| UK LED Lighting Limited | Manufacturing | 2007 |
| Ultimate Tanning Ltd | Other services | 2025 |
| Unique Homes (Cornwall) Ltd | Construction | 2016 |
| Upper Polmear (NO1) Management Company Limited | Real estate | 2017 |
| VEE DUB PUB Ltd | Hospitality | 2021 |
| Vehicle Detailing South West Limited | Administrative & support | 2024 |
| Vehicle Equipment Limited | Wholesale & retail | 2013 |
| Victoria Retail and Cold Storage Limited | Manufacturing | 2019 |
| Victoria Services (Cornwall) Limited | Real estate | 2017 |
| Viewpoint Kernow Limited | Manufacturing | 2012 |
| Viewpoint North Diving Limited | Wholesale & retail | 2015 |
| Viokos Ltd | Health & social care | 2022 |
| Virtex Ltd | Professional & scientific | 2009 |
| Visible Changes (Exeter) Ltd | Health & social care | 2011 |
| Vital Portal Ltd | Information & communication | 2026 |
| Voltium Tech Ltd | Professional & scientific | 2026 |
| W C Roofing Ltd | Construction | 2014 |
| Wadebridge Construction Co. Limited | Construction | 1982 |
| Waffled Limited | Hospitality | 2023 |
| Walter Hicks Limited | Manufacturing | 2021 |
| Warne's Warehouse Ltd | Wholesale & retail | 2019 |
| Watergate Bay Motorsport Limited | Arts & recreation | 2018 |
| Waterproofing Cornwall Ltd | Construction | 2025 |
| Wattson Properties Ltd | Real estate | 2026 |
| Waypoint RM Ltd | Professional & scientific | 2013 |
| WE Work Spaces Ltd | Professional & scientific | 2023 |
| Wedlake Funeral Home Ltd | Other services | 2023 |
| Wells Heritage Ltd | Extraterritorial | 2024 |
| Wepioneer Limited | Professional & scientific | 2014 |
| West Country Surf School Ltd | Education | 2021 |
| West END Motors (Cornwall) Limited | Wholesale & retail | 2011 |
| West Polberro Developments Ltd | Real estate | 2013 |
| West Polmear Consulting Limited | Mining & quarrying | 2024 |
| West Wharf Management Company Ltd | Households | 2001 |
| Westcolour Holdings Limited | Financial services | 2021 |
| Westcolour Ltd | Administrative & support | 2012 |
| Western Plant Ltd | Wholesale & retail | 2025 |
| Westward Cladding Services Limited | Construction | 2016 |
| Westward Roofing Services Limited | Construction | 2015 |
| Wetherham Kennels Limited | Other services | 2014 |
| Weyring Limited | Real estate | 1964 |
| Wfcg Limited | Other services | 2023 |
| Wheal Martyn Enterprises Limited | Wholesale & retail | 1991 |
| Wheal Martyn Trust | Arts & recreation | 1974 |
| Wheeler Fencing and Landscaping Ltd | Administrative & support | 2025 |
| White Cloud Holdings Ltd | Administrative & support | 2025 |
| White Homes (SW) Limited | Construction | 2021 |
| White House Trading Limited | Wholesale & retail | 1993 |
| White Lion Mews (Langport) Limited | Households | 2023 |
| White River Homecare Ltd | Health & social care | 2016 |
| White Stone Global Limited | Wholesale & retail | 2021 |
| Wild Wonder and Wisdom CIC | Education | 2019 |
| Winchmore House Management Company Limited | Professional & scientific | 2008 |
| Windybeard Ltd | Information & communication | 2026 |
| Wingspan Replicas Limited | Manufacturing | 2025 |
| Withiel Commercials Limited | Wholesale & retail | 2015 |
| WMR Construction Ltd | Construction | 2023 |
| WMR Equipment Ltd | Administrative & support | 2026 |
| Wndi Renewable Energy Ltd | Professional & scientific | 2022 |
| Wolfe Construction Ltd | Construction | 2017 |
| Woven Years Limited | Information & communication | 2025 |
| WRK Trustees Limited | Professional & scientific | 2024 |
| Xenia Events Ltd | Other services | 2025 |
| Yaghus Ltd | Construction | 2024 |
| Yomojo Ltd | Health & social care | 2013 |
| Young People Cornwall | Education | 1989 |
| Zante Red Lane Management Company Limited | Households | 2019 |
| Zest Recruitment Solutions Limited | Administrative & support | 2004 |
| ZOE & JIM Ltd | Wholesale & retail | 2023 |
| ZS Tech LAB Ltd | Other services | 2018 |