| West Wickham Visionplus Limited | Wholesale & retail | 2007 |
| West Yorkshire Gate Repairs Ltd | Construction | 2025 |
| Westbury Groundworks Limited | Construction | 2014 |
| Westfield Ecommerce Ltd | Wholesale & retail | 2022 |
| Westhill Specsavers Limited | Wholesale & retail | 2012 |
| Westlecot Business Consultants Limited | Administrative & support | 2018 |
| Westminster Dredging Company Limited | Construction | 1982 |
| Westminster Gravels Limited | Construction | 1989 |
| Weston Favell Specsavers Limited | Wholesale & retail | 2018 |
| Weston Super Mare Specsavers Hearcare Limited | Wholesale & retail | 2007 |
| Westonmomz Properties Ltd | Real estate | 2019 |
| Westway Cross Specsavers Hearcare Limited | Wholesale & retail | 2018 |
| Westway Specsavers Limited | Wholesale & retail | 2014 |
| Westwood Court Residents Limited | Households | 1962 |
| WET Nose & Cosy Toes Ltd | Other services | 2026 |
| Wetherby Specsavers Limited | Wholesale & retail | 2004 |
| Wetherby Visionplus Limited | Wholesale & retail | 2004 |
| Weymouth Specsavers Hearcare Limited | Wholesale & retail | 2017 |
| Weymouth Visionplus Limited | Wholesale & retail | 1988 |
| WG (Propco) Limited | Construction | 2021 |
| WGM Associates Ltd | Professional & scientific | 2017 |
| Wharfstead Properties SPV Limited | Real estate | 2026 |
| Wharton Construction Management Limited | Administrative & support | 2008 |
| Whats the Occasion 2025 Limited | Wholesale & retail | 2025 |
| Wheal Ventures Limited | Information & communication | 2015 |
| Wheatsheaf Mews Management Company Limited | Households | 2012 |
| Wheel Trims Mobile Barber Ltd | Other services | 2025 |
| Wheelsaway Ltd | Wholesale & retail | 2023 |
| Wheelsure Holdings PLC | Professional & scientific | 2003 |
| Whiff Limited | Wholesale & retail | 2016 |
| Whirlow Developments Limited | Real estate | 2011 |
| Whitby Specsavers Limited | Wholesale & retail | 2004 |
| Whitby Visionplus Limited | Wholesale & retail | 2004 |
| Whitchurch Specsavers Limited | Wholesale & retail | 2021 |
| White Consultancy (Services) Ltd | Professional & scientific | 2014 |
| White Hart Lane Management Company Limited | Households | 2018 |
| White Rose (Newton Lane) Limited | Hospitality | 2025 |
| White Rose Specsavers Limited | Wholesale & retail | 2017 |
| White Scaffolding Limited | Construction | 2026 |
| White Sentinel Cyber Security Ltd | Information & communication | 2026 |
| White Stone Driver Training Ltd | Education | 2022 |
| White Stone Drivers CPC Ltd | Education | 2025 |
| Whitebeam 1955 Limited | Extraterritorial | 2014 |
| Whitechapel Specsavers Limited | Wholesale & retail | 2018 |
| Whitehaven Visionplus Limited | Wholesale & retail | 2003 |
| Whiteley & Stirling Limited | Professional & scientific | 2025 |
| Whiteley Construction Hampshire Ltd | Construction | 2024 |
| Whiteley Events Ltd | Information & communication | 2012 |
| Whiteley K (NO.1) Management Company Limited | Households | 2003 |
| Whiteley K (NO.3) Management Company Limited | Households | 2004 |
| Whiteley K (NO.4) Management Company Limited | Households | 2004 |
| Whiteley K (NO.5) Management Company Limited | Households | 2004 |
| Whiteley Plant Ltd | Wholesale & retail | 2018 |
| Whiteley Specsavers Limited | Wholesale & retail | 2014 |
| Whiteley Village Veterinary Centre Limited | Professional & scientific | 2012 |
| Whitewood Media Village Estate Management Limited | Households | 2015 |
| Whitewood Media Village GP Limited | Construction | 2015 |
| Whitewood Media Village Limited Partnership | | 2015 |
| Whitewood Media Village Nominee Limited | Construction | 2015 |
| Whitfield Investment Group Limited | Construction | 2025 |
| Whitley Bay Specsavers Limited | Wholesale & retail | 2018 |
| Whitstable Specsavers Limited | Wholesale & retail | 2008 |
| Whitstable Visionplus Limited | Wholesale & retail | 2008 |
| Whitty Homes Ltd | Construction | 2022 |
| WHY Waight Property Limited | Real estate | 2020 |
| WHY Waight Trading Limited | Households | 2020 |
| Wick Specsavers Limited | Wholesale & retail | 2011 |
| Wickborne Homes and Developments Limited | Hospitality | 1998 |
| Wickford Specsavers Limited | Wholesale & retail | 2010 |
| Wickham Car Servicing Limited | Manufacturing | 2014 |
| Wickham Coffeehouse Limited | Hospitality | 2022 |
| Wickham Community Association | Education | 2001 |
| Wickham Community Land Trust | Administrative & support | 2008 |
| Wickham Dental Ltd | Health & social care | 2020 |
| Wickham Nails & Beauty Ltd | Other services | 2020 |
| Wickham Soap Co. Ltd | Manufacturing | 2018 |
| Wickham Wiring Ltd | Construction | 2016 |
| Wicormarine Limited | Arts & recreation | 1969 |
| Wigan Specsavers Hearcare Limited | Wholesale & retail | 2006 |
| Wigglyline Productions Ltd | Information & communication | 2011 |
| Wight Shipyard Company Limited | Manufacturing | 2016 |
| Wightley Construction Limited | Construction | 2008 |
| Wightman Construction Limited | Administrative & support | 2017 |
| Wightman Eco Developments Ltd | Construction | 2021 |
| Wigston Specsavers Hearcare Limited | Wholesale & retail | 2017 |
| Wigston Specsavers Limited | Wholesale & retail | 2006 |
| Wigston Visionplus Limited | Wholesale & retail | 2006 |
| Wilcor Homes Ltd | Construction | 2022 |
| Wildbrook Developments Ltd | Construction | 2025 |
| Wildwood Management Limited | Households | 2026 |
| Wilkinson’S Jewellery&Watches Ltd | Wholesale & retail | 2020 |
| Will Brick Limited | Construction | 2017 |
| Will Rose Motorsport Ltd | Wholesale & retail | 2019 |
| Willard Conservation Limited | Manufacturing | 2005 |
| Willdon Home Improvements and Building Ltd | Construction | 2021 |
| William Price Trust Company | Education | 1992 |
| Williams Denis Limited | Real estate | 2017 |
| Williams Financial Ltd | Professional & scientific | 2024 |
| Williams Garden Services Ltd | Administrative & support | 2021 |
| Williams Investment Group Ltd | Real estate | 2020 |