| WF Roofing Ltd | Construction | 2024 |
| WFP Trading Limited | Agriculture & fishing | 2024 |
| WGM Developments Ltd | Real estate | 2025 |
| WGP Maintenance Ltd | Construction | 2009 |
| Wharfdale Limited | Construction | 2004 |
| Wheeler Enterprises Limited | Households | 2014 |
| Wheeltec (Plymouth) Limited | Wholesale & retail | 2018 |
| Wheelwright Court Limited | Real estate | 1987 |
| Wheng Ltd | Professional & scientific | 2026 |
| Where Worlds Collide Ltd | Wholesale & retail | 2026 |
| WHI Conservatories Limited | Construction | 2023 |
| WHI Windows Limited | Construction | 2023 |
| Whimbrel Homes Ltd | Real estate | 2017 |
| Whisky Global Ltd | Wholesale & retail | 2011 |
| Whistleblower Trickery Limited | Administrative & support | 2025 |
| Whitaker Holdings Ltd | Financial services | 2018 |
| White Dog Property Investments Limited | Real estate | 2015 |
| White Friar Motor Yacht Ltd | Manufacturing | 2024 |
| White Ice Events Ltd | Other services | 2017 |
| White Jackman Limited | Professional & scientific | 2019 |
| White Knight Automotive Ltd | Wholesale & retail | 2013 |
| White Lane Properties Limited | Households | 1977 |
| White Rose UK Ltd | Hospitality | 2008 |
| White Star Capital United Kingdom Limited | Financial services | 2018 |
| White Viking Holdings Ltd | Financial services | 2023 |
| Whitehills Convenience Ltd | Wholesale & retail | 2015 |
| Whites Auto Ltd | Wholesale & retail | 2025 |
| Whites Autocentre Limited | Manufacturing | 2014 |
| Whitesails Associates Limited | Professional & scientific | 2013 |
| Whitestone Garages Plymouth Limited | Real estate | 2026 |
| Whitfield Estates Ltd | Real estate | 2025 |
| Whitfield Property Ltd | Real estate | 2020 |
| Whitsand Bay Fort Holiday Village Ltd | Hospitality | 2021 |
| Whitsand Safety Limited | Professional & scientific | 2025 |
| Wicked Angel Cheesecakes Limited | Manufacturing | 2011 |
| Widemouth Lock Limited | Real estate | 2025 |
| Wigwam Enterprises Limited | Real estate | 2001 |
| Wiki Traders Limited | Wholesale & retail | 2025 |
| Wild & Smoked Ltd | Hospitality | 2024 |
| Wild Orchard Properties Limited | Real estate | 2024 |
| Wild Paths Ltd | Administrative & support | 2022 |
| Wild Stay Limited | Real estate | 2024 |
| Wild World Safaris Ltd | Administrative & support | 2018 |
| Wildlands Adventure Ltd. | Arts & recreation | 2015 |
| Wildlife-Lodges Limited | Administrative & support | 2014 |
| Wilkins Productions Limited | Administrative & support | 2005 |
| Wilkinson Hardware Stores Limited | Extraterritorial | 2015 |
| Wilko Limited | Extraterritorial | 2015 |
| Wilko Works Ltd | Construction | 2025 |
| Wilko.Com Limited | Professional & scientific | 2019 |
| Will Centre Storage Services Ltd | Other services | 2017 |
| Will Enterprise Ltd | Wholesale & retail | 2025 |
| Willand Group Ltd | Agriculture & fishing | 2016 |
| Willatronix Ltd | Wholesale & retail | 2025 |
| Willbec Fine Art Limited | Transport & logistics | 2025 |
| Willett Construction Limited | Construction | 2012 |
| William Lean Ltd | Real estate | 2024 |
| Williams & SON Electrical Limited | Construction | 2011 |
| Williams Construction (South West) Limited | Construction | 2007 |
| Williams Ice Cream Ltd | Hospitality | 2016 |
| Williams Southern Limited | Construction | 1988 |
| Williams Tattoo Company Ltd | Other services | 2021 |
| Williamsbuild Management Limited | Professional & scientific | 2010 |
| Williamson Capital Ltd | Real estate | 2025 |
| Willismorris Limited | Professional & scientific | 2001 |
| Willow Green Developments Limited | Construction | 2017 |
| Willow Timber Ltd | Wholesale & retail | 2018 |
| Willow Tree Consultancy Limited | Administrative & support | 2022 |
| Wills Accountants Limited | Professional & scientific | 1994 |
| Willson's Commercial Ltd | Real estate | 2026 |
| Wilma Automotive Solutions Ltd | Information & communication | 2022 |
| Wimborne & Novem Ventures Ltd | Financial services | 2026 |
| Winchurch Transport Ltd | Transport & logistics | 2022 |
| Window & Door Maintenance (SW) Ltd | Construction | 2002 |
| Window AID Glazing Ltd | Construction | 2022 |
| Window Gleam Ltd | Administrative & support | 2025 |
| Winds of Time Limited | Real estate | 2024 |
| Wing & SON Powder Coatings Limited | Other services | 2013 |
| Wing Locker Ltd | Wholesale & retail | 2026 |
| Wingfield Mansions Management Limited | Households | 1994 |
| Winglets Limited | Transport & logistics | 2025 |
| Wingman Contracts Limited | Information & communication | 2013 |
| Wingman HQ Limited | Hospitality | 2019 |
| Wingrep Limited | Households | 1983 |
| Winmill Developments Limited | Construction | 2004 |
| Winn Trade and Public DIY Ltd | Wholesale & retail | 2019 |
| Winners Gaming Limited | Arts & recreation | 2003 |
| Winston Bear Limited | Real estate | 2024 |
| Winton House Solutions Ltd | Health & social care | 2024 |
| Wired and Tired Sleep Coach Ltd | Professional & scientific | 2025 |
| Wired Software Ltd | Information & communication | 2012 |
| Wisegameworld Ltd | Manufacturing | 2020 |
| Wisegoats Ltd | Hospitality | 2018 |
| Wisegreenworld Limited | Professional & scientific | 2012 |
| Wisteria House Dementia Care Ltd | Health & social care | 2014 |
| Wisteria House Group Limited | Financial services | 2025 |
| Wisteria House Holdings Limited | Financial services | 2021 |
| Wisteria House Plymstock Limited | Health & social care | 2025 |
| Wisteria House Properties Limited | Real estate | 2022 |
| Wisteria House Stoke Limited | Health & social care | 2025 |