| Waxman Battery Storage Limited | Wholesale & retail | 2019 |
| Waxman Commercial Projects Limited | Wholesale & retail | 2021 |
| Waxman Energy Solutions Limited | Professional & scientific | 2010 |
| Waxman Group Holdings Limited | Financial services | 2018 |
| Waxman Group Limited | Transport & logistics | 1997 |
| WB Nord Limited | Wholesale & retail | 1986 |
| Weir Scaffolding Limited | Construction | 2022 |
| Well Being Developments Limited | Real estate | 2012 |
| Wellgreen Outdoor Sauna Ltd | Health & social care | 2025 |
| Wellington Point (Halifax) Management Company Limited | Households | 2007 |
| West Lancs Brickwork Contractors Ltd | Construction | 2009 |
| West Riding Leisure Limited | Manufacturing | 2010 |
| West Vale Engineering Co. Limited | Professional & scientific | 1974 |
| West Vale Engineering Products Limited | Real estate | 1980 |
| West View (Mexborough) Management Company Limited | Households | 2006 |
| West Yorkshire Hand & Wrist Surgery Limited | Health & social care | 2019 |
| Westfield Properties Commercial Limited | Real estate | 2016 |
| Westgate 1962 Limited | Extraterritorial | 2014 |
| Westgrove Services Limited | Real estate | 1993 |
| Wg&S Limited | Professional & scientific | 2008 |
| Wheaterspoons Limited | Hospitality | 2021 |
| Whitwell Drive 1964 Limited | Extraterritorial | 2014 |
| Wilbar Development Company Limited | Construction | 2005 |
| Wildax Conversions Limited | Manufacturing | 2006 |
| Wildcard One Ltd | Hospitality | 2019 |
| Wilf Engineering Limited | Manufacturing | 2018 |
| William Faye Limited | Financial services | 2007 |
| Wilson Briggs & Sons Limited | Real estate | 1947 |
| Wilson Ellis Limited | Construction | 2011 |
| Wilts Fire Extinguisher Service Limited | Manufacturing | 1992 |
| Wince Brook Court Management Co Limited | Households | 2007 |
| Winchester Court (Boothtown) Property Management Limited | Households | 2008 |
| Windermere Court (Leigh) Management RTM Company Limited | Households | 2007 |
| Winderson Limited | Real estate | 2022 |
| Wolfstar Limited | Professional & scientific | 2007 |
| Woodcroft Grange Management Limited | Households | 2004 |
| Woodfield Car Sales Ltd. | Wholesale & retail | 2016 |
| Woodhall Park Limited | Extraterritorial | 1990 |
| Woodhouse Group Limited | Administrative & support | 1998 |
| Woodhouse Mill Management Company Limited | Households | 2003 |
| Woodhouse UK Limited | Manufacturing | 1987 |
| Woodlands (Meltham) Limited | Households | 2000 |
| Woodman Cafe Ltd | Hospitality | 2024 |
| Woodwin Limited | Wholesale & retail | 2025 |
| Woolston Grange Management Company Limited | Administrative & support | 2008 |
| Woolton Mews RTM Company Limited | Households | 2012 |
| Words & Wishes Ltd | Wholesale & retail | 2024 |
| Workvans.Com Ltd | Professional & scientific | 2024 |
| Wren Corporate Finance Limited | Financial services | 1985 |
| Wsgmm Investments Limited | Financial services | 2026 |
| Wyvern Access Ltd | Construction | 2023 |
| X Fire Solutions Limited | Construction | 2024 |
| XI Hair Limited | Other services | 2018 |
| Xpress Coatings Ltd | Professional & scientific | 2022 |
| Xtron Systems Limited | Manufacturing | 2009 |
| Yazmar Indian Brewing Co Limited | Wholesale & retail | 2013 |
| Yoo's Enterprise Ltd | Wholesale & retail | 2025 |
| Yorkshire Air Ambulance (Trading) Limited | Arts & recreation | 2000 |
| Yorkshire Air Ambulance Limited | Health & social care | 2000 |
| Yorkshire Air Ambulance Services Ltd | Health & social care | 2005 |
| Yorkshire Building & Architectural Services Limited | Construction | 2013 |
| Yorkshire CAD Services Limited | Professional & scientific | 2018 |
| Yorkshire Rose Camper Conversions Limited | Wholesale & retail | 2018 |
| Yorkshire Service Engineer Limited | Professional & scientific | 2025 |
| Yorkshire Stoves and Flues Ltd | Wholesale & retail | 2019 |
| YOU CAN Ltd | Health & social care | 2025 |
| Yscoldco 2025 Limited | Health & social care | 2010 |
| YT68 Properties Ltd | Real estate | 2025 |
| Z a & Sons Limited | Hospitality | 2025 |
| Zafron Foods Limited | Manufacturing | 2007 |
| Zahish Consultancy Limited | Professional & scientific | 2019 |
| Zaraks NW Ltd | Hospitality | 2020 |