| Winter Croc Limited | Administrative & support | 2022 |
| Wisetime Business Services Limited | Administrative & support | 2017 |
| Wishful Filming Ltd | Professional & scientific | 2025 |
| Withyfold Trading Estate Limited | Real estate | 2011 |
| Withyfold Trading Estate Management Company Limited | Real estate | 2026 |
| Wizzoo Limited | Information & communication | 2007 |
| WLH Francis Limited | Real estate | 2020 |
| Wolfworthy Ltd | Wholesale & retail | 2012 |
| Women in Food and Farming CIC | Administrative & support | 2023 |
| Woodfield Property Company Limited | Construction | 2007 |
| Woodgate Engineering Limited | Professional & scientific | 1998 |
| Woodgrove Court RTM Company Ltd | Households | 2019 |
| Woodhouse Cottages Management Company Limited | Households | 2025 |
| Woodlands Court (AE) RTM Company Limited | Households | 2018 |
| Woodlands Investments (Bollington) Limited | Financial services | 2015 |
| Woodpecker Works Limited | Manufacturing | 2025 |
| Woodward Garage Ltd | Professional & scientific | 2015 |
| Woodwose Ltd | Financial services | 2021 |
| Woody & Co Barbers Ltd | Other services | 2026 |
| Woottons Limited | Construction | 1996 |
| Work Space Cheshire Limited | Real estate | 2025 |
| Workflow Utilities Ltd | Construction | 2024 |
| Worldorf Ventures UK Ltd | Information & communication | 2024 |
| Worldwide Football Academy Limited | Extraterritorial | 2023 |
| Wormsworth Ltd | Professional & scientific | 2025 |
| Worth Partners Limited | Agriculture & fishing | 2020 |
| Worth Projects Limited | Construction | 2023 |
| Worthington Property Investments Ltd | Real estate | 2020 |
| WOW Energy Limited | Professional & scientific | 2014 |
| WPL Group Holdings Limited | Financial services | 2017 |
| Wreckless Vape Limited | Wholesale & retail | 2019 |
| Wrencraft Ltd | Manufacturing | 2025 |
| Wright Direction Business Consultancy Limited | Professional & scientific | 2017 |
| Wright Locum Solutions Limited | Professional & scientific | 2015 |
| Wrightway Construction and Technical Services Ltd | Construction | 2023 |
| Writem Limited | Information & communication | 2022 |
| Writeremedy Ltd | Professional & scientific | 2021 |
| WSD Properties Ltd | Real estate | 2020 |
| Wychwood Village (Chesterton Way) RTM Company Limited | Households | 2018 |
| WYE Head HR Consulting Limited | Administrative & support | 2025 |
| WYF Online Store Ltd | Wholesale & retail | 2026 |
| Wylk & Co Ltd | Manufacturing | 2025 |
| Wyman Limited | Wholesale & retail | 1985 |
| X-Automotive Limited | Wholesale & retail | 2025 |
| X2 Recruit Ltd | Administrative & support | 2021 |
| Xl-Pc Solutions Limited | Information & communication | 2021 |
| Xstatus Ltd | Information & communication | 2022 |
| XTG Ltd | Information & communication | 2024 |
| Xyantyx Ltd | Professional & scientific | 2019 |
| Xythermal Ltd | Professional & scientific | 2014 |
| Xyzero Limited | Information & communication | 2012 |
| Yabble Ltd | Information & communication | 2020 |
| Yacht Brokers Direct LLP | | 2010 |
| Yardley Property Investments Ltd | Real estate | 2021 |
| YAS Bean Ltd | Hospitality | 2021 |
| Yasamin Limited | Administrative & support | 2015 |
| YD Management Limited | Real estate | 2019 |
| Yellow 10 Ltd | Administrative & support | 2021 |
| Yellow Light Card Ltd | Other services | 2026 |
| Yemdok Properties Ltd | Real estate | 2023 |
| Yemdok Ventures Limited | Health & social care | 2017 |
| Yenom Holdings Limited | Financial services | 2025 |
| Yenza Consulting Ltd | Professional & scientific | 2025 |
| Yesss Limited | Professional & scientific | 2012 |
| YEW Tree Self Storage Ltd | Administrative & support | 2023 |
| YGM Developments Ltd | Construction | 2024 |
| Ykad Limited | Real estate | 1998 |
| YLC Group Ltd | Administrative & support | 2025 |
| YMN Electrical Limited | Professional & scientific | 2017 |
| Ymrest Ltd | Health & social care | 2024 |
| Ynys MON Freeport Limited | Professional & scientific | 2023 |
| Yoga Goddess Limited | Wholesale & retail | 2016 |
| Yoga MCR Ltd | Arts & recreation | 2023 |
| Yoga on the Edge Limited | Other services | 2020 |
| Yonder Group Ltd | Hospitality | 2023 |
| Yorkshire Dales Limited | Hospitality | 2011 |
| Your Business Doctor Limited | Professional & scientific | 2014 |
| Your Future Mortgage Advisor Limited | Financial services | 2026 |
| Your Van Direct Limited | Wholesale & retail | 2026 |
| Yourfilling Limited | Manufacturing | 2025 |
| Youth Engagement Schools Trust | Education | 2013 |
| Youth Kicks Coaching Ltd | Arts & recreation | 2014 |
| YUM YUM Store Limited | Wholesale & retail | 2021 |
| Z in the Attic Ltd | Wholesale & retail | 2025 |
| Zaben Management Ltd | Professional & scientific | 2025 |
| Zacgo Digital Limited | Information & communication | 2023 |
| Zako (UK) Limited | Extraterritorial | 2004 |
| ZC School Improvement Ltd | Education | 2017 |
| Zebra Consulting Services Limited | Professional & scientific | 2021 |
| ZEBRA26 Ltd | Professional & scientific | 2013 |
| Zelle Ltd | Information & communication | 2021 |
| Zendays Limited | Information & communication | 2024 |
| Zero Support LLP | | 2017 |
| Zhen LI Ltd | Real estate | 2025 |
| Zheya Ltd | Administrative & support | 2019 |
| ZJA Ltd | Health & social care | 2022 |
| Zool Digital UK Limited | Professional & scientific | 2014 |
| Zootech (UK) Limited | Agriculture & fishing | 2012 |
| Zoozdigital Limited | Information & communication | 2023 |
| Zuch Enterprise Limited | Real estate | 2019 |