| Walton's Landscapes Ltd | Administrative & support | 2016 |
| Warehouse 67 Limited | Information & communication | 2015 |
| Warehouse Direct (Industrial) Limited | Wholesale & retail | 2002 |
| Warmer Solar Limited | Construction | 2024 |
| Warmer Solutions Ltd | Construction | 2020 |
| Wasp PR Ltd | Professional & scientific | 2017 |
| Webfloor Ltd | Wholesale & retail | 2018 |
| West London's Mobile Tyres Limited | Wholesale & retail | 2021 |
| Weston Court Residences Limited | Households | 2020 |
| Westway Coach Services (Holdings) Limited | Professional & scientific | 2014 |
| Westway Coach Services Limited | Transport & logistics | 2009 |
| Westway Refurbishments Limited | Real estate | 2022 |
| Wheatley & Sons,Limited | Construction | 1935 |
| White Hart Cottages Management Limited | Households | 2014 |
| Whizzfit Limited | Arts & recreation | 2013 |
| Who's Catering Ltd | Hospitality | 2018 |
| Whooshusa.Com Limited | Administrative & support | 2007 |
| Wilton Gardens Management Company Ltd | Households | 2014 |
| Wojciech Kwasny Ltd | Transport & logistics | 2014 |
| Woodsgift Interiors Limited | Construction | 2021 |
| Woodsgift Joinery Ltd | Manufacturing | 2022 |
| Woolfield House Limited | Real estate | 2020 |
| Wright Shine Limited | Wholesale & retail | 2022 |
| WTM2308 Ltd | Professional & scientific | 2023 |
| Xelerate Setups Limited | Information & communication | 2024 |
| Yellow Property Investments Limited | Real estate | 2003 |
| YIN and Sonic Ltd | Education | 2024 |
| Your Osteopathy Ltd | Health & social care | 2025 |
| Yuan Property Management Limited | Real estate | 2021 |
| Z&T Consulting Ltd | Professional & scientific | 2026 |
| Zarbir Limited | Wholesale & retail | 2026 |
| Zenek Holdings Ltd | Other services | 2011 |
| Zenek Ltd | Real estate | 2018 |
| Zhuimeng Cloud UK Ltd | Professional & scientific | 2020 |