| Valecoms Ltd | Information & communication | 2019 |
| Valentine Chains Ltd | Administrative & support | 2017 |
| Vaughan Rentals Ltd | Real estate | 2026 |
| Veerbhan Limited | Wholesale & retail | 2025 |
| Vidaflow Ltd | Wholesale & retail | 2024 |
| Waels Vape Empire Ltd | Wholesale & retail | 2024 |
| Waterco (Trustee) Limited | Professional & scientific | 2023 |
| Watergate Homes Limited | Real estate | 2002 |
| Wave Dragon Wales Limited | Energy | 2005 |
| Welcome Takeaway (Ruthin) Limited | Hospitality | 2009 |
| Well ST Properties Limited | Real estate | 2026 |
| Well Street Solutions Limited | Extraterritorial | 2016 |
| Wepre Developments Limited | Real estate | 1990 |
| Wepre Holdings Limited | Financial services | 2014 |
| Wern Holdings CYF | Financial services | 2026 |
| Wern Meadow CYF | Hospitality | 2021 |
| Wern Property Holdings CYF | Financial services | 2026 |
| Wern Vets CYF | Professional & scientific | 2020 |
| Wernvets Properties CYF | Real estate | 2026 |
| White Bear Garage Limited | Professional & scientific | 2005 |
| White Blossom Bespoke Ceremonies Ltd | Other services | 2025 |
| Williams Plant Hire (Ruthin) Ltd | Professional & scientific | 2008 |
| Wine Vaults CYF | Hospitality | 2019 |
| Woolford's Binding Co. Ltd | Manufacturing | 2025 |
| Workplace-Worksafe Ltd | Wholesale & retail | 2009 |
| Wyau Llainwen Eggs CYF | Agriculture & fishing | 2026 |
| Wynne Surveyors Ltd | Professional & scientific | 2012 |
| Wynorah Properties Ltd | Extraterritorial | 2025 |
| Y Ddau FUL CYF | Hospitality | 2023 |
| Yddewines Ltd | Wholesale & retail | 2024 |
| YES Idol Ltd | Wholesale & retail | 2022 |
| Young and Mindful CIC | Health & social care | 2022 |
| Zebra Athletics UK Limited | Wholesale & retail | 2023 |