| Worldwide International (EOT) Limited | Extraterritorial | 2025 |
| Worldwide International Limited | Transport & logistics | 1983 |
| Worthit Productions Ltd | Information & communication | 2019 |
| Worthy Motors Ltd | Wholesale & retail | 2024 |
| Worxstays Ltd | Real estate | 2026 |
| WPM Applications Limited | Professional & scientific | 1997 |
| WPM Retail Limited | Professional & scientific | 1997 |
| WPM Services Limited | Professional & scientific | 1997 |
| WPM Solutions Limited | Professional & scientific | 1994 |
| Wrap (Wirral) Community Interest Company | Education | 2022 |
| Wrap Holdings Ltd | Education | 2023 |
| Wrapform Interiors Ltd | Construction | 2026 |
| Wrapzilla UK Ltd | Wholesale & retail | 2021 |
| Wrexham Building Plastics (NW) Ltd | Wholesale & retail | 2011 |
| Wright Way Construction & Joinery Contractors Ltd | Construction | 2020 |
| WRO Bar Ltd | Hospitality | 2026 |
| WS Cladding Ltd | Construction | 2026 |
| WUC Schoolwear Mold Ltd | Wholesale & retail | 2026 |
| WUC Wear Limited | Wholesale & retail | 2025 |
| Wwcpd Management Ltd | Professional & scientific | 2021 |
| Wychwood Property Management Limited | Real estate | 2022 |
| Wyllie Estates Ltd | Real estate | 2017 |
| X3 KWK Ltd | Other services | 2021 |
| X500 Consulting Ltd | Information & communication | 2013 |
| Xanbe Limited | Other services | 2018 |
| Xavier Place Management Company Limited | Households | 2005 |
| XCS Associates Limited | Information & communication | 2006 |
| Xdreamer Investments Limited | Real estate | 2018 |
| XEN Consultancy Limited | Information & communication | 2019 |
| Xenotek Software Ltd | Information & communication | 2017 |
| Xi:Xv Hair Limited | Other services | 2020 |
| Xiang RUI Limited | Hospitality | 2026 |
| XMX Transport Ltd | Transport & logistics | 2025 |
| XPLORE4X4 Ltd | Wholesale & retail | 2020 |
| Xpress 24 Limited | Transport & logistics | 2008 |
| Xtec Consulting Ltd | Professional & scientific | 1997 |
| Xyleia Limited | Construction | 2023 |
| Y CWT Cwrw | Extraterritorial | 2023 |
| Yabsta (UK) Limited | Professional & scientific | 2024 |
| Yaktien Property Limited | Real estate | 2023 |
| Yamba Films Limited | Information & communication | 2021 |
| Yankies Sweets and Treats Ltd | Hospitality | 2019 |
| Yapp Properties Ltd | Real estate | 2026 |
| Yasham Digital Ltd | Information & communication | 2023 |
| Yellow Cable Ltd | Professional & scientific | 2024 |
| Yellowfish Solutions Limited | Information & communication | 2006 |
| YEW Tree Court (Heswall) Management Company Limited | Households | 2005 |
| YH Catering Limited | Hospitality | 2024 |
| YIU Sing Wholesale Limited | Hospitality | 2021 |
| YNY 8 Ltd | Transport & logistics | 2026 |
| Yogasmiths Limited | Health & social care | 2019 |
| Yogi Health Ltd | Manufacturing | 2014 |
| York House (West Kirby) Management Limited | Real estate | 1968 |
| Yotso Ltd | Information & communication | 2020 |
| Younger Beauty Ltd | Other services | 2018 |
| Younger Chiropractic (2021) Ltd | Health & social care | 2021 |
| Younger Concepts (UK) Limited | Information & communication | 2018 |
| Youngs Accountants Limited | Professional & scientific | 2026 |
| Young’S Electrical Engineering Ltd | Construction | 2025 |
| Your Community Space Limited | Information & communication | 2016 |
| Your HOUSE2HOME Ltd | Construction | 2025 |
| Your Tax Refund Limited | Administrative & support | 2011 |
| Yourdo Limited | Information & communication | 2025 |
| Yourtech Innovation Ltd | Wholesale & retail | 2024 |
| YR HEN Capel Properties Ltd | Construction | 2021 |
| Yummy Time Fast Food Ltd | Hospitality | 2024 |
| Yuso Studios Ltd | Wholesale & retail | 2026 |
| ZA Accountants Limited | Professional & scientific | 2025 |
| Zachar Limited | Professional & scientific | 2025 |
| Zahara Properties Ltd | Real estate | 2026 |
| Zaifat Medical Ltd | Health & social care | 2025 |
| Zapiplay Group Limited | Information & communication | 2016 |
| Zarbi Ltd | Information & communication | 2008 |
| Zavora Accounting Limited | Professional & scientific | 2021 |
| Zaybu Limited | Information & communication | 2012 |
| Zeera Restaurant (Wirral) Ltd | Hospitality | 2019 |
| Zees Invest Ltd | Real estate | 2026 |
| ZEN Safety Limited | Professional & scientific | 2025 |
| Zencon Construction Services Ltd | Administrative & support | 2007 |
| Zencí Limited | Wholesale & retail | 2019 |
| Zenith Engineering Enterprise Limited | Professional & scientific | 2024 |
| Zenith Training Academy Ltd | Education | 2024 |
| Zenith Vessel Management Limited | Professional & scientific | 2025 |
| Zenithnow Limited | Professional & scientific | 2018 |
| Zeon Enterprises Limited | Administrative & support | 2013 |
| ZES Barber Wirral Ltd | Other services | 2024 |
| Zeta Pharma Ltd | Wholesale & retail | 2020 |
| Zetec Recruitment Limited | Administrative & support | 2025 |
| ZHE Limited | Wholesale & retail | 2013 |
| Ziglo EAE Limited | Other services | 2018 |
| Zinarts Agency Ltd | Arts & recreation | 2018 |
| Zita Maria Limited | Health & social care | 2022 |
| ZM Consultancy Services Limited | Professional & scientific | 2025 |
| Zone Fitness Hoylake Limited | Arts & recreation | 2015 |
| Zones Homes Ltd | Real estate | 2016 |
| Zoosch Ltd | Administrative & support | 2009 |
| Zorbha DA Buddha Limited | Health & social care | 2018 |
| Zovar Property Staging Limited | Administrative & support | 2025 |
| Ztoa Driveway Ltd | Construction | 2026 |
| Zuger's Tea Room(Wirral) Ltd | Hospitality | 2019 |