| Walnut Renovation & Development Limited | Construction | 2000 |
| Walnut Squared Limited | Construction | 2013 |
| Water Connections Limited | Construction | 2013 |
| Wavio Ltd | Information & communication | 2026 |
| WEAR2PLAY Limited | Wholesale & retail | 2016 |
| WEAR2WORK Limited | Wholesale & retail | 2016 |
| Webber Hire Ltd | Administrative & support | 2025 |
| Webbers BET Limited | Real estate | 2013 |
| Webbers Leisure Limited | Arts & recreation | 2006 |
| Wellington Road (Rhyl) Management Company Limited | Households | 2005 |
| Westhead Ltd | Extraterritorial | 2018 |
| Whisky Tango Foxtrot Bars Ltd | Hospitality | 2026 |
| Wicked Wales Film C.I.C. | Information & communication | 2023 |
| Wigfair Hall Limited | Hospitality | 2018 |
| Winston Williams Limited | Wholesale & retail | 2019 |
| Witherspoon Attractions Ltd | Arts & recreation | 2025 |
| Witherspoon Bars Ltd | Hospitality | 2022 |
| WOK Express Garston Limited | Hospitality | 2013 |
| Wondergraphers Ltd | Professional & scientific | 2023 |
| Works Naturally Skincare Ltd | Manufacturing | 2010 |
| Wrapp’D & Loaded Ltd | Hospitality | 2025 |
| Wrconsulting Ltd | Information & communication | 2011 |
| Wrenbury Heath Limited | Real estate | 2025 |
| Wrexham Limited | Hospitality | 2005 |
| WTG Offshore Ltd | Professional & scientific | 2013 |
| Xonical Networks Limited | Construction | 2020 |
| Xtcs (NW) Ltd | Administrative & support | 2017 |
| Yang Sing 2021 Limited | Hospitality | 2021 |
| Yeung Sing Chinese Restaurant Ltd | Hospitality | 2015 |
| Yeung Sing Takeaway Limited | Hospitality | 2025 |
| Yummy Kitchen Fish Chips Ltd | Hospitality | 2024 |
| Zenith Group (NW) Ltd | Transport & logistics | 2011 |
| ZONE37 Ltd | Information & communication | 2026 |
| ZW Twist Scaffolding Limited | Construction | 2019 |