| WHS Plastics Pickering Ltd | Manufacturing | 2015 |
| WHS Plastics Stamford Bridge Ltd | Real estate | 2015 |
| Wil-Songs Ltd | Information & communication | 2024 |
| Wilf Ward Independent Living Ltd | Hospitality | 2015 |
| William Seymour Ltd | Manufacturing | 2025 |
| Windcare Holdings Limited | Financial services | 2016 |
| Windcare Limited | Manufacturing | 2011 |
| Windsports Centre Limited | Wholesale & retail | 1984 |
| Wiseman Talent Solutions Limited | Administrative & support | 2010 |
| Woodhaven I.T. Service and Support Ltd | Information & communication | 2021 |
| Work Leisure Life Limited | Construction | 2013 |
| WOS Projects Limited | Construction | 2026 |
| Wright Fire Safety Limited | Professional & scientific | 2011 |
| Yazproperofferventures Limited | Real estate | 2025 |
| York Authors' Coffee Shop Limited | Information & communication | 2015 |
| Yorkshire Rural Living Limited | Construction | 2016 |
| Your Ryedale Care Limited | Health & social care | 2021 |
| Yoxall Interiors (Pickering) Limited | Wholesale & retail | 2009 |
| YU Xiang 1115 Limited | Hospitality | 2023 |
| Z C Trade Co. Ltd | Wholesale & retail | 2020 |
| Zarafa Fall Protection Limited | Professional & scientific | 2022 |
| Zarafa Holdco Limited | Financial services | 2024 |
| Zarafa Holdings Limited | Professional & scientific | 2015 |
| Zarafa Hungate Limited | Professional & scientific | 2012 |
| Zarafa Limited | Manufacturing | 2008 |
| Zeigen Ltd | Wholesale & retail | 2024 |
| Zest Cafe and Takeaway Ltd | Hospitality | 2021 |