| Whites Property Holdings Limited | Extraterritorial | 2022 |
| Whites Restaurant Limited | Hospitality | 2008 |
| Whitestones Group Limited | Real estate | 2021 |
| Wicstun Travel Ltd | Administrative & support | 2025 |
| Wilberforce Consulting Ltd | Professional & scientific | 2019 |
| Wilberforce Developments (Beverley) Limited | Construction | 2020 |
| Wilberforce Holiday Lets Limited | Hospitality | 2023 |
| Wild Intervention Ltd | Health & social care | 2020 |
| Wild Opportunities CIC | Health & social care | 2023 |
| Wild Properties (Hull) Ltd | Real estate | 2021 |
| Wild Staffing & Events Ltd | Administrative & support | 2023 |
| Wilkinson Nominees Limited | Financial services | 2021 |
| Willbuild (UK) Limited | Construction | 2009 |
| Willhen Properties Ltd | Real estate | 2022 |
| William Christopher Limited | Construction | 2017 |
| William Varah (Transport) Limited | Real estate | 1960 |
| Wilson's (Livery Stables) Limited | Arts & recreation | 2012 |
| Wilsons Boatmen Limited | Transport & logistics | 2019 |
| Windblade Consulting Ltd | Professional & scientific | 2026 |
| Windserv Limited | Construction | 2017 |
| Winrose Holdings Limited | Other services | 2026 |
| Wisdom Media International Limited | Wholesale & retail | 2014 |
| Wishes Care and Support Ltd | Extraterritorial | 2013 |
| Wishes Care and Support Yorkshire Ltd | Health & social care | 2015 |
| Witham Road Developments Limited | Construction | 2022 |
| Withernay Limited | Manufacturing | 2002 |
| Witton Holdings Limited | Professional & scientific | 1986 |
| WJE Consulting Limited | Professional & scientific | 2021 |
| WJM (Beverley) Limited | Construction | 2015 |
| Wold Construction Company Limited | Construction | 1991 |
| Wolds Corporate Consulting Ltd | Professional & scientific | 2024 |
| Wolds Environmental Consulting Ltd | Professional & scientific | 2019 |
| Wolds Select Limited | Wholesale & retail | 2015 |
| WOM Outdoors CIC | Arts & recreation | 2023 |
| Wood Farming Partnership LLP | | 2024 |
| Wood Lane Management Company Limited | Hospitality | 1990 |
| Woodleigh Manor (Brandesburton) Management Company Limited | Households | 2005 |
| Woodlesford Joinery Limited | Construction | 2018 |
| Woodmansey Developments Limited | Construction | 2008 |
| Woodmansey Grill House Ltd | Hospitality | 2025 |
| Woodmansey Local Limited | Wholesale & retail | 2019 |
| Work Contractors Limited | Extraterritorial | 2012 |
| Workathlete Ltd. | Professional & scientific | 2015 |
| Wortley House (Hornsea) Management Limited | Real estate | 2014 |
| WP Legacy Holdings Ltd | Financial services | 2024 |
| Wright Inspiration Limited | Professional & scientific | 2009 |
| Wright Padel Academy Ltd | Education | 2026 |
| WRX (Hull) Limited | Transport & logistics | 2017 |
| WS Holm Industrial Ltd | Professional & scientific | 2019 |
| Wyecliffe Consultants Limited | Professional & scientific | 2016 |
| Wynter Acquisitions Ltd | Real estate | 2025 |
| Wynter Properties Ltd | Real estate | 2025 |
| X2 Method Limited | Education | 2025 |
| Y&B Property Ltd | Real estate | 2025 |
| Yarrow Energy (Yorkshire) Limited | Construction | 2026 |
| Yarrows Aggregates Limited | Mining & quarrying | 2002 |
| Yarrows Power Limited | Mining & quarrying | 2012 |
| Yates Initiative Ltd | Professional & scientific | 2021 |
| Yaxley Developments 1 Limited | Real estate | 2021 |
| Yaxley Developments 2 Limited | Real estate | 2021 |
| YDS Kennels Ltd | Agriculture & fishing | 2019 |
| Yellow Box Engineering Ltd | Manufacturing | 2017 |
| Yellow Crow Commercial Property Limited | Real estate | 2024 |
| Yellow Designers Ltd | Professional & scientific | 2009 |
| Yellowhoney Limited | Real estate | 2025 |
| Yin&Zhou Ltd | Hospitality | 2017 |
| YK Business Ltd | Professional & scientific | 2024 |
| Yorhire Ltd | Administrative & support | 2013 |
| York Gift Hampers Limited | Wholesale & retail | 2012 |
| York Valves Limited | Water & waste | 2012 |
| Yorkshire Aerials Limited | Wholesale & retail | 2016 |
| Yorkshire Air Testing Ltd | Professional & scientific | 2015 |
| Yorkshire Air Tightness Testing Ltd | Extraterritorial | 2015 |
| Yorkshire Balance and Diagnostic Services Ltd | Other services | 2021 |
| Yorkshire Bespoke Lodges Ltd | Manufacturing | 2022 |
| Yorkshire Coast Shotblasting Services Limited | Manufacturing | 2017 |
| Yorkshire Folklore Limited | Information & communication | 2025 |
| Yorkshire Formwork Limited | Construction | 2024 |
| Yorkshire Homes & Management Ltd | Real estate | 2024 |
| Yorkshire Joinery Group Hull Limited | Construction | 2022 |
| Yorkshire Land Developments Ltd | Construction | 2025 |
| Yorkshire Rose Tearoom Ltd | Financial services | 2025 |
| Yorkshire Smile Design Limited | Health & social care | 2023 |
| Yorkshire Standard Clothing Company Ltd | Wholesale & retail | 2026 |
| Yorkshire Timber Engineering Limited | Manufacturing | 2008 |
| Yorkshire Vale Properties Limited | Construction | 2024 |
| Yorkshire Vehicle Consultancy Ltd | Wholesale & retail | 2020 |
| Yorkshire Wold Sausages Limited | Manufacturing | 2005 |
| YOU Limited | Wholesale & retail | 2002 |
| YOU Living & Giving Ltd | Wholesale & retail | 2017 |
| Young Green Shoot Ltd | Wholesale & retail | 2024 |
| Your Better Way CIC | Professional & scientific | 2026 |
| Your Door Mortgage Advice Limited | Financial services | 2024 |
| Your First Smile Ltd | Professional & scientific | 2011 |
| Your Travel Partners Ltd | Administrative & support | 2023 |
| Yourfbaseller Ltd | Wholesale & retail | 2026 |
| ZAK Vision Ltd | Health & social care | 2016 |
| Zarley Demir Limited | Hospitality | 2026 |
| Zenmar Renewable Services Ltd | Professional & scientific | 2018 |
| Zeus Commercial Properties Limited | Real estate | 2025 |