| W Beans Ltd | Real estate | 2022 |
| W.B. CAD Solution Ltd | Transport & logistics | 2019 |
| W.H.Palmer & Co.(Industries)Limited | Professional & scientific | 1962 |
| W.J.Russell & Son(Dunchurch)Limited | Agriculture & fishing | 1963 |
| W1D Personal Management Limited | Hospitality | 2016 |
| Wadeson Surveying Ltd | Professional & scientific | 2025 |
| Waggin’ Wash Ltd | Other services | 2025 |
| Wago Limited | Wholesale & retail | 1990 |
| Wagsmore Ltd | Other services | 2025 |
| Waldi Ltd | Transport & logistics | 2021 |
| Waley Way Ltd | Construction | 2025 |
| Walikmontana Ltd | Transport & logistics | 2025 |
| Walkbro Ltd | Wholesale & retail | 2023 |
| Walrus (Wykin) Limited | Construction | 2017 |
| Walsgrave Road Investments (Coventry) Limited | Real estate | 1966 |
| Walsh and Watson Limited | Financial services | 2005 |
| Walter Rudy (UK) Limited | Professional & scientific | 2022 |
| Wammajam Media Ltd | Information & communication | 2008 |
| Wanda Fashions Ltd | Wholesale & retail | 2020 |
| Wander Works U.K Ltd | Information & communication | 2025 |
| Ward Burges Ltd | Construction | 2012 |
| Wardall Construction Ltd | Construction | 2014 |
| Warm Futures Limited | Construction | 2026 |
| Warna Properties Ltd | Real estate | 2026 |
| Warren Elec Ltd | Construction | 2020 |
| Warrens Limited | Administrative & support | 2001 |
| Warrens UK Limited | Administrative & support | 2008 |
| Warrier Ventures Limited | Real estate | 2025 |
| Warwick Care Services for YOU Ltd. | Administrative & support | 2019 |
| Warwick Photography Studio Ltd | Professional & scientific | 2022 |
| Warwickshire Decking Specialists Limited | Administrative & support | 2024 |
| Warwickshire Decorating Contracts Ltd | Construction | 2018 |
| Warwickshire Event Catering Ltd | Hospitality | 2017 |
| Warwickshire First AID Training Limited | Administrative & support | 2016 |
| Warwickshire Gates & Fabrications Limited | Construction | 2004 |
| Warwickshire Home & Garden Limited | Administrative & support | 2026 |
| Warwickshire Horse Transport Ltd | Transport & logistics | 2020 |
| Warwickshire Illustrations Limited | Real estate | 1978 |
| Warwickshire Narrowboats Limited | Professional & scientific | 1987 |
| Warwickshire Property Partners Ltd | Real estate | 2018 |
| Warwickshire Roofing and Carpentry Limited | Manufacturing | 2024 |
| Water Quality and Technical Services Ltd | Water & waste | 2021 |
| Water Quality Services Ltd | Water & waste | 2023 |
| Waters Touch CIC | Other services | 2020 |
| Waterside Transport LLP | | 2019 |
| Watson & Stow Limited | Professional & scientific | 2026 |
| Watts (Rugby) Limited | Water & waste | 2003 |
| WAX Learning Solutions Ltd | Information & communication | 2025 |
| WAY2PAYE Limited | Professional & scientific | 2008 |
| Waylong Limited | Information & communication | 1990 |
| Wayne and Tiah Solutions Ltd | Transport & logistics | 2025 |
| Wayne John Bucknall Ltd | Extraterritorial | 2024 |
| Wayne Moore Transport Ltd | Transport & logistics | 2012 |
| Waystreme Limited | Real estate | 2001 |
| Wbldn Limited | Wholesale & retail | 2013 |
| WDB Aviation Ltd | Transport & logistics | 2021 |
| Wdeny Ltd | Transport & logistics | 2017 |
| WDM Contractors Ltd | Construction | 2014 |
| WE ARE Rocket Limited | Information & communication | 2002 |
| Wealthwise Financial Management Limited | Professional & scientific | 2013 |
| Webb Ellis AD1823 Ltd | Wholesale & retail | 2020 |
| Webb Ellis Autocentre Ltd | Wholesale & retail | 2014 |
| Webb Ellis Cars Limited | Transport & logistics | 2015 |
| Webb Ellis Limited | Wholesale & retail | 1991 |
| Webbserv Limited | Professional & scientific | 2025 |
| Webmania Computer Services Ltd | Information & communication | 1998 |
| Webropol Limited | Professional & scientific | 2007 |
| Wedding Car Hire Rugby Ltd | Transport & logistics | 2023 |
| Weelead Limited | Information & communication | 2026 |
| Weld Holdings Limited | Financial services | 2024 |
| Welland Limited | Households | 1992 |
| Wellandsafe Ltd | Professional & scientific | 2024 |
| Welling Homes Limited | Real estate | 2023 |
| Wells & Partners Ltd | Construction | 2024 |
| Wells Electrical Solutions Limited | Administrative & support | 2009 |
| Wells Terrace Limited | Construction | 2011 |
| Welton Enterprises Limited | Financial services | 2022 |
| Welton House Management Limited | Households | 2012 |
| Wensley & Lawz Limited | Other services | 2007 |
| Weonlymot (Holdings) Limited | Administrative & support | 2013 |
| Weonlymot Management Limited | Professional & scientific | 2013 |
| Weonlymot(Receipts) Limited | Professional & scientific | 2013 |
| Werens Builders Ltd | Construction | 2018 |
| Wernerr Ltd | Transport & logistics | 2014 |
| Werryhomes Ltd | Real estate | 2024 |
| Werrys Ltd | Information & communication | 2011 |
| West Kent Group 2 Ltd | Professional & scientific | 2018 |
| West Side Property Group Ltd | Construction | 2016 |
| Westfield Farm Equipment Limited | Wholesale & retail | 2008 |
| Westminster Law Northamptonshire Ltd | Professional & scientific | 2015 |
| Weston Additive Ltd | Manufacturing | 2025 |
| Westport Treasury Limited | Professional & scientific | 2025 |
| Wfts Limited | Extraterritorial | 2010 |
| Whaley Estates Limited | Real estate | 2025 |
| Whallop Ltd | Wholesale & retail | 2021 |
| Wharf Farm Property Ltd | Construction | 2024 |
| What's Yours IS Mine Ltd | Wholesale & retail | 2021 |
| Whatnot Residential Ltd | Real estate | 2021 |
| Wheatley Property Ltd | Real estate | 2019 |
| White Wave IT Ltd | Information & communication | 2012 |