| Woodhouse Furniture Ltd | Wholesale & retail | 2018 |
| Woodhouse Support Services Limited | Health & social care | 2014 |
| Woodland View (Heskin ) Limited | Real estate | 2017 |
| Woodlands Business Park Management Limited | Real estate | 2017 |
| Woodlands Financial Solutions Ltd | Financial services | 2019 |
| Woodlands Management (Buckshaw) Limited | Households | 2012 |
| Woodley Building & Carpentry Limited | Manufacturing | 2018 |
| Woodpark Investments Ltd | Real estate | 2021 |
| Woods Furniture Ltd | Other services | 2025 |
| Woods Promotions Ltd | Arts & recreation | 2024 |
| Woodstone Renovations Limited | Construction | 2015 |
| Wooldridge Ecotec Limited | Construction | 1997 |
| Wooldridge Plant Limited | Construction | 1997 |
| Woolton Rise Management Company Limited | Real estate | 2014 |
| Wootton & Wootton (T & D) Limited | Construction | 2010 |
| Wootton & Wootton Limited | Construction | 2003 |
| Worden Consulting Limited | Agriculture & fishing | 2013 |
| Workspace Properties Limited | Real estate | 2009 |
| World Juice Limited | Hospitality | 2012 |
| Wormhole Data Limited | Information & communication | 2019 |
| Worped Limited | Professional & scientific | 2015 |
| Worthington Brougham Furniture Limited | Wholesale & retail | 2016 |
| Worthington Energy Supply Limited | Energy | 2025 |
| Worthy Mortgages Ltd | Financial services | 2022 |
| WPL 1 Limited | Real estate | 2023 |
| Wraptek Signs Ltd | Professional & scientific | 2022 |
| Wraxall's Transport Solutions Limited | Transport & logistics | 2015 |
| Wray Associates Limited | Professional & scientific | 2014 |
| Wrekamendid Services Limited | Administrative & support | 2001 |
| Wright Commercial Consultants Limited | Professional & scientific | 2025 |
| Wright-Fit Developments Ltd | Construction | 2021 |
| WS Wealth Management Limited | Financial services | 2011 |
| WSR2R Limited | Administrative & support | 2023 |
| WTH (UK) Limited | Administrative & support | 2008 |
| WTS Commerce Ltd | Wholesale & retail | 2020 |
| Wuffwear Ltd | Wholesale & retail | 2026 |
| Wundapets Limited | Wholesale & retail | 2023 |
| Wustle Enterprises Ltd | Information & communication | 2023 |
| Wyldfire PR and Marketing Limited | Professional & scientific | 2012 |
| Wynerley Ltd | Real estate | 2026 |
| Wynn and Walker Estates Ltd | Real estate | 2014 |
| Wynn Properties Ltd | Real estate | 2020 |
| Wynne Business Limited | Wholesale & retail | 2012 |
| Wynne Consulting Limited | Administrative & support | 2004 |
| Wynne Interim Ltd | Administrative & support | 2024 |
| Wysteria Beauty Limited | Other services | 2019 |
| Wyville Property Ltd | Real estate | 2018 |
| X & P Developments Ltd | Construction | 2024 |
| X-Dale Holdings Limited | Financial services | 2025 |
| X. & P. Mcguigan Civil Engineering Ltd | Construction | 1996 |
| X20 Logistics Ltd | Transport & logistics | 2026 |
| Xaltro Ltd | Construction | 2025 |
| Xapo Vasp UK Limited | Financial services | 2025 |
| Xcavate Limited | Construction | 2019 |
| Xcavateagri Ltd | Agriculture & fishing | 2025 |
| Xccute Ltd | Professional & scientific | 2009 |
| XEC Travel Limited | Transport & logistics | 2016 |
| Xelflex Limited | Manufacturing | 2014 |
| XL Haulage Ltd | Education | 2025 |
| XL Marketing Ltd | Administrative & support | 2023 |
| XL Marketing Solutions Ltd | Administrative & support | 2026 |
| XU & LEE Catering Ltd | Wholesale & retail | 2019 |
| Xymertec Limited | Manufacturing | 2017 |
| Y'Earned IT Ltd | Administrative & support | 2020 |
| Yadigar Ltd | Hospitality | 2020 |
| YAK Thai Boxing Limited | Education | 2025 |
| Yaki Joro Ltd | Hospitality | 2019 |
| YAN Akoya Ltd | Wholesale & retail | 2020 |
| Yarrow Commercial Properties Ltd | Real estate | 2026 |
| Yarrow Maintenance Ltd | Administrative & support | 2018 |
| Yarrow Nursery Ltd. | Education | 2016 |
| Yarrow Property & Building Services Limited | Construction | 2014 |
| Yarrow Property Limited | Real estate | 2022 |
| Yarrow Spring Woods Limited | Education | 2026 |
| Yarrow Valley Group Ltd | Information & communication | 2017 |
| Yatab Company Ltd | Wholesale & retail | 2017 |
| Yates Ventures Limited | Financial services | 2024 |
| YCW Ltd | Wholesale & retail | 2019 |
| YCW Suspension Ltd | Extraterritorial | 2023 |
| YE Horns Inn Limited | Hospitality | 2021 |
| Yealands Estate Wines (UK) Limited | Wholesale & retail | 2014 |
| Yellow Cabs (North West) Limited | Transport & logistics | 2011 |
| Yellowshell Limited | Extraterritorial | 2024 |
| Yeluri & Dadayal SRE Services Ltd | Health & social care | 2019 |
| YES KAS CAN Limited | Information & communication | 2018 |
| Yeslek Limited | Other services | 2019 |
| Yeung's Kitchen Limited | Hospitality | 2002 |
| Yezu Nkwesiga Limited | Health & social care | 2016 |
| Ygng Ltd | Hospitality | 2026 |
| YMC Enterprises Ltd | Wholesale & retail | 2013 |
| YO Thai Mogul Ltd | Hospitality | 2022 |
| Yoga @ the Mill Ltd | Arts & recreation | 2018 |
| Yoga Teachers Together CIC | Other services | 2023 |
| Yorkcloud Limited | Professional & scientific | 1982 |
| Yorkshire Portraits Limited | Professional & scientific | 1998 |
| Yorkstone Dealer Limited | Wholesale & retail | 2021 |
| Young & Strong Limited | Real estate | 1994 |
| Your Brand Merchandise Limited | Professional & scientific | 2016 |
| Your FC Limited | Professional & scientific | 2023 |
| Your Health Store Ltd | Other services | 2022 |