| Waste Electrical and Electronic Equipment (Weee) Limited | Extraterritorial | 2002 |
| Waste Management Transport Ltd | Water & waste | 2025 |
| Water and Warmth (North West) Ltd | Construction | 2002 |
| Water Cost Savers Ltd | Professional & scientific | 2003 |
| Waterer Dental Care Limited | Health & social care | 2009 |
| Waters Meeting Management Limited | Real estate | 2005 |
| Weatherwise Windows Limited | Construction | 2003 |
| Weavers Triangle Trust | Arts & recreation | 1993 |
| Webbplace Limited | Real estate | 2000 |
| Webskape Limited | Administrative & support | 2007 |
| Weir Community Partnership | Arts & recreation | 2005 |
| Weir Minerals Europe Limited | Manufacturing | 1903 |
| Weir Street Light Engineering Company Limited | Manufacturing | 1958 |
| Weir Warman (U.K.) Limited | Professional & scientific | 1982 |
| WELLBEING4BUSINESS Limited | Arts & recreation | 2005 |
| Wellington Rubber Company Limited | Manufacturing | 1937 |
| Wellway Properties Ltd | Extraterritorial | 1998 |
| Welsby Design Services Limited | Administrative & support | 1977 |
| Wesley Properties (Northern) Limited | Real estate | 2003 |
| West Jewellers Limited | Wholesale & retail | 2003 |
| West Lancashire Forklift Company Limited | Administrative & support | 2007 |
| West View Surveying and Estimating LP | | 2017 |
| Westby Park Properties Limited | Real estate | 1965 |
| Westcliffe Homes Limited | Other services | 1988 |
| Westerhope Flooring Ltd | Construction | 2016 |
| Westernoption Limited | | 1993 |
| Westlands House Ltd | Information & communication | 1994 |
| Westwise Property Services Limited | Real estate | 1997 |
| Whalley Corn Mills Ltd. | Agriculture & fishing | 2003 |
| Whalley Finance Limited | Extraterritorial | 1964 |
| Wheels Auto Parts Limited | Wholesale & retail | 1995 |
| White's Creamery Limited | Extraterritorial | 1958 |
| Whitecroft Lighting Limited | Manufacturing | 1999 |
| Whitefield Property Management Limited | Households | 2004 |
| Whitefield Services Limited | Wholesale & retail | 2001 |
| Whitham Kelvin Ltd | Wholesale & retail | 2025 |
| Whitlock Heating Company,Limited(The) | | 1949 |
| Whittakers of Blackpool Limited | Construction | 2002 |
| Whittle Flooring Company Limited | Manufacturing | 1963 |
| WHT Holdings Limited | Professional & scientific | 2007 |
| Widefell Properties Ltd | Extraterritorial | 2000 |
| Wigan Storage Company Limited | Transport & logistics | 1985 |
| Wildready Limited | Other services | 1980 |
| Wilkinson Pharmacy Limited | Wholesale & retail | 2006 |
| Wilkinsons Hi-Fi Limited | Wholesale & retail | 2003 |
| William Thompson & Sons | | 2001 |
| Williams Plant Services Limited | Construction | 2002 |
| Willowbrook (Hyndburn) Limited | Health & social care | 2003 |
| Willy Banjo Limited | Wholesale & retail | 2003 |
| Wilsea Services Limited | Other services | 2002 |
| Wilsons Timber Co & Manufacturing Joiners Limited | Wholesale & retail | 1986 |
| Wilvere Court (Blackpool) Association Limited | Administrative & support | 1973 |
| Windermere Boat Sales Limited | Extraterritorial | 1956 |
| Windle & Bowker Financial Solutions Limited | Financial services | 2006 |
| Windmill Green Limited | Financial services | 2017 |
| Window & Cladding Trade Centre Limited | Construction | 1997 |
| Windows & Conservatories by Mastercraft Limited | Construction | 2000 |
| Winward Construction Limited | | 1978 |
| Wizards Keep Limited | Information & communication | 2005 |
| WJ Parkinson & SON Limited | Construction | 2003 |
| Wolf Computers Limited | Information & communication | 1999 |
| Wolstenholme Properties Limited | Manufacturing | 1980 |
| Woodburn & Spence Limited | Real estate | 1933 |
| Woodend Properties (Northern) Ltd. | Real estate | 2000 |
| Woodfell Pallets Limited | | 1978 |
| Workgreat Limited | Construction | 1986 |
| World Class Project Management Limited | Professional & scientific | 1998 |
| World of Brass Limited | Wholesale & retail | 2003 |
| World-Force Ltd | Information & communication | 1998 |
| Worldwide Procurement Services Ltd | Wholesale & retail | 2003 |
| Worrall High Ltd | Wholesale & retail | 2025 |
| Worston Close Management Limited | Households | 2000 |
| Wyre Building Supplies Limited | Wholesale & retail | 2002 |
| Wyre Funeral Services Limited | Other services | 2004 |
| Wyreside Developments Limited | Real estate | 2004 |
| XEL Assessments Ltd | Administrative & support | 2004 |
| XEL Training & Development Ltd | Administrative & support | 1996 |
| Y2P Properties Ltd | Real estate | 2023 |
| Yearsley CS Limited | Extraterritorial | 2006 |
| Yisen Horse Limited | Wholesale & retail | 2026 |
| YO Courier Limited | Transport & logistics | 2025 |
| YO Foods Limited | Wholesale & retail | 2014 |
| YO Services 360 Ltd | Administrative & support | 2025 |
| Yorkshire-Homes.Co.Uk Limited | Professional & scientific | 2001 |
| Z H Petroleum Ltd | Construction | 2026 |
| Zealot UK Limited | Information & communication | 2002 |
| Zebsys Limited | Manufacturing | 2001 |
| Zxdigital Ltd | Information & communication | 2006 |