| Vrancea DRY Lining Ltd | Construction | 2015 |
| VSL Group Holdings Limited | Administrative & support | 2010 |
| VSM & Sons Ltd | Construction | 2024 |
| VT Dryliners Ltd | Construction | 2018 |
| VTN Metal & Network Solutions Ltd | Construction | 2025 |
| Vulcan Fire and Paint Limited | Construction | 2024 |
| Vulcan Midco Limited | Financial services | 2024 |
| Vulcan Services Engineering Limited | Professional & scientific | 2020 |
| Vulcan Topco Limited | Financial services | 2024 |
| Vuovo Ltd | Construction | 2022 |
| VVE Construction Ltd | Construction | 2025 |
| VZK Limited | Transport & logistics | 2012 |
| W & H Engineering Limited | Manufacturing | 1998 |
| W & L Anderson Ltd | Construction | 2007 |
| W Hardy Drainage Solutions Limited | Water & waste | 2018 |
| W Humbles Renovation & Maintenance Ltd | Construction | 2021 |
| W J W Services Essex Limited | Construction | 2026 |
| W L Construction Ltd | Construction | 2018 |
| W L Developments (Brentwood) Ltd | Construction | 2022 |
| W S Forklift Training (Essex) Limited | Education | 2017 |
| W&H Building Services Ltd | Construction | 2019 |
| W&H Holdings 1 Limited | Financial services | 2024 |
| W&H Holdings 2 Limited | Financial services | 2024 |
| W&H Property Limited | Financial services | 2024 |
| W.H. Leary Limited | Administrative & support | 2000 |
| W.I.P Properties Ltd | Real estate | 2017 |
| W.I.S.E. Underwriting Agency Limited | Administrative & support | 1997 |
| W.M.Couper Limited | Wholesale & retail | 1933 |
| Wadesway Butchers Limited | Wholesale & retail | 2025 |
| Wainman Enterprises Ltd | Wholesale & retail | 2022 |
| Wakering PUB Company Limited | Hospitality | 2025 |
| Walby Accounts Limited | Professional & scientific | 2024 |
| Waldon House Management Limited | Households | 2007 |
| Walford Contracts Limited | Construction | 2026 |
| Walk on Water Properties Limited | Hospitality | 2007 |
| Walker Advanced Technologies Limited | Administrative & support | 2025 |
| Walker Fire Protection Ltd | Construction | 2022 |
| Walker Guidance Systems Limited | Manufacturing | 2016 |
| Wallcovering Installers London Ltd | Construction | 2019 |
| Wallington Homes Ltd | Real estate | 2020 |
| Walsingham House Management Company Limited | Households | 2022 |
| Waltham Drywall Ltd | Construction | 2022 |
| Waltham Properties Limited | Real estate | 2013 |
| Walton Property Management Solutions Limited | Administrative & support | 2023 |
| Walton Property Services Limited | Real estate | 2002 |
| Wanaka Cosmetics Ltd | Other services | 2022 |
| Wandford Limited | Hospitality | 2025 |
| Wang Wealth Management Ltd | Financial services | 2023 |
| Warburtons of Leigh Limited | Wholesale & retail | 2004 |
| Ward Decorators Ltd | Construction | 2021 |
| Ward-Smith Interiors Limited | Manufacturing | 2023 |
| Wards Luxury Travel Limited | Administrative & support | 2025 |
| Wards of Essex Property Management Ltd | Real estate | 2021 |
| Wareco Ltd | Administrative & support | 2021 |
| Warley Design Solutions Limited | Professional & scientific | 2008 |
| Warms Relocation Property Limited | Real estate | 2021 |
| Warner Taxis Limited | Transport & logistics | 2013 |
| Wash & Shine HCW Ltd | Other services | 2012 |
| Wasp Civil Engineering Ltd | Construction | 2013 |
| Waste Water Solutions (London) Ltd | Water & waste | 2009 |
| Water FED Pole Ltd | Administrative & support | 2014 |
| Waterbrooks Care Services Ltd | Administrative & support | 2023 |
| Waterfront Homes Limited | Construction | 2003 |
| Waterjet Profilers Ltd | Manufacturing | 2010 |
| Waterloo Chambers Management Limited | Households | 2024 |
| Waters Edge Construction Limited | Construction | 2014 |
| Watersedge Building Developments Limited | Construction | 2014 |
| Waterson Homes Limited | Construction | 2012 |
| Waterson Properties Limited | Construction | 2023 |
| Watertight Roofing Essex Ltd | Construction | 2023 |
| Waves Educational Recruitment Limited | Education | 2021 |
| Wavetec Ltd | Construction | 2011 |
| Waycap Management Services Limited | Real estate | 2019 |
| Waymade Healthcare Pension Plan Nominee Co. (NO. 2) Limited | Administrative & support | 2009 |
| Waymade Healthcare Pension Plan Nominee Co. Limited | Financial services | 2001 |
| Waymade Healthcare Scheme Nominees Limited | Real estate | 2009 |
| Waymade PLC | Wholesale & retail | 1984 |
| Waysuclothing Ltd | Manufacturing | 2026 |
| WB Sealants Ltd | Construction | 2007 |
| WBS Property Limited | Real estate | 2022 |
| WCM Group Limited | Financial services | 2016 |
| WCM UAE Ltd | Manufacturing | 2016 |
| WDH Talent Limited | Administrative & support | 2023 |
| WE Buy Your Motor Car Limited | Wholesale & retail | 2021 |
| WE Connections Limited | Real estate | 2020 |
| Web Capio Limited | Information & communication | 2014 |
| Web Tech Mind PTY Ltd | Information & communication | 2025 |
| Webacre Limited | Construction | 2026 |
| Webb Resolutions Limited | Professional & scientific | 2008 |
| Webbs Welding & Pipework Ltd | Construction | 2026 |
| Webc Creator Limited | Wholesale & retail | 2025 |
| Webshil Group Ltd | Transport & logistics | 2021 |
| Webshil Transport Consultancy Ltd | Transport & logistics | 2019 |
| Website Support Ltd | Information & communication | 2025 |
| Wedding Video Essex Ltd | Information & communication | 2022 |
| Wedshape Transformations Ltd | Other services | 2024 |
| Welcome Mortgages Limited | Financial services | 2020 |
| Weldtech Ltd | Construction | 2025 |
| Wellafiles Limited | Health & social care | 2012 |
| Wellbeing 4 Life CIC | Wholesale & retail | 2015 |