| THE White Bear Autos Ltd | Wholesale & retail | 2021 |
| Three Five Nine Limited | Financial services | 2017 |
| Thunderbird Management Company Ltd | Households | 2024 |
| Tillwise Epos Ltd | Administrative & support | 2020 |
| Titanic Alarms Ltd | Administrative & support | 2024 |
| Top Mark Electrics Ltd | Construction | 2016 |
| Townsend Supplies Limited | Administrative & support | 2003 |
| Transcription Society Limited | Education | 2020 |
| Travelsport Limited | Administrative & support | 1964 |
| Treat Your Skin Limited | Wholesale & retail | 2006 |
| Triwer Holdings Limited | Transport & logistics | 2017 |
| TTR Recoverys Ltd | Wholesale & retail | 2026 |
| Two Sacred Hearts Healthcare Ltd | Administrative & support | 2025 |
| Ubella Social Ltd | Wholesale & retail | 2026 |
| UK Chess Congress Limited | Arts & recreation | 2025 |
| Unit Hive Ltd | Real estate | 2025 |
| Utility Contractors Limited | Construction | 2004 |
| V O Vaughan & SON Limited | Agriculture & fishing | 2022 |
| Vale of Clwyd Mind Association | Health & social care | 1998 |
| Vale Senior Care Limited | Health & social care | 2017 |
| Vale Street Kitchen Ltd | Hospitality | 2022 |
| Vale Veterinary Practice Ltd | Professional & scientific | 2019 |
| Vale View Ltd | Health & social care | 2014 |
| Vanilla Bean Cakes Ltd. | Wholesale & retail | 2019 |
| Venaki Limited | Professional & scientific | 2025 |
| Vernon Upvc & Joinery Ltd | Construction | 2024 |
| Vibrant Medical Limited | Manufacturing | 1999 |
| Visit Stay Play North Wales Ltd | Hospitality | 2022 |
| Vita Panacea Ltd | Manufacturing | 2025 |
| Vitspec 2U Limited | Professional & scientific | 2007 |
| Voip North Wales Ltd | Information & communication | 2022 |
| W T Pritchard Limited | Professional & scientific | 2010 |
| W. Adventure Racing Ltd | Arts & recreation | 2018 |
| Waen LAS Shires Ltd | Agriculture & fishing | 2024 |
| Wales Heritage Orchards Ltd | Agriculture & fishing | 2021 |
| Warren Woods Ltd | Education | 2010 |
| Warrendale Cottage Ltd | Health & social care | 2004 |
| WB Civils Ltd | Construction | 2025 |
| WE Run Bright Ltd | Wholesale & retail | 2021 |
| WEK (22HS) Limited | Real estate | 2025 |
| WEK Developments Limited | Financial services | 2025 |
| WEK Property Limited | Real estate | 2024 |
| Wheel Building UK Limited | Wholesale & retail | 2017 |
| White Event Management Limited | Arts & recreation | 2008 |
| Wholesale Hair Systems Ltd | Other services | 2023 |
| Whomp Property Ltd | Construction | 2016 |
| Wilding Fashion Limited | Arts & recreation | 2017 |
| Will Pitts Limited | Households | 2024 |
| Wills UNI LLP | | 2025 |
| Willsky Ltd | Construction | 2024 |
| Willwriting Systems Ltd | Professional & scientific | 2003 |
| Window Cleaner Near ME Ltd | Information & communication | 2025 |
| Wings Trading Ltd | Wholesale & retail | 2024 |
| Wireworx Electrical Solutions Ltd | Construction | 2024 |
| Woodcrazy Ltd. | Manufacturing | 2015 |
| Woodland Skills Centre Limited | Other services | 2025 |
| Wppp PCN Recovery Limited | Administrative & support | 2017 |
| Wrexham Music Cooperative Ltd | Education | 2018 |
| Wynford Design Ltd | Professional & scientific | 2024 |
| Wynn Rogers Architectural Services Ltd | Professional & scientific | 2016 |
| Yard Space (Wales) Limited | Extraterritorial | 2019 |
| Yard Space Limited | Real estate | 2014 |
| YLC UK Limited | Construction | 2012 |
| Yoma Architecture Ltd | Professional & scientific | 2020 |
| Zelim Limited | Manufacturing | 2017 |
| Zombie Hunt Limited | Other services | 2021 |