| Woodbine Cottage Limited | Agriculture & fishing | 1998 |
| Woodbury Lettings Ltd | Real estate | 2020 |
| Woodcroft Veterinary Group Limited | Professional & scientific | 2009 |
| Woodend Properties (York) Limited | Real estate | 2017 |
| Woodhall Property Management Limited | Real estate | 2024 |
| Woodhorn Meadows (Ashington) Residents Management Company Limited | Real estate | 2021 |
| Woodhouse Construction York Limited | Construction | 2019 |
| Woodhouse Grange Cricket Club | Arts & recreation | 2019 |
| Woodland Gardens (Pyle) Management Company Limited | Households | 2014 |
| Woodland Lakes Limited | Hospitality | 2021 |
| Woodland Rise (Great Cornard) Residents Management Company Limited | Households | 2017 |
| Woodland View (Newton on Ouse) Management Company Ltd | Households | 2023 |
| Woodland Wonders Limited | Health & social care | 2015 |
| Woodlands Park Management Company (Leeds) Limited | Households | 2007 |
| Woodlark Place (Newbury) Residents Management Company Limited | Households | 2022 |
| Woodrow Studios Limited | Manufacturing | 2017 |
| Woods Meadow (Oulton) Residents Management Company Limited | Households | 2025 |
| WOODSTONE1 Ltd | Construction | 2021 |
| Woodthorpe (Yorkshire) Ltd | Construction | 2018 |
| Woodview (UK) Limited | Construction | 2010 |
| Woodview UK Property Ltd | Real estate | 2024 |
| Woody's of York Limited | Wholesale & retail | 2017 |
| Woof and Snout Ltd | Manufacturing | 2024 |
| Wool & Cashmere Limited | Wholesale & retail | 2019 |
| Wool Innovation International Group Limited | Wholesale & retail | 2022 |
| Woollons & Harwood Limited | Wholesale & retail | 1926 |
| Woolly Mahoosive Limited | Wholesale & retail | 2016 |
| Words by Friya Ltd | Professional & scientific | 2017 |
| Work With York Limited | Administrative & support | 2024 |
| Working OUR Way Consulting Ltd | Professional & scientific | 2025 |
| Workplace Bereavement Franchise Limited | Education | 2024 |
| Workplace Utilities Limited | Energy | 2018 |
| WORKROOM60 Limited | Manufacturing | 2014 |
| World Wide Shopping Mall Limited | Wholesale & retail | 1997 |
| WORLD1-1 Ltd | Information & communication | 2023 |
| Wormstore Limited | Administrative & support | 2002 |
| Worth Living for Ltd | Information & communication | 2024 |
| Worthygate Property Management Limited | Real estate | 1989 |
| WOT GR8 Property Limited | Real estate | 2015 |
| Wot-A-Hen 2018 Limited | Extraterritorial | 2017 |
| Wot-A-Hen Limited | Agriculture & fishing | 2015 |
| Wot-An-Egg 2020 Ltd | Agriculture & fishing | 2019 |
| Wot-An-Egg Limited | Agriculture & fishing | 1987 |
| WPS Fire & Security Ltd | Administrative & support | 2016 |
| WR Education Limited | Education | 2015 |
| WRA Travel Ltd | Administrative & support | 1999 |
| Wrap and Grill Ltd | Hospitality | 2025 |
| Wrathall Holdings Limited | Professional & scientific | 2022 |
| Wrathall Investment Group Limited | Real estate | 2022 |
| Wrathall Real Estate Partners Limited | Real estate | 2022 |
| Wreay Mansions Management Company Limited | Administrative & support | 2002 |
| Wren and Berry Group Limited | Manufacturing | 2014 |
| Wrigglesworth Garage Ltd | Wholesale & retail | 2013 |
| Wright & Peel Ltd | Administrative & support | 2019 |
| Wright Kixx Ltd | Education | 2021 |
| Wright Media Group Ltd | Arts & recreation | 2020 |
| Wright&Grainger Ltd | Arts & recreation | 2023 |
| Wrights of Crockey Hill Ltd | Water & waste | 2005 |
| Wrights of York Car Sales Ltd | Wholesale & retail | 2023 |
| Wrights Plumbing and Heating Supplies Ltd | Wholesale & retail | 2023 |
| Wrights Properties & Developments Ltd | Real estate | 2022 |
| Wright’S Oak & Smoke BBQ Ltd | Wholesale & retail | 2025 |
| Wrigley Developments Ltd | Real estate | 2025 |
| Wrigley Holdings Limited | Professional & scientific | 2002 |
| WS Electrical (York) Limited | Construction | 2000 |
| WS Music Ltd | Arts & recreation | 2025 |
| WS2 Coatings Limited | Manufacturing | 1994 |
| WT Morgan Welding Engineering Services Limited | Manufacturing | 2007 |
| WTF North Yorkshire Limited | Construction | 2015 |
| Wulfpack Limited | Professional & scientific | 2024 |
| Wundaz Ltd | Professional & scientific | 2022 |
| WVR Engineering Ltd | Wholesale & retail | 2021 |
| WW Music Ltd | Information & communication | 2009 |
| Wwwhatever Ltd | Information & communication | 2002 |
| Wycliffe Holdings Limited | Financial services | 2026 |
| WYK Air Ltd | Professional & scientific | 2020 |
| Wykebeck Lets Ltd | Real estate | 2018 |
| Wykham Park (Banbury) Management Company Ltd | Households | 2023 |
| Wyldmark Limited | Real estate | 2026 |
| Wynnlodge Limited | Information & communication | 2006 |
| Wyre Forest Veterinary Centre Limited | Extraterritorial | 2011 |
| Wyvern Grange Management Company Limited | Real estate | 2017 |
| X Martial Arts Leeds Ltd | Arts & recreation | 2024 |
| X Martial Arts Limited | Arts & recreation | 2017 |
| X Martial Arts Sheffield Ltd | Arts & recreation | 2022 |
| X Martial Arts, Malton Limited | Arts & recreation | 2019 |
| X-Kalay Limited | Arts & recreation | 2016 |
| XAI XAI Limited | Real estate | 1996 |
| Xander 97 Limited | Other services | 2014 |
| Xastre Limited | Financial services | 2020 |
| Xaverian Dental Practice Limited | Health & social care | 2012 |
| Xceed Developments Limited | Construction | 2020 |
| Xcitestudios Ltd | Information & communication | 2016 |
| Xefra Ltd | Wholesale & retail | 2024 |
| Xillio UK Limited | Information & communication | 2022 |
| Ximoo Limited | Administrative & support | 2025 |
| XLX Capital Ltd | Professional & scientific | 2013 |
| XMA HQ Ltd | Professional & scientific | 2025 |
| XNC Limited | Information & communication | 2013 |
| XON 7 Limited | Information & communication | 2023 |