| Wight Horse CIC | Education | 2017 |
| Wight Ices Limited | Hospitality | 2011 |
| Wight Kitchen Ventilation Services Limited | Professional & scientific | 2013 |
| Wight Knights Ltd | Financial services | 2021 |
| Wight Locum Limited | Health & social care | 2010 |
| Wight Materials Handling Limited | Administrative & support | 2008 |
| Wight Mortgages Ltd | Financial services | 2009 |
| Wight Music Tuition Co-Operative Limited | Education | 2016 |
| Wight Noise Limited | Professional & scientific | 2010 |
| Wight Ocean Ltd | Professional & scientific | 2019 |
| Wight Private EYE Care Limited | Health & social care | 2012 |
| Wight Residential Limited | Real estate | 2021 |
| Wight Sentinel Security Ltd | Administrative & support | 2025 |
| Wight Services Limited | Administrative & support | 2015 |
| Wight Shed Ltd | Wholesale & retail | 2026 |
| Wight Stonemasonry Limited | Other services | 2003 |
| Wight Tasks Ltd | Administrative & support | 2026 |
| Wight TCG Ltd | Wholesale & retail | 2025 |
| Wight Training Ltd | Other services | 2011 |
| Wight Tyres Ryde Ltd | Wholesale & retail | 2022 |
| Wight Vending Ltd | Hospitality | 2014 |
| Wight Vets Ltd | Professional & scientific | 2021 |
| Wight Viking Safety Services Ltd | Professional & scientific | 2026 |
| Wight Way Limited | Construction | 2019 |
| Wight Wellness Ltd | Health & social care | 2022 |
| Wight-Eco Clean Ltd. | Administrative & support | 2014 |
| Wightguide Limited | Hospitality | 2024 |
| Wightlife Group Limited | Construction | 2021 |
| Wightlife Investments Limited | Construction | 2024 |
| Wightlife Newport Limited | Real estate | 2024 |
| Wightlife Properties Limited | Real estate | 2024 |
| Wightlife Residential Limited | Real estate | 2025 |
| Wightstone Tyres Ltd | Wholesale & retail | 2025 |
| Wightwater Sailing LLP | | 2007 |
| Wigwam Publishing Services Limited | Information & communication | 2009 |
| Wilby Medical Limited | Health & social care | 2017 |
| Wild Heart Woodland Therapy CIC | Health & social care | 2026 |
| Wild Heirloom Ltd | Other services | 2023 |
| Wild Oak Farm IOW Ltd | Agriculture & fishing | 2022 |
| Wild Parrot Limited | Professional & scientific | 2022 |
| Wild Rocket Consulting Limited | Professional & scientific | 2019 |
| Wild Wight Glamping Limited | Hospitality | 2020 |
| Wildcat Classic Scooters Ltd | Wholesale & retail | 2021 |
| Wilkinson Wind Ltd | Construction | 2026 |
| Wilks Acquisitions Ltd | Real estate | 2026 |
| Will Horwell Limited | Information & communication | 2018 |
| Will Jones Electrical Ltd | Construction | 2019 |
| Will Stuart Promotions Ltd | Arts & recreation | 2020 |
| Will YAP Properties Ltd | Households | 2022 |
| William Parkman & Daughters Limited | Financial services | 2005 |
| William Shapland & Sons Ltd | Wholesale & retail | 1999 |
| Williams & Sons Properties Limited | Real estate | 2013 |
| Williams Chard Property Ltd | Real estate | 2024 |
| Williams Corporation Limited | Manufacturing | 2025 |
| Williams Financial Solutions Ltd | Financial services | 2014 |
| Williams Property Management Limited | Real estate | 2022 |
| Willington Power Limited | Financial services | 2016 |
| Willis EBO Holdings Ltd | Financial services | 2023 |
| Wilmer Smile Ltd | Health & social care | 2026 |
| Wilmington Heights Freehold Limited | Real estate | 2017 |
| Wilmington Heights Management Company Limited | Households | 2007 |
| Wilsher Property Holdings Ltd | Real estate | 2025 |
| Wilson Remediation Limited | Professional & scientific | 2013 |
| WIN Financial Limited | Financial services | 2022 |
| WIN WIN Property Solutions Limited | Administrative & support | 2013 |
| Winard Plumbing & Heating Limited | Construction | 2022 |
| Winchester Apartments Ltd | Hospitality | 2020 |
| Winchester Close (NO.1) Management Company Limited | Extraterritorial | 2005 |
| Windd Ltd | Professional & scientific | 2026 |
| Windiamond Ltd | Other services | 2023 |
| Winding Snake Productions | Information & communication | 2011 |
| Windmill Hotels Limited | Hospitality | 1999 |
| Window & Door DOC Limited | Construction | 2023 |
| Window FIX Trade Ltd | Manufacturing | 2024 |
| Windward Blades Ltd | Manufacturing | 2023 |
| Windward Construction (UK) Ltd | Construction | 2025 |
| Wingsify Ltd | Hospitality | 2023 |
| Winnett Group Ltd | Arts & recreation | 2025 |
| Winter Summer Flowers Ltd | Hospitality | 2026 |
| Winwood Products Limited | Wholesale & retail | 2012 |
| Wisebull Consultancy Services Ltd | Professional & scientific | 2025 |
| Wiselinkspublishing Ltd | Information & communication | 2026 |
| Wish Hair Design Limited | Other services | 2009 |
| Wishing Well Close Management Company (IW) Limited | Households | 2025 |
| Wishtide Technologies Ltd | Information & communication | 2025 |
| WIT Technology Ltd | Wholesale & retail | 2025 |
| Without Panic Ltd | Information & communication | 2019 |
| WITHU365 Care Ltd | Health & social care | 2026 |
| Wizard Eco Limited | Construction | 2022 |
| Wizprop Limited | Financial services | 2024 |
| Wizsco Limited | Construction | 2024 |
| Wiztop Limited | Financial services | 2024 |
| WJ13 Ltd | Arts & recreation | 2022 |
| WJA Clinical Ltd | Health & social care | 2022 |
| Wjmason Limited | Construction | 2017 |
| WJW Van & Truck Rental Limited | Extraterritorial | 2011 |
| WM Legal & Associates Limited | Professional & scientific | 2019 |
| WMH Capital Limited | Financial services | 2024 |
| WMJ Services Ltd | Construction | 2015 |
| WMS Retail Ltd | Wholesale & retail | 2018 |