| Wilbo Engineering Limited | Construction | 2018 |
| Wild Root Limited | Hospitality | 2020 |
| Wilde Property Maintenance Ltd | Construction | 2020 |
| Wildflower (NW) Ltd | Wholesale & retail | 2025 |
| Wilkins Enterprises Limited | Other services | 2015 |
| Wilkinson & Gaviller Limited | Wholesale & retail | 2007 |
| Willetts & Co Solicitors Limited | Professional & scientific | 2019 |
| William Evermore Ltd | Hospitality | 2024 |
| William Hayes Investments Ltd | Financial services | 2023 |
| William Jones & Partners Ltd | Professional & scientific | 2008 |
| William MAY (Manchester) Limited | Extraterritorial | 1914 |
| Williams & Co Accountancy Ltd | Professional & scientific | 2011 |
| Williams & Co Accountants (North West) Ltd | Professional & scientific | 2024 |
| Williams & Co Legal Division Ltd | Professional & scientific | 2013 |
| Williams & Co. Construction Ltd | Construction | 2016 |
| Williams Property Consultants Ltd | Real estate | 2010 |
| Willow Green Estates Limited | Real estate | 2025 |
| Willow House Care Limited | Health & social care | 2016 |
| Willow Park Flat Management (Southport) Limited | Households | 2006 |
| Willowbank Flat Management (Southport) Limited | Households | 1987 |
| Willows Nursing Home Limited | Health & social care | 1993 |
| Willowtown Services Ltd | Information & communication | 2011 |
| Wilman Holdings Limited | Financial services | 2023 |
| Wilson Autobodies Limited | Wholesale & retail | 2012 |
| Wilson Barnes Ltd | Real estate | 2025 |
| Wilson Family Holdings Ltd | Real estate | 2020 |
| Wilson Roofing and Property Services Ltd | Construction | 2025 |
| Wilson Wheel Care NW Ltd | Manufacturing | 2024 |
| Winacre Brow Farm Limited | Agriculture & fishing | 2011 |
| Windowcare (North West) Limited | Construction | 2006 |
| Windrunner Estates Limited | Real estate | 2015 |
| Windscreen Plus Limited | Wholesale & retail | 2026 |
| Windsor Maintenance Committee (Southport) Limited | Households | 2001 |
| Windtex Engineering Limited | Professional & scientific | 2014 |
| Wine Bitch Moan Ltd | Wholesale & retail | 2022 |
| Winnie’S Boutique Ltd | Wholesale & retail | 2020 |
| Winshaw Corporate Solutions Limited | Financial services | 2014 |
| Winsoc Digital Ltd | Professional & scientific | 2017 |
| Winsoc Digital Solutions Limited | Professional & scientific | 2023 |
| Winsor Convenience Store Ltd | Wholesale & retail | 2026 |
| Winspear Garth Senior Care Limited | Health & social care | 2012 |
| Winswood Limited | Construction | 2018 |
| Wintercorn Consulting Limited | Information & communication | 2008 |
| Winterfell Properties Limited | Real estate | 2017 |
| Winterhill Consultancy Services Limited | Information & communication | 2022 |
| Witan Management Limited | Households | 1973 |
| WJ and J Ltd | Hospitality | 2024 |
| Wjsw Suppliers Ltd | Wholesale & retail | 2026 |
| WLC Estates Ltd | Real estate | 2021 |
| WLC Online Ltd | Administrative & support | 2018 |
| Wmfp Limited | Wholesale & retail | 2020 |
| WMS Invest Limited | Real estate | 2024 |
| Wolfenden Badminton Academy Ltd | Arts & recreation | 2025 |
| Wolff Media Ltd | Information & communication | 2019 |
| Wolfgang Wynne Ltd | Real estate | 2025 |
| Woodbourne Management Company Limited | Real estate | 1987 |
| Woodlea Equestrian Ltd | Agriculture & fishing | 2024 |
| Woodmoss Trading UK Limited | Wholesale & retail | 2013 |
| Woodside Property Development Limited | Real estate | 2018 |
| Woodvale and Ainsdale Community Association | Arts & recreation | 2011 |
| Woody Bear Productions Limited | Professional & scientific | 2004 |
| Woof and Bark Ltd | Wholesale & retail | 2023 |
| Worcester Lodge (Southport) Management Company Limited | Households | 2016 |
| Worksharp (Properties) Limited | Real estate | 1998 |
| World Bargains Limited | Other services | 2015 |
| World Diamonds Limited | | 1997 |
| World Wide Cars Ltd | Wholesale & retail | 2024 |
| Worldwide L.R. Ltd | Wholesale & retail | 2006 |
| Worsley Clay Sports Club Limited | Arts & recreation | 2000 |
| Worthington's Farm Ltd | Agriculture & fishing | 2017 |
| Worthy Enterprises Ltd | Wholesale & retail | 2012 |
| WOW Brows Ltd | Other services | 2023 |
| WPI Limited | Real estate | 2015 |
| Wright Attire Ltd | Wholesale & retail | 2025 |
| Wrightguard Security Systems Ltd | Manufacturing | 2026 |
| Wrightmotorsouthport Ltd | Wholesale & retail | 2022 |
| Wrightson & King Ltd | Construction | 2009 |
| Wright’S Landscape Services Limited | Administrative & support | 2015 |
| WSE Ltd | Other services | 2014 |
| WTH Consultancy Ltd | Professional & scientific | 2026 |
| WTL4 Limited | Hospitality | 2024 |
| Wundrr Ltd | Information & communication | 2026 |
| WVD Properties Ltd | Households | 2020 |
| WXC 888 Limited | Hospitality | 2025 |
| Wyke Boat Storage Ltd | Real estate | 2021 |
| Wynne-Williams (Flint) Limited | Extraterritorial | 1988 |
| Wynyard Concierge Services Limited | Administrative & support | 2005 |
| X7 Portfolio Ltd | Real estate | 2020 |
| Xbuilders Ltd | Construction | 2026 |
| Xceed HR Services Ltd | Professional & scientific | 2017 |
| Xingwang Southport Ltd | Hospitality | 2023 |
| XP Litigation Ltd | Administrative & support | 2019 |
| Xpnd Ltd. | Administrative & support | 2023 |
| XY Leisure Facilities Ltd | Transport & logistics | 2019 |
| Yamooni Limited | Health & social care | 2023 |
| Yank Tanx Limited | Wholesale & retail | 2013 |
| Yarek Ltd | Other services | 2018 |
| Yass Films Limited | Information & communication | 2020 |
| Yates Greer Limited | Wholesale & retail | 1963 |
| Yates Motor Engineers Limited | Wholesale & retail | 2008 |