| Whitehouse Plastics Limited | Manufacturing | 1988 |
| Whites Retail Installations Ltd | Manufacturing | 2019 |
| Whitestone House Limited | Health & social care | 2024 |
| Whitfield Consultants Ltd | Real estate | 2013 |
| Whittaker Bros(Rugby)Limited | Wholesale & retail | 1955 |
| Wholesale Lace Robes Ltd | Wholesale & retail | 2020 |
| Wholistic Partnership Ltd | Construction | 2025 |
| WHY Technologies Ltd | Information & communication | 2023 |
| Whytes Investment (Holdings) Limited | Financial services | 2018 |
| WI Chef Limited | Hospitality | 2016 |
| WI Chef Outside Catering Limited | Hospitality | 2025 |
| Wicher Ltd | Transport & logistics | 2011 |
| Wideawake Training Ltd | Education | 2011 |
| Wiggins & Hart Ltd | Hospitality | 2025 |
| Wike Co 2026 Ltd | Hospitality | 2026 |
| Wild House Renovations Ltd | Construction | 2021 |
| Wild Inspired Life Ltd | Other services | 2011 |
| Wild Peony Marketing & Creative Limited | Administrative & support | 2026 |
| Wild Rose Equestrian Ltd | Agriculture & fishing | 2026 |
| Wild's of Warwick Ltd | Hospitality | 2024 |
| Wilda's Event Caterers Limited | Hospitality | 2024 |
| Wildnote Alchemy Ltd | Manufacturing | 2025 |
| Wilfred James Limited | Professional & scientific | 2009 |
| Wilhart Homes Limited | Construction | 2025 |
| Will Green Promotions Ltd | Arts & recreation | 2024 |
| Will Harris Guiding Ltd | Administrative & support | 2022 |
| Will Harris Limited | Information & communication | 2026 |
| Will to Lead Ltd | Professional & scientific | 2023 |
| William Rose Projects Limited | Professional & scientific | 2026 |
| William Rose Property Limited | Real estate | 2018 |
| William Rose Property Services Limited | Real estate | 2016 |
| Williamdale Reservations Ltd | Other services | 2024 |
| Willie Poole Motorsport Services Ltd | Manufacturing | 2009 |
| Willoughby Park Polo Gear Limited | Wholesale & retail | 2002 |
| Willoughby Property Management Services Ltd | Real estate | 2025 |
| Willow Barn Ltd | Wholesale & retail | 2021 |
| Willow Lakes & Fields Ltd | Arts & recreation | 2023 |
| Willow Leamington Limited | Wholesale & retail | 2014 |
| Willow Park School Ltd | Education | 2019 |
| Winceby Limited | Manufacturing | 2000 |
| Winchester Court Residents RTM Company Limited | Households | 2010 |
| Winchy Limited | Wholesale & retail | 2020 |
| Windows and Beyond Limited | Construction | 2023 |
| Windy Logistics Ltd | Construction | 2017 |
| Winova Ltd | Construction | 2024 |
| Winspeed Innovation Ltd | Professional & scientific | 2023 |
| Winston Hospitality Ltd | Hospitality | 2025 |
| Wisam Hasan Limited | Professional & scientific | 2014 |
| Wise Mind Training Ltd | Education | 2019 |
| Wishing Well Nurseries Limited | Education | 2002 |
| Wishworks Limited | Information & communication | 2012 |
| Within Consultancy Limited | Professional & scientific | 2017 |
| Withus.Co.Uk Limited | Professional & scientific | 2000 |
| WJ Mcgregor Consulting Ltd | Professional & scientific | 2026 |
| WK Asset Management Limited | Real estate | 2024 |
| Wldshk Iugol Ltd | Wholesale & retail | 2025 |
| Wles Limited | Professional & scientific | 2002 |
| Wltd Ltd | Professional & scientific | 2023 |
| WM Trading Ltd | Information & communication | 2013 |
| WMR Partners Limited | Wholesale & retail | 2021 |
| Wo-Da Trans Ltd | Transport & logistics | 2014 |
| Wogye DEN Ltd | Information & communication | 2025 |
| WOK2VEGAN Limited | Hospitality | 2023 |
| Wolfhampcote Farms Limited | Agriculture & fishing | 1945 |
| Wood Abbey Capital Limited | Real estate | 2025 |
| Wood Abbey Investment Limited | Real estate | 2022 |
| Wood Abbey Ltd | Construction | 2019 |
| Wood Side Service Centre Limited | Wholesale & retail | 2019 |
| Wood View Partners Ltd | Professional & scientific | 2026 |
| WOOD2U Limited | Wholesale & retail | 2010 |
| Woodfield Property Ventures Ltd | Real estate | 2024 |
| Woodflakes of Daventry Limited | Water & waste | 1984 |
| Woodfloor Trade Supplies Ltd | Extraterritorial | 2012 |
| Woodgrayne Limited | Manufacturing | 2012 |
| Woodlands Garage (Rugby) Limited | Wholesale & retail | 2024 |
| Woodlands Investment Holdings | Financial services | 2021 |
| Woodlands Service Station Limited | Wholesale & retail | 2014 |
| Woods Paving & Landscaping Ltd | Professional & scientific | 2026 |
| Woodside Motor Services Limited | Wholesale & retail | 2019 |
| Woodward Properties Ltd | Real estate | 2024 |
| Woody Management Limited | Extraterritorial | 2010 |
| Woof Books UK Ltd | Information & communication | 2025 |
| Work Support Ltd | Administrative & support | 2001 |
| World Class Speakers Academy Ltd | Education | 2012 |
| World Electrics Ltd | Wholesale & retail | 2021 |
| World of Windows Facias & Conservatories Ltd. | Construction | 2005 |
| Worster Electrical Ltd | Construction | 2021 |
| Worthy Associates Ltd | Professional & scientific | 2005 |
| Wrap Street Ltd | Wholesale & retail | 2018 |
| Wren Transport Limited | Transport & logistics | 2014 |
| Wrightlock Ltd | Real estate | 2026 |
| Writer Information UK Private Limited | Financial services | 2017 |
| WS 88 Transport Ltd | Transport & logistics | 2019 |
| WSF Holdings Ltd | Real estate | 2017 |
| WTI Mobility UK Ltd | Administrative & support | 2024 |
| Wufeiyang Limited | Wholesale & retail | 2025 |
| Wwtrans 92 Ltd | Transport & logistics | 2022 |
| WWX Investment Ltd | Financial services | 2025 |
| Wyke & Humber Ltd | Wholesale & retail | 2009 |
| Wyndham Investments Limited | Construction | 1955 |