| W&S Investments Limited | Real estate | 2016 |
| W. Dorling & Sons Limited | Real estate | 1955 |
| W. Songhurst Limited | Construction | 1982 |
| W.E.Charlesworth & SON Limited | Wholesale & retail | 1962 |
| W.I.T. Capital Limited | Real estate | 2000 |
| W.I.T. Enterprises Limited | Real estate | 2015 |
| W2F Ltd | Manufacturing | 2024 |
| W2O Consulting and Training Ltd | Professional & scientific | 2024 |
| Waddy Enterprises Ltd | Real estate | 2015 |
| Waffle Education Ltd | Information & communication | 2024 |
| Waifu Ventures Ltd | Professional & scientific | 2024 |
| Wake Guard Ltd | Administrative & support | 2025 |
| Walkthorn Limited | Households | 1979 |
| Wall M & E Consulting Limited | Professional & scientific | 2009 |
| Wallace Instruments Limited | Manufacturing | 2016 |
| Wallistech Limited | Administrative & support | 2012 |
| Walnut Grove (Crawley Down Road) Management Company Limited | Construction | 2017 |
| Walter George Ltd | Information & communication | 2019 |
| Walton Court Owners Limited | Households | 2024 |
| Walton Heath Developments Limited | Construction | 1980 |
| Wandlight Marketing Ltd | Professional & scientific | 2024 |
| Wandsworth Construction Ltd | Construction | 2021 |
| Warburg Associates Limited | Professional & scientific | 2007 |
| Ward Management Consulting Ltd | Professional & scientific | 2004 |
| Warehouse Demo Services Limited | Professional & scientific | 1993 |
| Warren Court (Ashtead) Management Company Limited | Households | 2007 |
| Warren Road (Reigate) Management Company Ltd | Households | 2011 |
| Warshawski Properties Ltd | Real estate | 2023 |
| Warwick Court Residents Company Limited | Households | 2003 |
| Warwick Place (Reigate) Management Company Limited | Households | 2006 |
| Waterside Mews (Swanage) Management Limited | Households | 2006 |
| Waterslade Freehold Limited | Households | 1994 |
| Waterson Consultancy Limited | Professional & scientific | 2023 |
| WAU Custom London Ltd | Wholesale & retail | 2024 |
| Waverley Lodge Residents Company Limited | Households | 2004 |
| Wealden Cave & Mine Society | Arts & recreation | 2005 |
| Wealthscore Limited | Information & communication | 2026 |
| Websolutely Ltd | Professional & scientific | 2019 |
| Wefumo Limited | Hospitality | 2020 |
| Weldmet Limited | Construction | 1983 |
| Well House Nutfield Residents Limited | Households | 1993 |
| Wellmindspace Ltd | Information & communication | 2026 |
| Wesley James Agency Ltd. | Administrative & support | 2022 |
| Wesley James Group Ltd. | Hospitality | 2022 |
| West 1 Beauty Ltd | Other services | 2024 |
| West END Cleaning Services Ltd | Administrative & support | 2018 |
| West END Support Services Ltd | Construction | 2020 |
| Westar Technology Company Limited | Information & communication | 2014 |
| Westbrook Management Limited | Households | 2018 |
| Westbury Media Ltd | Professional & scientific | 2021 |
| Westcoats Properties Limited | Real estate | 2019 |
| Westcott & Williams Ltd | Wholesale & retail | 2018 |
| Westcott (Southwark) Management Company Limited | Households | 1982 |
| Westcott Car Limited Limited | Transport & logistics | 2025 |
| Westcott Garage Ltd | Wholesale & retail | 2004 |
| Westcott Lead Generation Ltd | Professional & scientific | 2018 |
| Westcott Property Services Ltd | Real estate | 2025 |
| Westcott Village Hub Community Interest Company | Wholesale & retail | 2023 |
| Westdale Investments Limited | Real estate | 2002 |
| Westfield Gardens Limited | Households | 2006 |
| Westhumble Sports Management Ltd. | Arts & recreation | 2012 |
| Weston EYE Care Ltd | Health & social care | 2018 |
| Westville Productions Limited | Administrative & support | 2006 |
| Westwils Ltd | Construction | 2017 |
| Westwood & Bower Limited | Professional & scientific | 2013 |
| Weylands Park Residents Association Limited | Households | 1996 |
| Whatmore Holdings Limited | Professional & scientific | 2016 |
| Wheelchair Transfers Ltd | Transport & logistics | 2018 |
| Wheelwright Court Ockley Management Company Limited | Households | 2009 |
| Whiston and Butler Ltd | Professional & scientific | 2023 |
| White and Wood Ltd | Real estate | 2026 |
| White Cube Motorsport Limited | Manufacturing | 2008 |
| White Digital Productions Ltd | Professional & scientific | 2024 |
| White Dove Lingerie Ltd | Professional & scientific | 2025 |
| White Down Consulting Limited | Professional & scientific | 2025 |
| White Horse Mews (Dorking) Residents Association Limited | Households | 2018 |
| Whitley London Limited | Wholesale & retail | 2018 |
| Wholetone Property Management Limited | Households | 1995 |
| Whwl Limited | Professional & scientific | 2009 |
| Wild by Design Limited | Administrative & support | 2021 |
| Wild Eden Limited | Administrative & support | 2020 |
| Wilfred & Meehan Limited | Real estate | 2021 |
| Will Davey Construction Ltd | Manufacturing | 2024 |
| William Richardson Design Limited | Arts & recreation | 2018 |
| Willis Fleming Enterprises Limited | Real estate | 1991 |
| Willow Consult Limited | Professional & scientific | 2025 |
| Willowmead Management Company (Dorking) Limited | Households | 1985 |
| Wills & Smerdon Limited | Professional & scientific | 2001 |
| Wills-Etc Limited | Professional & scientific | 2010 |
| Willy's Lamps Ltd | Administrative & support | 2021 |
| Winchester Mews Residents Company Limited | Households | 2015 |
| Windmill Place Coulsdon Ltd | Households | 2023 |
| Windmill Rise Residents Association Limited | Households | 1987 |
| Windsor Place Management Company (Crawley) Limited | Real estate | 2004 |
| Windycroft Freehold Limited | Real estate | 2014 |
| Winwood Productions Limited | Administrative & support | 1997 |
| Wisemans Insurance Services Limited | Financial services | 1999 |
| Witch ELF Studio Ltd | Information & communication | 2023 |
| With Strength and Grace Limited | Arts & recreation | 2016 |
| Within Design Holdings Limited | Financial services | 2016 |