| Westbrook Food and Wine Ltd | Wholesale & retail | 2012 |
| Westcave Investments Limited | Real estate | 2025 |
| Westley & Co Investments Ltd | Real estate | 2015 |
| Westley E Murray Limited | Health & social care | 2025 |
| Westminster Bathrooms Limited | Administrative & support | 2020 |
| Westrow Drive Limited | Real estate | 2023 |
| Westside Motors (Woodford) Limited | Professional & scientific | 2001 |
| WEY Bridging Finance Limited | Financial services | 2015 |
| WEY Bridging RAF Ltd | Financial services | 2025 |
| WEY Finance Holdings Ltd | Administrative & support | 2024 |
| WFC Retail Ltd | Wholesale & retail | 2016 |
| WFN Ltd | Information & communication | 2013 |
| Wharris Ltd. | Information & communication | 2021 |
| Wheel Power (SE4) Limited | Wholesale & retail | 2002 |
| When Nobody's Watching Ltd | Information & communication | 2014 |
| White Cube Construction (South East) Ltd | Administrative & support | 2011 |
| White Eagle Investments Limited | Real estate | 2025 |
| White Velvet Design Limited | Professional & scientific | 2015 |
| Whitecat Joinery & Carpentry Ltd | Manufacturing | 2011 |
| Whitehall Tenants Limited | Professional & scientific | 1996 |
| Whitehaus Limited | Other services | 2013 |
| Whitehaus Projects Limited | Construction | 2019 |
| Whizability Ltd | Information & communication | 2017 |
| Wholesale MCR Ltd | Wholesale & retail | 2026 |
| Wickford GAS Limited | Wholesale & retail | 2004 |
| Widdington Limited | Financial services | 1990 |
| Wide Open Space Creative Limited | Other services | 2010 |
| Wiggy Productions Limited | Arts & recreation | 2012 |
| Wiktor Kulik Medical Services Ltd | Health & social care | 2014 |
| Wilcox Solutions Limited | Professional & scientific | 2014 |
| Will Carling Management Limited | Administrative & support | 1999 |
| Will Steel Enterprises Limited | Education | 2020 |
| Will Steel Group Limited | Financial services | 2025 |
| William White Meats Group Limited | Financial services | 2019 |
| William White Meats Limited | Manufacturing | 1995 |
| Willow Connect Ltd | Real estate | 2016 |
| Willow Wealth Consultants Ltd | Professional & scientific | 2016 |
| Willows Memorials Limited | Other services | 2004 |
| Willows Property Company Limited | Administrative & support | 1996 |
| Willsave Limited | Real estate | 2001 |
| Wilton Court (Woodford Green) Limited | Households | 1982 |
| Windust Operations Limited | Administrative & support | 2007 |
| Winston Property Maintenance Ltd | Construction | 2024 |
| Wint Augustus Limited | Administrative & support | 1999 |
| Wint Augustus Property Investments Limited | Real estate | 2005 |
| Winv Coin Limited | Administrative & support | 2017 |
| Winv Token Limited | Administrative & support | 2017 |
| Witan Labs Ltd | Information & communication | 2025 |
| Witham Tandoori Limited | Hospitality | 2022 |
| Wizann Knowledge School Limited | Administrative & support | 2020 |
| WJ and R Ltd | Other services | 2013 |
| Wjjd Nursery Ltd | Health & social care | 2021 |
| WL Services Ltd | Real estate | 2019 |
| Woca Limited | Real estate | 2019 |
| Wolf Group Ltd | Administrative & support | 2021 |
| Won'T Ring Pilates Ltd | Arts & recreation | 2024 |
| Wonder Wonder Ltd | Arts & recreation | 2024 |
| Wonderkin UK Ltd | Wholesale & retail | 2023 |
| Wood NOT Trees Limited | Professional & scientific | 2013 |
| Woodford Bowling Club (2020) Ltd | Arts & recreation | 2020 |
| Woodford Construction and Interiors Limited | Construction | 2020 |
| Woodford Education Ltd | Education | 2026 |
| Woodford Freeholders Ltd | Households | 2023 |
| Woodford Gates Limited | Administrative & support | 2004 |
| Woodford Green Accountancy Services Limited | Professional & scientific | 2010 |
| Woodford Green Funeral Directors Limited | Other services | 2011 |
| Woodford Green Limited | Real estate | 2015 |
| Woodford Green Preparatory School Limited | Education | 1959 |
| Woodford Home Care Services Ltd | Wholesale & retail | 2020 |
| Woodford Homes Limited | Real estate | 2026 |
| Woodford Mobile Tyres Ltd | Wholesale & retail | 2024 |
| Woodford Mortgages Limited | Financial services | 2023 |
| Woodford Motor Co. Limited | Wholesale & retail | 1957 |
| Woodford Muslim Cultural Centre Ltd | Health & social care | 2013 |
| Woodford Newsagents Ltd | Wholesale & retail | 2021 |
| Woodford Optical Ltd | Professional & scientific | 2024 |
| Woodford Property Investments Limited | Real estate | 2020 |
| Woodford Rugby Club (Trading) Limited | Arts & recreation | 2016 |
| Woodford Rugby Club Limited | Arts & recreation | 2016 |
| Woodford Rugby Ground Limited | Arts & recreation | 1928 |
| Woodford Technical Solutions Limited | Professional & scientific | 2019 |
| Woodford Terem Ltd | Real estate | 2009 |
| Woodford Thermal Services Limited | Construction | 2022 |
| Woodhouse Mechanical Limited | Administrative & support | 2018 |
| Woodhouse Services Group Ltd | Administrative & support | 2019 |
| Woodland Leathers Limited | Manufacturing | 2000 |
| Woodlands (Croydon) Ltd | Real estate | 2021 |
| Woodmead Properties Limited | Administrative & support | 1970 |
| Woods Media Ltd | Information & communication | 2023 |
| Woodside House Medical Ltd | Health & social care | 2025 |
| Woodstock Residential Limited | Real estate | 2009 |
| Woodwell Property Company Limited | Professional & scientific | 1983 |
| Wooll Ltd | Information & communication | 2023 |
| Woopi Ltd | Manufacturing | 2019 |
| Workhaus Productions Limited | Administrative & support | 2026 |
| World Deli Limited | Information & communication | 2020 |
| World MAX Limited | Construction | 2017 |
| World Telecom Ltd | Administrative & support | 2025 |
| World Translation Services Limited | Professional & scientific | 2019 |
| Worldwide Bargains Limited | Wholesale & retail | 2018 |