd | Construction | 2021 |
| WGS East Limited | Manufacturing | 2006 |
| WGW Properties Limited | Households | 2016 |
| What IF Agency Ltd | Professional & scientific | 2023 |
| What the Fogg Ltd | Wholesale & retail | 2024 |
| What's New Pussycat Limited | Wholesale & retail | 2014 |
| What's Next UK Ltd | Professional & scientific | 2008 |
| Whatay Ltd | Professional & scientific | 2023 |
| Whateley Limited | Real estate | 2021 |
| Where the Leaves Fall Limited | Administrative & support | 2019 |
| Whispersfx Solutions Limited | Administrative & support | 2014 |
| Whistler Bridge Holdings Limited | Real estate | 2021 |
| White FIR Ltd | Real estate | 2022 |
| White Glove Health Care Services Ltd | Administrative & support | 2015 |
| White Horse Removals Ltd | Transport & logistics | 2019 |
| White Isle Clothing Limited | Wholesale & retail | 2024 |
| White Noise International Limited | Wholesale & retail | 2020 |
| White Rabbit INK Limited | Health & social care | 2019 |
| White Rabbit Properties Ltd | Real estate | 2023 |
| White Residential Limited | Real estate | 2023 |
| White Roze Limited | Hospitality | 2023 |
| White Square Solutions Ltd | Wholesale & retail | 2025 |
| White Thrones & Chariots Limited | Construction | 2025 |
| White Wing Yachting Ltd | Extraterritorial | 2024 |
| Whiteleys Office Supplies Limited | Wholesale & retail | 1989 |
| Whiteops Consulting Limited | Other services | 2015 |
| Whiter Financial Limited | Financial services | 2004 |
| Whiter Wealth Management Limited | Financial services | 2012 |
| Whitstable High Street Limited | Construction | 2019 |
| Whole of Life Ltd | Professional & scientific | 2025 |
| Wholekye International Co., Ltd | Extraterritorial | 2014 |
| Wholesale Appliances Limited | Wholesale & retail | 2018 |
| Wholesale Clothing Ltd | Wholesale & retail | 2021 |
| Wholesalegenics Ltd | Wholesale & retail | 2022 |