| Vw-Leos Investment Holdings Ltd | Real estate | 2020 |
| VWD6 LLP | | 2015 |
| Vyizraco Limited | Financial services | 2024 |
| Vyran Consulting Ltd | Public administration | 2019 |
| W & H Jones Catering Limited | Hospitality | 2013 |
| W H Lane & Co Limited | Wholesale & retail | 2017 |
| W Nagel Limited | Wholesale & retail | 1990 |
| W V Asset Management 1 Ltd | Real estate | 2024 |
| W V Asset Management Ltd | Real estate | 2024 |
| W.B. Property & Developments Limited | Administrative & support | 2025 |
| Waifs and Strays Films Limited | Other services | 2017 |
| Wakeup-Safe Limited | Information & communication | 2018 |
| Walid & Naweed Ltd | Wholesale & retail | 2019 |
| Walk Forward Tours Ltd | Administrative & support | 2025 |
| Walk in the Rain Limited | Information & communication | 2011 |
| Walker Media Productions Ltd | Professional & scientific | 2025 |
| Walkerway Limited | Real estate | 1999 |
| Wall Hall (Aldenham) Management Company Limited | Households | 2005 |
| Wallis Wealth Limited | Professional & scientific | 2011 |
| Walljam Limited | Manufacturing | 2004 |
| Wallop Rigging Services Ltd | Information & communication | 2025 |
| Walton Street Hull Limited | Other services | 2018 |
| Waltons International Limited | Real estate | 2002 |
| Wardstar Limited | Health & social care | 2020 |
| Warmer Home Solutions Ltd | Construction | 2023 |
| Warmhaus Heating Ltd | Wholesale & retail | 2016 |
| Warr Business Services Limited | Administrative & support | 2017 |
| Warr Properties (Leicester) Limited | Real estate | 2004 |
| Warr Properties (Norwich) Limited | Real estate | 2002 |
| Warr Works Ltd | Construction | 2022 |
| Wash That Dog Limited | Other services | 2025 |
| Wastewize UK Limited | Water & waste | 2018 |
| WAT the Brand Ltd | Wholesale & retail | 2020 |
| Watbb Consulting Ltd | Professional & scientific | 2018 |
| Waterfall Commercial Management Limited | Professional & scientific | 2017 |
| Watermark Films Limited | Information & communication | 1997 |
| Watershore Resources Ltd | Professional & scientific | 2022 |
| Wave USA Holdings Limited | Administrative & support | 2018 |
| Waverley Band Ltd | Arts & recreation | 2024 |
| Waverly Carbon Ltd | Manufacturing | 2011 |
| Waverly Europe Limited | Financial services | 2022 |
| Waxxi Works Ltd | Arts & recreation | 2024 |
| Way 2 Wealth Ltd | Financial services | 2025 |
| Way of Wealth Ltd | Professional & scientific | 2026 |
| Wayfields PO Limited | Wholesale & retail | 2012 |
| Waymaker Music | Arts & recreation | 2022 |
| Wayrose Limited | Real estate | 2025 |
| WB Services (London) Limited | Other services | 2011 |
| WD Diagnostics Limited | Health & social care | 2021 |
| WD6 Woodworks Ltd | Information & communication | 2015 |
| WE ARE WE Wear Limited | Wholesale & retail | 2018 |
| WE ARE Yarn Ltd | Wholesale & retail | 2023 |
| WE Closing Limited | Extraterritorial | 1999 |
| Weakling Limited | Arts & recreation | 2020 |
| Wealthinvest Consulting (UAE) Limited | Real estate | 2024 |
| Wealthinvest Consulting (UK) Limited | Real estate | 2023 |
| Wealthinvest UAE Limited | Real estate | 2025 |
| Webboss Ltd | Information & communication | 2011 |
| Weboratory Ltd | Information & communication | 2019 |
| Webster Charles Limited | Professional & scientific | 2012 |
| Webster Construction Ltd | Construction | 2016 |
| Webster Design and Build Limited | Construction | 2017 |
| Webwide I.T. Limited | Information & communication | 2007 |
| Weezun Ltd | Wholesale & retail | 2015 |
| Welham Green DP Ltd | Health & social care | 2017 |
| Well World Group Ltd | Arts & recreation | 2026 |
| Wellington House Management Company (RTM) Limited | Professional & scientific | 2004 |
| Wellsted Services Ltd | Financial services | 2023 |
| Welltech Dental LAB Ltd | Health & social care | 2022 |
| Welter Holdings Ltd | Financial services | 2024 |
| Wentbridge Investments Ltd | Construction | 2016 |
| Wentbridge Properties Ltd | Real estate | 2019 |
| Wentbridge Services Ltd | Construction | 2015 |
| Wentworth Capital Limited | Construction | 2025 |
| Wentworth Ventures Limited | Households | 2025 |
| West 11 Propco Limited | Real estate | 2025 |
| West Hill Court Management Co. Limited | Households | 1974 |
| West London Boxing & Fitness Limited | Arts & recreation | 2018 |
| West London Gynaecology Ltd | Administrative & support | 2017 |
| West London Whiskers Ltd | Other services | 2025 |
| West Melton Lodge Care Home Ltd | Health & social care | 2024 |
| West One Development Finance Limited Partnership | | 2018 |
| West Three Colour Solutions Limited | Manufacturing | 2011 |
| Westbourne Terrace Freehold Ltd | Real estate | 2010 |
| Westbridge Technology Ltd | Wholesale & retail | 2022 |
| Westbury Court (Hendon) Management Limited | Households | 1996 |
| Westerfield Properties Limited | Real estate | 1961 |
| Westfield Court Management Limited | Real estate | 2015 |
| Westfirm Eco Traders Ltd | Construction | 2022 |
| Westgate Healthcare (Aylesbury) Limited | Health & social care | 2005 |
| Westgate Healthcare (Borehamwood) Limited | Health & social care | 2017 |
| Westgate Healthcare (Braintree) Limited | Health & social care | 2013 |
| Westgate Healthcare (Cheshunt) Limited | Health & social care | 2022 |
| Westgate Healthcare (Chorleywood) Limited | Health & social care | 2019 |
| Westgate Healthcare (Hemel Hempstead) Limited | Health & social care | 2005 |
| Westgate Healthcare (Monkston) Limited | Health & social care | 2022 |
| Westgate Healthcare (Wanstead) Limited | Health & social care | 2012 |
| Westgate Healthcare Group Limited | Professional & scientific | 2006 |
| Westgate Healthcare Limited | Health & social care | 1992 |
| Westgate Healthcare Properties Limited | Health & social care | 2016 |