| Wightman Farming (NW) Ltd | Agriculture & fishing | 2024 |
| Wightman Holdings Limited | Financial services | 2019 |
| Wilbraham Holistic Centre Limited | Health & social care | 2006 |
| Wilderness Lune Valley Ltd | Other services | 2022 |
| Wildflower Coffee Ltd | Hospitality | 2026 |
| William Mawdsley Limited | Professional & scientific | 2025 |
| Wills Oakden 3D Eventing Ltd | Arts & recreation | 2025 |
| Wills Oakden Sales Ltd | Agriculture & fishing | 2025 |
| Wilson Commercial Vehicle Services Ltd | Wholesale & retail | 2026 |
| Wilson Race & Performance Ltd | Wholesale & retail | 2017 |
| Wine Alchemy Limited | Professional & scientific | 2005 |
| Witch Weigh Systems Ltd | Manufacturing | 2019 |
| Witherslack (Denmark) Limited | Financial services | 2024 |
| Witherslack (Denmark) Midco Limited | Financial services | 2024 |
| Witherslack Care Limited | Extraterritorial | 2003 |
| Witherslack Group (Holdings) Limited | Financial services | 2010 |
| Witherslack Group Limited | Education | 1998 |
| Witherslack Group of Schools Limited | Education | 1996 |
| Witherslack Hall School Limited | Extraterritorial | 2002 |
| Witherslack Training and Development Limited | Education | 2003 |
| Witherslack Wiltshire Limited | Health & social care | 1999 |
| Wizard Automotive Ltd | Wholesale & retail | 2016 |
| Wizard Lettings Limited | Hospitality | 2019 |
| Wombat Holdings Ltd | Real estate | 2018 |
| Wonderland Retreats Luxury Glamping Limited | Hospitality | 2023 |
| Woodchar Ltd | Agriculture & fishing | 2021 |
| Woodcrest Contracting Limited | Construction | 2004 |
| Woodpro Carpentry Solutions Ltd | Construction | 2018 |
| Woof Wise Limited | Other services | 2023 |
| Wordsworth Bidco Limited | Financial services | 2017 |
| Wordsworth Midco 1 Limited | Financial services | 2017 |
| Wordsworth Midco 2 Limited | Financial services | 2017 |
| WR Smartphone Ltd | Wholesale & retail | 2014 |
| Wright Contractors Ltd | Construction | 2022 |
| WS Burrow & SON Limited | Hospitality | 2023 |
| XI Training Limited | Information & communication | 1999 |
| Yazmils Investments | Real estate | 2025 |
| Yazmils Properties Ltd | Real estate | 2020 |
| Yealand Consulting Limited | Information & communication | 2015 |
| Yellow Jacketz Limited | Wholesale & retail | 2025 |
| YEW Tree (Barbon) Management Company Limited | Real estate | 2000 |
| YFH Holdings Limited | Financial services | 2022 |
| Yogakidz Ltd | Health & social care | 2008 |
| Yogakidz Worldwide Ltd | Education | 2012 |
| Yorkshire Prestige Properties Limited | Hospitality | 2024 |
| Yorkshire Solar Ltd | Construction | 2023 |
| Young PUB Leisure Limited | Hospitality | 2018 |
| Zebra Electrical (NW) Ltd | Construction | 2024 |