| West Yorkshire Autos Ltd | Wholesale & retail | 2019 |
| West Yorkshire Building Services Limited | Construction | 2025 |
| Westbuild (Doncaster) Limited | Construction | 2010 |
| Westbuild Holdings Limited | Financial services | 2014 |
| Westbuild Piling Limited | Construction | 2017 |
| Westbuild Properties Ltd | Construction | 2019 |
| Westerman Builders Limited | Construction | 2026 |
| WG Secure Advisory Ltd | Wholesale & retail | 2026 |
| WGH International Limited | Arts & recreation | 2002 |
| WHC Group Holdings Limited | Financial services | 2021 |
| Wheelo Ltd | Transport & logistics | 2026 |
| Whelan Construction Limited | Construction | 1999 |
| Whisk IT Ltd | Hospitality | 2025 |
| Whisky Snug Limited | Wholesale & retail | 2025 |
| Whitkirk Kidz Club Co-Operative Ltd | Health & social care | 2006 |
| Whitkirk Kidz Club Ltd | Extraterritorial | 2018 |
| Whitwood Cafe Diner Limited | Hospitality | 2012 |
| Whitwood Park Management Company Limited | Real estate | 2013 |
| Whitworth Fabrications Ltd | Manufacturing | 2023 |
| Wild and Wood UK Ltd | Wholesale & retail | 2020 |
| Wild DEN Ltd | Health & social care | 2025 |
| Wildridge Properties Limited | Real estate | 2021 |
| Will Dale Developments Limited | Construction | 2021 |
| William Jude Project Management Ltd | Construction | 2018 |
| Willow Lane East Property Management Company Limited | Households | 2011 |
| WILLS4U (Document Storage) Ltd | Professional & scientific | 2003 |
| Wilson Browes Limited | Administrative & support | 2016 |
| Wilson Fixed Abodes Ltd | Real estate | 2024 |
| Wilson's Steel Buildings Limited | Construction | 2024 |
| Win-Mari Pipework Ltd | Professional & scientific | 2020 |
| Window Fixer Yorkshire Limited | Construction | 2022 |
| Wise Way Homes Ltd | Real estate | 2025 |
| Wishell Property Ltd | Real estate | 2023 |
| With Women CIC | Other services | 2024 |
| Witt Properties Ltd | Real estate | 2024 |
| Wlsit Limited | Information & communication | 2021 |
| Wmak Ltd | Wholesale & retail | 2026 |
| Wntai Services Limited | Professional & scientific | 2018 |
| Wojnicz Transport Ltd | Transport & logistics | 2016 |
| Wok&Bun Hemsworth Ltd | Hospitality | 2023 |
| Wood's Packaging Limited | Wholesale & retail | 2005 |
| Woodhouse Lodge Limited | Wholesale & retail | 2002 |
| Woodlands House Management (Pontefract) Limited | Households | 1988 |
| Woods Solicitors (West Yorkshire) LLP | | 2013 |
| Woods Test Automation Solutions Ltd | Information & communication | 2023 |
| Woodstock Timber Yard Limited | Manufacturing | 2014 |
| Woodys Vans Limited | Wholesale & retail | 2016 |
| Wooke Limited | Real estate | 2026 |
| Woolford Properties Portfolio Builder Ltd | Administrative & support | 2024 |
| Words on Stuff Ltd | Wholesale & retail | 2023 |
| Work Space Shop Ltd | Education | 2019 |
| Workforce Agencies Limited | Wholesale & retail | 2011 |
| Worth Alcohol Beverages Entertainment Limited | Hospitality | 2026 |
| Wray Accountancy Services Ltd | Professional & scientific | 2025 |
| Wright & Co (Pontefract) Limited | Professional & scientific | 2010 |
| Wrights News Ltd | Wholesale & retail | 2025 |
| Wylde Green Investments Limited | Real estate | 2023 |
| WYN Design Limited | Professional & scientific | 2015 |
| Wyng Properties Ltd | Wholesale & retail | 2019 |
| Wynnsalesandlettings Ltd | Real estate | 2024 |
| Wyrd Hill Ltd | Hospitality | 2025 |
| Wytek Electrical Contractors Limited | Construction | 2017 |
| Wytek Electrical Limited | Construction | 2022 |
| X-Wray Training Ltd | Health & social care | 2012 |
| X2020 Ltd | Information & communication | 2024 |
| X9 Security Solutions Ltd | Administrative & support | 2024 |
| Xaris Company Books Limited | Professional & scientific | 2009 |
| Xterminate Limited | Extraterritorial | 2016 |
| Xtractaduct Ltd | Construction | 2021 |
| Xtrafreshhh Cleaning Services Ltd | Administrative & support | 2021 |
| Y C Construction Ltd | Construction | 2020 |
| Yalson Commercial Consultancy Limited | Professional & scientific | 2018 |
| YC Construction & Landscaping Ltd | Construction | 2025 |
| Ycsa Yorkshire Construction & Security Academy Limited | Construction | 2022 |
| Ycwh Ltd | Transport & logistics | 2025 |
| YDP Property Limited | Real estate | 1997 |
| YLE Solutions Limited | Manufacturing | 2025 |
| Yonder Events Limited | Arts & recreation | 2022 |
| Yorkshire Apartments Ltd | Financial services | 2016 |
| Yorkshire Bullion Limited | Wholesale & retail | 2014 |
| Yorkshire Civils Limited | Construction | 2021 |
| Yorkshire Coach Driver Ltd | Transport & logistics | 2022 |
| Yorkshire Commercial Assist Ltd | Professional & scientific | 2020 |
| Yorkshire Commercial Garages Limited | Extraterritorial | 2014 |
| Yorkshire Connections Limited | Other services | 2014 |
| Yorkshire Diesel Power Limited | Manufacturing | 1996 |
| Yorkshire Drone Pilots Ltd | Information & communication | 2025 |
| Yorkshire Endometriosis Ltd | Health & social care | 2023 |
| Yorkshire Folk Ltd | Information & communication | 2019 |
| Yorkshire Garden Rooms Limited | Construction | 2018 |
| Yorkshire Garlic Spread Ltd | Manufacturing | 2026 |
| Yorkshire Health and Sport Limited | Education | 2017 |
| Yorkshire House Clearance Ltd | Transport & logistics | 2019 |
| Yorkshire Household Services Ltd | Households | 2020 |
| Yorkshire MA Ltd | Arts & recreation | 2024 |
| Yorkshire Real Estate Group Holdings Limited | Professional & scientific | 2023 |
| Yorkshire Real Estate Group Limited | Real estate | 2020 |
| Yorkshire Saddlery Repairs Limited | Manufacturing | 2015 |
| Yorkshire Steam Events Ltd | Arts & recreation | 2026 |
| Yorkshire Tuition Limited | Education | 2019 |