| W.I.L.L. Wirral Independent Living and Learning | Health & social care | 1999 |
| Wala Investment Company | Financial services | 2021 |
| Waldron Construction North West Limited | Construction | 2013 |
| Wallasey Motor Cycles Limited | Wholesale & retail | 1996 |
| Wapping Beers Limited | Real estate | 2003 |
| Ward's Fish Limited | Wholesale & retail | 2008 |
| Wardcost Limited | Other services | 2020 |
| Wardrobe Works Ltd | Administrative & support | 2023 |
| Warehouse and Commercial Properties Limited | Real estate | 2023 |
| Warlow Technologies Limited | Professional & scientific | 1993 |
| Warren Holmes Limited | Construction | 2018 |
| Waterford Group Management & Security Alliance (Delamere) RTM Company Limited | Households | 2024 |
| Waterford Group Management & Security Alliance (Heathfield) Management Company Limited | Households | 1992 |
| Waterford Group Management & Security Alliance (Lawrence) RTM Company Limited | Households | 2020 |
| Waterford Group Management & Security Alliance (Stockswell) Management Company Limited | Real estate | 2008 |
| Waterford Group Management & Security Alliance (Upton Rocks) RTM Company Limited | Real estate | 2010 |
| Waterford L&P Limited | Administrative & support | 2025 |
| Waterfront Pubs Ltd | Hospitality | 2015 |
| Watts Consulting Ltd | Health & social care | 2021 |
| Wavertree SH Investments Ltd | Real estate | 2024 |
| Wavewarrior Limited | Professional & scientific | 2016 |
| Wayvik Limited | Wholesale & retail | 1993 |
| WCL Freehold Limited | Households | 2024 |
| WE Move Recruitment & Training Ltd | Administrative & support | 2024 |
| Wealstone (Holdings) Limited | Financial services | 2017 |
| Wealstone Limited | Households | 2002 |
| Weapons Down Wirral CIC | Education | 2024 |
| Web Social Enterprises Limited | Health & social care | 2008 |
| Weblocum Ltd | Extraterritorial | 2007 |
| Webthinking Ltd | Information & communication | 2002 |
| Weinronk Pharmacies Limited | Wholesale & retail | 2012 |
| Wellbeing Coach Alliance Ltd | Administrative & support | 2023 |
| Welliac Investment Company | Financial services | 2022 |
| Wellness HQ Limited | Health & social care | 2021 |
| Werk Solutions Ltd | Manufacturing | 2022 |
| Wespa Limited | Arts & recreation | 2015 |
| West 32 Ltd | Other services | 2018 |
| West Alfred Court Management Company Limited | Households | 2002 |
| West Wirral Security Ltd | Administrative & support | 2020 |
| Westbrooke Property Solutions Ltd | Real estate | 2023 |
| WG Asian Fusion Ltd | Hospitality | 2024 |
| Wheel Deal Wirral Ltd | Wholesale & retail | 2017 |
| Which Item Technology Limited | Information & communication | 2010 |
| Whiston Sewing Shop Ltd | Wholesale & retail | 2025 |
| White Aura Official UK CIC | Health & social care | 2024 |
| White Phoenix Events Ltd | Other services | 2020 |
| Whitefields Apparel Ltd | Wholesale & retail | 2012 |
| Whitefire Business Solutions Limited | Information & communication | 2011 |
| Whites Health Ltd | Health & social care | 2020 |
| Whitesmith Limited | Manufacturing | 1961 |
| Wholesale Trade Supplies Ltd | Wholesale & retail | 2022 |
| Wild & Green Ltd | Arts & recreation | 2019 |
| Wild Beast Gardening Ltd | Administrative & support | 2018 |
| Williams Bespoke Joinery Manufacturers Ltd | Manufacturing | 2024 |
| Williams Electrical Ltd | Construction | 2019 |
| Willow Court Estates Limited | Construction | 2013 |
| Willow Properties (Formby) Limited | Real estate | 2015 |
| Willow Sands Resident Management Company Limited | Other services | 2020 |
| Willow Tree Nationwide Ltd | Professional & scientific | 2025 |
| Wine Cellar Hoylake Ltd | Wholesale & retail | 2024 |
| Wine Managment Holdings Limited | Real estate | 2016 |
| Wirral Aesthetics Limited | Other services | 2008 |
| Wirral AGE Concern Trading Limited | Extraterritorial | 1994 |
| Wirral Air Conditioning Ltd | Construction | 2025 |
| Wirral and Chester Riding for the Disabled | Other services | 2003 |
| Wirral Awards Limited | Wholesale & retail | 2025 |
| Wirral Bargains Ltd | Wholesale & retail | 2026 |
| Wirral Best Shawarma Ltd | Hospitality | 2026 |
| Wirral Car Breakdown Ltd. | Wholesale & retail | 2019 |
| Wirral Car Solutions Ltd | Administrative & support | 2019 |
| Wirral Cash and Carry Ltd | Wholesale & retail | 2020 |
| Wirral Chamber of Commerce and Industry | Administrative & support | 1912 |
| Wirral Change Limited | Other services | 2006 |
| Wirral Christian Centre | Other services | 2001 |
| Wirral Churches' ARK Project | Hospitality | 1999 |
| Wirral Citizens Advice Bureau Limited | Information & communication | 2004 |
| Wirral Coast Ceramics Ltd | Wholesale & retail | 2009 |
| Wirral Double Glazing Ltd | Construction | 2025 |
| Wirral Drainage Limited | Water & waste | 2008 |
| Wirral Electrics Ltd | Construction | 2022 |
| Wirral Facilities Management Limited | Information & communication | 2024 |
| Wirral Fireworks Ltd | Other services | 2025 |
| Wirral GAS Limited | Construction | 2024 |
| Wirral Golf Club Limited | Arts & recreation | 1928 |
| Wirral Health and Wellbeing CIC | Information & communication | 2017 |
| Wirral Health Project CIC | Health & social care | 2020 |
| Wirral Information Resource for Equality and Diversity Limited | Other services | 1994 |
| Wirral Installations Limited | Information & communication | 2004 |
| Wirral Kebab CH42 Ltd | Hospitality | 2026 |
| Wirral Lettings and Property Management Limited | Real estate | 2020 |
| Wirral Malayalee Community CIC | Health & social care | 2025 |
| Wirral Marine Refrigeration Services Ltd | Professional & scientific | 2023 |
| Wirral Mencap | Health & social care | 2013 |
| Wirral Menopause Community CIC | Health & social care | 2022 |
| Wirral Mobility Ltd | Wholesale & retail | 2012 |
| Wirral Multicultural Organisation | Education | 1993 |
| Wirral Partnership Homes (Building Services) Limited | Construction | 2004 |
| Wirral Partnership Homes (Developments) Limited | Construction | 2011 |
| Wirral Phoenix Community C.I.C. | Education | 2022 |
| Wirral Primary Care Collaborative Limited | Health & social care | 2022 |