| Wasperton Farm Management Company Limited | Households | 1994 |
| Wassall Film Limited | Information & communication | 2015 |
| Waste Management North Ltd | Water & waste | 2025 |
| WASTE2WORTH Global Ltd | Professional & scientific | 2012 |
| Wastefront Limited | Water & waste | 2020 |
| Wastefront Sunderland Limited | Water & waste | 2020 |
| Watchbury Consulting Limited | Information & communication | 2020 |
| Watchbury Property Ltd | Real estate | 2015 |
| Watches in a Nutshell Ltd | Wholesale & retail | 2024 |
| Watchstrapworld Limited | Wholesale & retail | 2011 |
| Water Enhancing Technologies (WET) Limited | Administrative & support | 2014 |
| Waterside Realisations Limited | Wholesale & retail | 2000 |
| Wathen Limited | Real estate | 2021 |
| Watts 1987 Limited | Construction | 2014 |
| Way Data Technologies UK Ltd | Information & communication | 2025 |
| Way Electrification Limited | Professional & scientific | 2014 |
| Waywest Properties Limited | Manufacturing | 1998 |
| Wcfc Ltd | Arts & recreation | 2026 |
| WE ARE Both Limited | Professional & scientific | 2019 |
| WE ARE Creative Equals Limited | Professional & scientific | 2016 |
| WE ARE the Drama Ltd | Administrative & support | 2023 |
| WE CAN DO Business Limited | Education | 2016 |
| WE Go Beyond Limited | Professional & scientific | 2017 |
| Website Management Services Limited | Information & communication | 2025 |
| Webtown Group Limited | Information & communication | 2022 |
| WED Coal Limited | Energy | 2012 |
| Wedgnock Motors Ltd | Wholesale & retail | 2020 |
| Wedo Life Limited | Administrative & support | 2016 |
| WEE Willie Winkle Ltd | Real estate | 2025 |
| Weis Technology Limited | Wholesale & retail | 2013 |
| Welcombe Homes Limited | Construction | 2023 |
| Welcome to the Madhouse Ltd | Households | 2020 |
| Weld Consult UK Ltd | Professional & scientific | 2011 |
| Weldworks Limited | Administrative & support | 2008 |
| Welf Accountants Limited | Professional & scientific | 2024 |
| Wellesbourne Sports and Community Centre | Arts & recreation | 2016 |
| Wellesbourne Wealth Limited | Financial services | 2017 |
| Weltec Biopower (UK) Limited | Manufacturing | 2010 |
| Wenman Healthcare Limited | Wholesale & retail | 1985 |
| Wenman Mobility Limited | Extraterritorial | 1997 |
| West Midlands Steel Ltd | Manufacturing | 2023 |
| West Rock & Saltisford (Warwick) Ltd | Administrative & support | 2013 |
| West Street Consultancy Limited | Professional & scientific | 2025 |
| West Street Kitchen Limited | Hospitality | 2023 |
| West's Bakery Ltd | Administrative & support | 2017 |
| Westgate Place (Warwick) Management Company Limited | Real estate | 2017 |
| Westgate Pre-School Ltd | Education | 2013 |
| Westgate Stores Ltd | Wholesale & retail | 2023 |
| Westgates (Warwick) Ltd | Real estate | 2025 |
| Westgrove House Limited | Real estate | 2012 |
| Westminster Associates Ltd. | Professional & scientific | 2005 |
| Weston Hall Farm Management Limited | Professional & scientific | 2000 |
| Westside Boxing Ltd | Education | 2024 |
| Westwood Associates & Management Limited | Real estate | 2022 |
| Westwood Grange Homes Ltd | Construction | 2021 |
| WET Beverages (Global) Ltd | Manufacturing | 2015 |
| WET Environmental Ltd | Water & waste | 2014 |
| WET Global Limited | Transport & logistics | 2015 |
| WET Holdings (Global) Limited | Professional & scientific | 2014 |
| WET Water & Environmental Technologies Limited | Water & waste | 2018 |
| WET Water Enhancing Technologies Ltd | Professional & scientific | 2015 |
| Wetex Fashion UK Limited | Wholesale & retail | 2023 |
| WF Sunderland Holding Limited | Financial services | 2020 |
| WH 911 Limited | Real estate | 2004 |
| WH4 Ltd | Professional & scientific | 2025 |
| Wharfedale Neurodiversity Ltd | Education | 2025 |
| WHG SPV (Maple Grove) Ltd | Construction | 2023 |
| Whiskers Cat Care - Warwick Ltd | Agriculture & fishing | 2025 |
| Whisky Chasers Limited | Wholesale & retail | 2022 |
| Whisson Property Investments Limited | Real estate | 2017 |
| Whisson Wealth Management Limited | Professional & scientific | 2021 |
| White House Cars Limited | Transport & logistics | 2014 |
| White Lyon Inn Ltd | Hospitality | 2025 |
| White Prism Consulting Ltd | Information & communication | 2019 |
| White Star Communications Ltd | Information & communication | 2016 |
| White Star Taverns Ltd | Hospitality | 2023 |
| Whitemoor Engineering Company Limited(The) | Real estate | 1963 |
| Whiteroom Brand Design Ltd | Professional & scientific | 2010 |
| Whiteroom Holdings Limited | Financial services | 2016 |
| Who's JAS Ltd | Arts & recreation | 2021 |
| Wholesale Utility Components Limited | Manufacturing | 2018 |
| Wick Pharma Ltd | Wholesale & retail | 2023 |
| Wickes Electrical Contractors Limited | Construction | 2009 |
| Widgit Software Limited | Information & communication | 2011 |
| Wild Cherry Media Ltd | Information & communication | 2019 |
| Wild Shukurs Brasserie Limited | Hospitality | 2024 |
| Wildflour Ltd | Manufacturing | 2025 |
| Wilkie Samways International Limited | Professional & scientific | 1988 |
| William Powell (Holdings) Limited | Extraterritorial | 2007 |
| William Powell Gunmakers Limited | Other services | 2021 |
| William Powell Limited | Other services | 1935 |
| William Powell Sporting Limited | Arts & recreation | 2000 |
| William Rose Interiors Ltd | Manufacturing | 2016 |
| William Ryder Ltd | Transport & logistics | 2009 |
| Williams of Saffron Walden Limited | Wholesale & retail | 1972 |
| Williamson Properties Limited | Real estate | 2013 |
| Willis Autosport Ltd | Wholesale & retail | 2020 |
| Willoughby Close Management Company Limited | Households | 2017 |
| Willow Warwickshire Ltd | Education | 2025 |
| Wilottiva Ltd | Financial services | 2025 |