| Venables a Limited | Wholesale & retail | 2024 |
| Venda Boys Limited | Wholesale & retail | 2024 |
| Veritapp Limited | Information & communication | 2024 |
| Veritas Accounts Ltd | Professional & scientific | 2025 |
| Veritas Advisory Holdings Limited | Financial services | 2024 |
| Veritas Advisory Limited | Professional & scientific | 2013 |
| Verve Aero Ltd | Professional & scientific | 2023 |
| Viking Master Tech Ltd | Wholesale & retail | 2024 |
| VINE25 Ltd | Hospitality | 2025 |
| Vintage Vision (Wales) | Wholesale & retail | 2011 |
| Virtual Assistant Solutions Ltd | Administrative & support | 2024 |
| Virtual Communications UK Limited | Professional & scientific | 2006 |
| Vision Computer Centre Limited | Wholesale & retail | 2003 |
| Visual Foundry Limited | Information & communication | 1999 |
| Vive UT Vivas Ltd | Wholesale & retail | 2020 |
| Vortex Scientific Ltd | Professional & scientific | 2025 |
| VSB Voice Limited | Arts & recreation | 2010 |
| WAJ Properties Limited | Real estate | 2014 |
| Wales and Border Counties Plant Hire Limited | Administrative & support | 1979 |
| Walking Adventures Limited | Arts & recreation | 2024 |
| Walnut Tree Garage Limited | Wholesale & retail | 2013 |
| Waltham Consulting Limited | Professional & scientific | 2003 |
| Wander Two Limited | Financial services | 2015 |
| Watergrass Properties Limited | Real estate | 2019 |
| Wbcp (Bedwellty) Limited | Real estate | 2014 |
| Wbcp (Pontypridd) Limited | Real estate | 2026 |
| Wbcp (Trefil) Limited | Real estate | 2014 |
| WCR Plumbing and Maintenance Ltd | Construction | 2019 |
| Wealth Devolution Limited | Professional & scientific | 2012 |
| Wealth Doctor Financial Planning Ltd | Financial services | 2014 |
| Websites Without Worry Limited | Information & communication | 2003 |
| Wedgwood Park Mansion Management Company Limited | Households | 2018 |
| Weselak International Limited | Financial services | 2024 |
| Wessex Insurance Brokers Ltd | Financial services | 2022 |
| West MON Investments Limited | Health & social care | 2012 |
| West Wales Holidays Limited | Hospitality | 2003 |
| Westar Worship Ltd | Information & communication | 2018 |
| Westbournes Limited | Professional & scientific | 2005 |
| Western Power & Lighting Limited | Construction | 2014 |
| Western Trading Services Limited | Real estate | 1993 |
| Westminster & Whitehall Partners Ltd | Professional & scientific | 2025 |
| Westwood (Commercial) Property Ltd | Extraterritorial | 2018 |
| Westwood (Property Management) Limited | Real estate | 2010 |
| WH2 Ltd | Construction | 2023 |
| White Castle Vineyard Ltd | Manufacturing | 2017 |
| White Hart Forestry Ltd | Agriculture & fishing | 2021 |
| Whitehouse Agriculture Limited | Agriculture & fishing | 2021 |
| Whitehouse Cottages Limited | Real estate | 2021 |
| Whittal-Williams Energy Limited | Energy | 2013 |
| Wholesalenpt Limited | Wholesale & retail | 2025 |
| Wideuk Ltd | Information & communication | 2023 |
| Wiggy Wheels Ltd | Transport & logistics | 2021 |
| Wild Dawn Outdoors CIC | Education | 2025 |
| Wild World Limited | Construction | 2017 |
| Wildwen Ltd | Wholesale & retail | 2023 |
| Will James Carpentry Limited | Manufacturing | 2026 |
| Will Planning Solutions Limited | Other services | 2008 |
| Williams Creative Consultancy Ltd | Professional & scientific | 2022 |
| Willis Westcott (Monmouth) Ltd | Wholesale & retail | 2013 |
| Wiltshire Family Investment Holdings Limited | Real estate | 2023 |
| WIN Tall Ltd | Financial services | 2026 |
| Winchester Electrical Services Ltd | Construction | 2015 |
| Winner’S Circle Racing Ltd | Arts & recreation | 2024 |
| WM & DJ James Development Services Ltd | Real estate | 2002 |
| Women in Fenestration Network Ltd | Administrative & support | 2026 |
| Wood U Believe IT Ltd | Manufacturing | 2019 |
| Woodhouse Engineering Services Limited | Professional & scientific | 2021 |
| Woodland Makers Limited | Manufacturing | 2026 |
| Woodland Services (Abergavenny) Limited | Wholesale & retail | 2010 |
| Woodlands (Abergavenny) Management Company Limited | Households | 2012 |
| Woodpecker Carpentry Wales Limited | Construction | 2009 |
| Worcester City Barber Ltd | Other services | 2020 |
| WOW World Group SW Limited | Education | 2018 |
| WW Yourspace Limited | Transport & logistics | 2021 |
| Ww&W Educational Services Limited | Education | 2023 |
| WYE Valley Property Ltd | Construction | 2020 |
| WYE Valley Slot Car Club Ltd | Arts & recreation | 2021 |
| WYE Valley Textiles Studios Ltd | Arts & recreation | 2025 |
| Wyrdscale Design Studio Ltd | Professional & scientific | 2025 |
| Y Fenni Knights Ltd | Real estate | 2024 |
| YAC Properties Ltd | Real estate | 2011 |
| Yama Works Limited | Information & communication | 2025 |
| Your Healing Rooms Ltd | Real estate | 2025 |
| Ysgubor Consulting Ltd | Professional & scientific | 2019 |
| Yull Ltd | Wholesale & retail | 2010 |
| Zambanini Consulting Limited | Health & social care | 2009 |
| Ziggy's Coffee Shop Ltd | Hospitality | 2020 |
| Zinar Kebab Limited | Hospitality | 2025 |