| W Harvey & Sons Limited | Manufacturing | 2014 |
| W P M F Ltd | Health & social care | 2016 |
| W- Tech Limited | Construction | 2017 |
| W. Stevenson & Sons Limited | Agriculture & fishing | 1998 |
| Wall Road Limited | Real estate | 2023 |
| Walled Garden & Squirrel Limited | Construction | 2023 |
| Ward Edwards Bloodstock Limited | Agriculture & fishing | 2022 |
| Warren Stevens Decorators Ltd | Construction | 2026 |
| Waterfront Penzance Limited | Administrative & support | 2023 |
| Waterside Meadery Limited | Hospitality | 2007 |
| Waves Gallery Limited | Wholesale & retail | 2015 |
| Way OUT West Microgreens Ltd | Agriculture & fishing | 2021 |
| Wayne Tieken and Associates Limited | Professional & scientific | 2005 |
| WB & Co Property Services Ltd | Real estate | 2024 |
| WDM Marine Limited | Professional & scientific | 2024 |
| WE ARE Amba Limited | Wholesale & retail | 2017 |
| Webb's Ice Cream Ltd | Manufacturing | 2022 |
| Website Consultancy (UK) Limited | Information & communication | 2012 |
| WED Magazine Limited | Information & communication | 2014 |
| West Coast Custom Vans Limited | Wholesale & retail | 2017 |
| West Cornwall Accountants Limited | Professional & scientific | 2022 |
| West Cornwall Brewing Company Limited | Manufacturing | 2025 |
| West Cornwall Cleaning Ltd | Administrative & support | 2022 |
| West Cornwall Construction Management Limited | Construction | 2020 |
| West Cornwall Lugger Industry Trust Ltd | Education | 2005 |
| West Cornwall Motor Club Limited | Arts & recreation | 1974 |
| West Cornwall Pubs Limited | Hospitality | 2025 |
| West Cornwall Removals Ltd | Transport & logistics | 2014 |
| West Cornwall Women's AID | Health & social care | 2003 |
| West END Flats (Goldsithney) Management Limited | Extraterritorial | 2000 |
| West of Eden Limited | Wholesale & retail | 2009 |
| Westcountry Blinds Limited | Manufacturing | 2003 |
| Western Discoveries Limited | Administrative & support | 2008 |
| Westscene Limited | Real estate | 2000 |
| Wetsuit Centre Limited | Extraterritorial | 2024 |
| Wheal Project Ltd | Construction | 2022 |
| Wheel Parade Management Company Limited | Households | 2021 |
| Where the Wild Things ARE Ltd | Health & social care | 2022 |
| Whitelock Limited | Real estate | 2013 |
| Whitlocks Penzance Limited | Real estate | 2013 |
| Whole Again Communities Community Interest Company | Education | 2013 |
| Wicked Tree Ltd | Arts & recreation | 2025 |
| Wide Blue Solutions Ltd | Information & communication | 2015 |
| Wild Art Cornwall CIC | Health & social care | 2010 |
| Wild Associates Limited | Professional & scientific | 1999 |
| Wild Coast Co. Ltd | Wholesale & retail | 2025 |
| Wild Rambling Ltd | Administrative & support | 2012 |
| Wild Soul Blessings Ltd | Arts & recreation | 2019 |
| Wild West Art & Crafts Ltd | Manufacturing | 2011 |
| Wildtrack Automotives Ltd | Information & communication | 2023 |
| Willans Harness Manufacturing Limited | Manufacturing | 1972 |
| Willbern Care Limited | Health & social care | 2013 |
| Williams & Hosking Carpentry Contractors Limited | Construction | 2005 |
| Williams and Webb Fishing Limited | Agriculture & fishing | 2025 |
| Winchester Property Improvements Limited | Construction | 2014 |
| Winning Against Cancer CIC | Information & communication | 2025 |
| WJR Services Ltd | Construction | 2017 |
| WJT Surveying Limited | Professional & scientific | 2020 |
| Wolf Jansen Finance & Advisory Ltd | Administrative & support | 2023 |
| Wolf Jansen Ltd | Administrative & support | 2020 |
| Wolf Properties SW Ltd | Real estate | 2023 |
| Wonderful Thai Limited | Hospitality | 2025 |
| Woodland West Limited | Construction | 2013 |
| Woodsman Creative Limited | Professional & scientific | 2015 |
| Workhubs Network Community Interest Company | Administrative & support | 2012 |
| Worth Considering Ltd | Information & communication | 2024 |
| Wren & Raven Ltd | Manufacturing | 2024 |
| Xilm Media Group Limited | Administrative & support | 2024 |
| Xinc Limited | Construction | 1995 |
| XLD Group Limited | Construction | 2022 |
| Xsoft Information Systems Limited | Information & communication | 1986 |
| Xtend Trading Limited | Financial services | 2013 |
| Xtend Trading NO.2 Limited | Financial services | 2017 |
| Yeung, Sharp & Oliver IT Ltd | Information & communication | 2021 |
| Ymca Cornwall | Hospitality | 1998 |
| Yoga Treat Ltd | Education | 2019 |
| York Technologies Limited | Professional & scientific | 1999 |
| Young Elizabeth Quota Trading Limited | Administrative & support | 2000 |
| Your Face Surgery Limited | Health & social care | 2022 |
| Zencatt Limited | Real estate | 2013 |
| Zenith (PZ) Scaffolding Ltd | Construction | 2022 |
| Zennor Design Limited | Professional & scientific | 2021 |
| Zennor Engine Development Company Ltd | Professional & scientific | 2013 |
| Zennor Investments Limited | Financial services | 2017 |
| Ziar Studio Ltd | Professional & scientific | 2023 |
| Zing Content Ltd | Professional & scientific | 2025 |