| Wolf Web Design Ltd. | Professional & scientific | 2019 |
| Wolff Storage Ltd | Transport & logistics | 2025 |
| Wonderful Takeaway 150 Ltd | Hospitality | 2025 |
| Wonderful Takeaway 1997 Ltd | Hospitality | 2021 |
| Woodman Group Limited | Administrative & support | 2022 |
| Woofables Limited | Manufacturing | 2025 |
| Worcestershire Energy Partnerships Limited | Professional & scientific | 2020 |
| Working Platforms Ltd | Construction | 2023 |
| Workwise Sports Limited | Education | 2025 |
| Wrap Styl Limited | Professional & scientific | 2023 |
| Wrekin Technologies Limited | Other services | 2012 |
| Wright's Tackleshack Ltd | Wholesale & retail | 2024 |
| Wwassp Limited | Health & social care | 2020 |
| WY Construction & Civil Engineering Limited | Construction | 2025 |
| Xander Capital Ltd | Financial services | 2022 |
| Xander Finance Ltd | Professional & scientific | 2022 |
| Xander Group Holdings Limited | Financial services | 2021 |
| Xander Property Holdings Ltd | Real estate | 2022 |
| Xander Wealth Ltd | Financial services | 2017 |
| Xbite Ltd | Wholesale & retail | 2021 |
| Xrpower Limited | Construction | 2024 |
| Y&Z Barbering Ltd | Other services | 2022 |
| YB Components Limited | Wholesale & retail | 2007 |
| YEX Ltd | Wholesale & retail | 2012 |
| YLS (Yorkshire) Limited | Construction | 2025 |
| Yorkshire Building Maintenance Services Ltd | Administrative & support | 2016 |
| Yorkshire Energy Partnership Limited | Professional & scientific | 2020 |
| Yorkshire Home Lets Ltd | Real estate | 2016 |
| Yorkshire Lawn Care Limited | Administrative & support | 2020 |
| Yorkshire Lawn Treatments Ltd | Administrative & support | 2020 |
| Yorkshire Mentoring CIC | Education | 2007 |
| Yorkshire Netting & Scaffolding Limited | Construction | 2014 |
| Yorkshire Pooches Therapies Ltd | Professional & scientific | 2024 |
| Yorkshire Power Projects Limited | Professional & scientific | 2025 |
| Yorkshire Refrigeration Services Ltd | Construction | 2021 |
| Yorkshire Security Solutions Ltd | Administrative & support | 2025 |
| Yorkshire Shutters and Blinds Limited | Households | 2017 |
| Yorkshire Strength Ltd | Arts & recreation | 2019 |
| Yorkshire Tipper Hire Limited | Transport & logistics | 2025 |
| Yorkshire Trade Windows Limited | Manufacturing | 1997 |
| Yorkshire Wardrobes Ltd | Extraterritorial | 2011 |
| Yorkshire Wellness Co. Ltd | Manufacturing | 2025 |
| Yorkshire Windows Direct Limited | Wholesale & retail | 1997 |
| Your Property Services (Yorkshire) L.P. | | 2019 |
| YRS Retail Ltd | Wholesale & retail | 2020 |
| Zabka Castleford Ltd | Wholesale & retail | 2022 |
| Zbest Carwash Ltd | Administrative & support | 2025 |
| Zee's Pizza (Castleford) Limited | Hospitality | 2024 |
| Zee's Pizza Ltd | Hospitality | 2021 |
| ZEN Medical Aesthetics Limited | Health & social care | 2023 |
| Zheko Cutz Ltd | Other services | 2025 |
| Ziggy MAX Ltd | Transport & logistics | 2018 |