| Wirral Property Investments Limited | Real estate | 2018 |
| Wirral Property KW Ltd | Real estate | 2023 |
| Wirral Property Law Ltd | Professional & scientific | 2019 |
| Wirral Reiki Rooms Ltd | Other services | 2019 |
| Wirral Society of the Blind and Partially Sighted | Health & social care | 2012 |
| Wirral Sports & Leisure Limited | Wholesale & retail | 1981 |
| Wirral Stone Ltd | Manufacturing | 2021 |
| Wirral Study Zone Ltd | Education | 2026 |
| Wirral Telecom Limited | Information & communication | 2013 |
| Wirral Tutoring Ltd | Education | 2025 |
| Wirral Wave Radio C.I.C. | Information & communication | 2020 |
| Wirral Wellbeing Limited | Health & social care | 2019 |
| Wirral Wellness Limited | Extraterritorial | 2023 |
| Wirral Windows Limited | Manufacturing | 2017 |
| Wirral Workers Ltd | Real estate | 2025 |
| Wirral Youth Zone | Other services | 2014 |
| WIRRAL123 Ltd | Hospitality | 2024 |
| Wirralcherrypickers Limited | Construction | 2023 |
| Wirrale Breweries Limited | Extraterritorial | 2013 |
| Wise Wealth Property Ltd | Real estate | 2025 |
| Wish Upon a Party Entertainment Limited | Arts & recreation | 2022 |
| WL Developments Ltd | Construction | 2023 |
| Wolf Law Solicitors Limited | Professional & scientific | 2014 |
| Woodchurch Car Wash Ltd | Administrative & support | 2026 |
| Woodlands Rest Home Limited | Health & social care | 2008 |
| Woodside Area Community Interest Company | Financial services | 2017 |
| Woodside Farmhouse Limited | Health & social care | 2006 |
| Woodside Property Services Ltd | Construction | 2018 |
| Woody's Building Services Limited | Other services | 2019 |
| Worldly Vapes Ltd | Wholesale & retail | 2025 |
| Worldly Vapes Upton Road Ltd | Wholesale & retail | 2025 |
| Worldwide Christian Trust | Other services | 1992 |
| Worrall Park Estates Limited | Real estate | 2014 |
| WOW Playgrounds Ltd | Manufacturing | 2022 |
| WOW WOW Group Ltd | Information & communication | 2023 |
| Wrestle Tours Limited | Hospitality | 2022 |
| Wrexham Plant Hire Limited | Construction | 2016 |
| Wrightway Windows & Construction Limited | Construction | 2019 |
| WTM Holdings Limited | Financial services | 2021 |
| Wylde Bakery Ltd | Wholesale & retail | 2024 |
| Wynberg Limited | Construction | 2026 |
| Wyncon Investments Limited | Construction | 1999 |
| X-Stream Cams Ltd | Other services | 2024 |
| Xcel MEN Fashion Ltd | Wholesale & retail | 2025 |
| Xjxl Capital Ltd | Professional & scientific | 2026 |
| XSC Customs Ltd | Manufacturing | 2024 |
| XZC 16888 Ltd | Hospitality | 2025 |
| YAR Care Group Ltd | Professional & scientific | 2025 |
| Ydeerecordingstudio Ltd | Information & communication | 2025 |
| Yellow Submarine Lettings Limited | Real estate | 2025 |
| Yeti Services NW Limited | Construction | 2023 |
| Yewdale Management Limited | Households | 1991 |
| YH 79 Limited | Hospitality | 2025 |
| YJZ Limited | Wholesale & retail | 2025 |
| Yolobytes Ltd | Wholesale & retail | 2025 |
| Yong Sheng Hang Ltd | Hospitality | 2019 |
| York Homes (NW) Limited | Construction | 2019 |
| Yosonic Limited | Information & communication | 2004 |
| Your Choice Estates Ltd | Real estate | 2020 |
| Your Choice Storage Ltd | Transport & logistics | 2025 |
| Your Energy Systems Ltd | Construction | 2024 |
| Your Legal Hub Ltd | Other services | 2023 |
| Your Therapy With Jess Limited | Health & social care | 2023 |
| YR Heli Limited | Financial services | 2018 |
| YXO Studios Ltd | Information & communication | 2018 |
| Zafarr Limited | Wholesale & retail | 2023 |
| Zamora Fusion Limited | Hospitality | 2025 |
| Zansys Ltd | Information & communication | 2000 |
| Zatechnologies Ltd | Information & communication | 2025 |
| Zenifa Store Ltd | Wholesale & retail | 2024 |
| Zinga Entertainment Limited | Wholesale & retail | 2021 |
| Ziraja Ltd | Hospitality | 2026 |
| Zircom EOT Trustees Ltd | Administrative & support | 2018 |
| Zircom Ltd | Professional & scientific | 2002 |
| Zizou TM Ltd | Administrative & support | 2026 |
| Zyborg Games Ltd | Information & communication | 2009 |