| UK Power Rentals Limited | Manufacturing | 2025 |
| Utility Access Hire Limited | Manufacturing | 2016 |
| Vectis Agents Ltd | Real estate | 2015 |
| Vectis Development Properties Limited | Real estate | 2017 |
| Vectis Holdings Limited | Arts & recreation | 1981 |
| Vectis OD Limited | Professional & scientific | 2018 |
| Vectis Omnibus Company Ltd | Transport & logistics | 2010 |
| Vectis Spirits Ltd | Manufacturing | 2026 |
| Vectis Transport Ltd | Transport & logistics | 2010 |
| Vectis Underground Productions CIC | Education | 2025 |
| Vectis Vacuums Limited | Administrative & support | 2020 |
| Vehicle Test Centre (Bromley) Limited | Wholesale & retail | 1967 |
| Ventnor Arts Club Ltd | Hospitality | 2012 |
| Ventnor Botanic Garden Community Company C.I.C. | Agriculture & fishing | 2012 |
| Ventnor Cricket Club Limited | Arts & recreation | 2010 |
| Ventnor Cricket Club Trading Limited | Arts & recreation | 2006 |
| Ventnor Exchange CIC | Arts & recreation | 2018 |
| Ventnor Exchange Trading Company Limited | Arts & recreation | 2013 |
| Ventnor Golf Club (1892) Limited | Arts & recreation | 2014 |
| Ventnor Haven Fishery Ltd | Agriculture & fishing | 2020 |
| Ventnor Haven Management Ltd | Real estate | 2022 |
| Ventnor Local CIC | Information & communication | 2024 |
| Viewpraise Limited | Wholesale & retail | 1991 |
| W&H Property Investments Ltd | Real estate | 2025 |
| Watchbasic Limited | Wholesale & retail | 1991 |
| Watchfront Limited | Information & communication | 1989 |
| Wave Industrial Developments Ltd | Construction | 2024 |
| WE3 Create Limited | Information & communication | 2011 |
| Wellington Events Ltd | Hospitality | 2024 |
| West EGG Estates Ltd | Real estate | 2024 |
| Wheatley Property SPV Ltd | Real estate | 2025 |
| Whistle 1969 Limited | Extraterritorial | 2013 |
| White Horse Inn IOW Ltd | Hospitality | 2023 |
| Whitwell Field Ltd | Financial services | 2021 |
| Wight Contractors Limited | Construction | 2020 |
| Wight Event Power Ltd | Administrative & support | 2023 |
| Wight Gardening Services Ltd | Administrative & support | 2025 |
| Wight Hot Heating Limited | Construction | 2023 |
| Wight Hypnotherapy Ltd | Health & social care | 2015 |
| Wight Mouse Ltd | Hospitality | 2014 |
| Wight Squirrel Ltd | Wholesale & retail | 2025 |
| Wightwashed Ltd | Administrative & support | 2015 |
| Wild Roots IW CIC | Education | 2024 |
| Wilton Engineering Solutions Limited | Professional & scientific | 2019 |
| Woden Investments Limited | Real estate | 2022 |
| Wolfie Traffic Enforcement Consultancy Ltd | Professional & scientific | 2025 |
| Wollescote (Ventnor) Management Company Limited | Extraterritorial | 1988 |
| Wonderfell Theatre Company Ltd | Education | 2026 |
| Writing ELT Materials Ltd | Education | 2023 |
| Wroxall Avenue Road Limited | Other services | 1997 |
| Wynn Sigel Ltd | Manufacturing | 2017 |
| Yarborough Court (Ventnor) Limited | Households | 1981 |
| Yarborough Homes Limited | Construction | 2013 |