| Welt Handel Ltd | Wholesale & retail | 2015 |
| Wembley Works Ltd | Real estate | 2025 |
| Wesleyville Trading Ltd | Wholesale & retail | 2023 |
| West One Solutions Limited | Professional & scientific | 2012 |
| West Riding Blinds Limited | Construction | 2015 |
| West Ridings Equestrian Limited | Agriculture & fishing | 2025 |
| West Yorkshire Carpets Ltd | Construction | 2025 |
| West Yorkshire Handyman Ltd | Extraterritorial | 2025 |
| Westborough (Manchester) Limited | Real estate | 2006 |
| Westermans Properties Ltd | Real estate | 2025 |
| Westex (Carpets) Limited | Manufacturing | 1980 |
| Westgate Electronics Ltd | Other services | 2011 |
| Westgate Timber Ltd | Wholesale & retail | 2025 |
| WESTGATE2 Ltd | Construction | 2024 |
| Westieri Beds Limited | Manufacturing | 2015 |
| Westriding Textile Company Limited | Extraterritorial | 2003 |
| Westtownlaundrette Ltd | Administrative & support | 2024 |
| WF1 Designs Ltd | Wholesale & retail | 2025 |
| WG Asset Trading Limited | Wholesale & retail | 2018 |
| WG Commercials (Holdings) Limited | Real estate | 2008 |
| Wharfdale Foods (Dewsbury) Ltd | Hospitality | 2024 |
| Wheel Repair Centre Ltd | Wholesale & retail | 2025 |
| White Cloud Solutions Limited | Information & communication | 2024 |
| White Orchid Services Limited | Health & social care | 2018 |
| White Rose Fire Suppression Ltd | Construction | 2024 |
| White Rose Group Ltd | Wholesale & retail | 2021 |
| White Rose Healthcare Investment Ltd | Wholesale & retail | 2019 |
| White Rose Homes (Doncaster) Ltd | Construction | 2025 |
| White Rose Pharmacy Services Ltd | Wholesale & retail | 2007 |
| Whitegates Commercial Estates Ltd | Real estate | 2017 |
| Whiterose Catering Limited | Wholesale & retail | 2013 |
| Whiterose Real Estate (Yorkshire) Ltd | Real estate | 2025 |
| Whitley Homes Ltd | Construction | 2021 |
| Willans Road Car Sales Ltd | Wholesale & retail | 2022 |
| Wilson Building Services Ltd | Professional & scientific | 2015 |
| Wilson Mitchell Properties Ltd | Real estate | 2019 |
| Wilson Parcel Logistics Ltd | Transport & logistics | 2025 |
| Wilsons Underlays Ltd | Manufacturing | 2016 |
| Wintersett Fisheries Limited | Agriculture & fishing | 2021 |
| Wishing Well Associates Limited | Other services | 2014 |
| Wishivo Ltd | Wholesale & retail | 2025 |
| Wizard Engines Limited | Professional & scientific | 2024 |
| WKD Ecigs Limited | Wholesale & retail | 2017 |
| WLS Holdings Limited | Professional & scientific | 2025 |
| WMP Dewsbury Ltd | Health & social care | 2022 |
| Womersley's Limited | Wholesale & retail | 2002 |
| Woodkirk Truck & Trailer Services Ltd | Wholesale & retail | 2013 |
| WR Payment Services Ltd | Administrative & support | 2024 |
| Wrigglesworth Holdings Ltd | Transport & logistics | 2000 |
| Wrigglesworth Textiles Ltd | Water & waste | 2003 |
| WRW Holdings Limited | Financial services | 2026 |
| WSA Arts CIC | Manufacturing | 2017 |
| Wsam Investments Limited | Other services | 2020 |
| Wuzara Ltd | Other services | 2015 |
| WY Cars Ltd | Wholesale & retail | 2025 |
| X Martial Arts Schools (New Earswick) Ltd | Arts & recreation | 2019 |
| XHZ Enterprises Ltd | Wholesale & retail | 2025 |
| Xomo Motor Company Limited | Wholesale & retail | 2019 |
| Xpert Car Hire Limited | Administrative & support | 2009 |
| Xtron Bikewear Limited | Wholesale & retail | 2018 |
| Xyntra Group Ltd | Construction | 2025 |
| Y & S Ventures Ltd | Administrative & support | 2014 |
| Yaaoz Limited | Health & social care | 2013 |
| Yacoob Medic Response Ltd | Wholesale & retail | 2025 |
| Yanmuu Limited | Wholesale & retail | 2026 |
| YAP Dewsbury Ltd | Health & social care | 2020 |
| YAP Management Ltd | Health & social care | 2018 |
| Yaqoob Investments Ltd | Real estate | 2023 |
| Yaran Ltd | Wholesale & retail | 2025 |
| YCR Distribution Limited | Wholesale & retail | 1973 |
| YDA Yorkshire Ltd | Professional & scientific | 2010 |
| YDS (UK) Holdings Limited | Extraterritorial | 2014 |
| YDS (UK) Limited | Transport & logistics | 2007 |
| YE Properties Limited | Construction | 2022 |
| Yellow Habib Limited | Wholesale & retail | 2023 |
| Yellow Raven Ltd | Health & social care | 2022 |
| Yellow Wave Limited | Health & social care | 2009 |
| YFA 1 Limited | Transport & logistics | 2025 |
| YHD Electronics Ltd | Wholesale & retail | 2017 |
| YHS Beds Ltd | Wholesale & retail | 2021 |
| Yilmaz UK Limited | Wholesale & retail | 2015 |
| YJ Beds Ltd | Manufacturing | 2021 |
| YMG Constructions Ltd | Construction | 2006 |
| YMI Group Limited | Health & social care | 2019 |
| Yokoauto Ltd | Wholesale & retail | 2026 |
| Yorec Ltd | Real estate | 2021 |
| York Events Limited | Hospitality | 2025 |
| Yorks Estates Ltd | Households | 2020 |
| Yorkshire Assembling Ltd | Administrative & support | 2022 |
| Yorkshire Beers Limited | Wholesale & retail | 2008 |
| Yorkshire British Beds Ltd | Manufacturing | 2021 |
| Yorkshire Cars & Vans Ltd | Wholesale & retail | 2024 |
| Yorkshire Dale Beds Limited | Manufacturing | 2023 |
| Yorkshire Foam Ltd | Wholesale & retail | 2026 |
| Yorkshire Grocery Ltd | Wholesale & retail | 2022 |
| Yorkshire Handmade Beds Limited | Wholesale & retail | 2021 |
| Yorkshire Ice Cream Ltd | Hospitality | 2018 |
| Yorkshire Kitchens and Bedrooms Ltd. | Manufacturing | 2020 |
| Yorkshire Microsuction Limited | Health & social care | 2022 |
| Yorkshire Multisolutions Limited | Wholesale & retail | 2026 |