| THE Old Smithy Management Company Limited | Households | 2007 |
| THE Soma Room Ltd | Other services | 2017 |
| THE Wight PUB Company Limited | Hospitality | 2011 |
| THE Wildheart Trust | Arts & recreation | 2016 |
| THE Wildheart Trust Trading Limited | Wholesale & retail | 2012 |
| THE Yoga in Health Care Alliance Ltd | Administrative & support | 2017 |
| Thirsty Bear Software Limited | Information & communication | 2005 |
| Thistle Design Associates Limited | Construction | 2003 |
| Tick Doodle Ltd | Information & communication | 2019 |
| Tide NOR Time Players CIC | Arts & recreation | 2023 |
| TIN2BLING Ltd | Water & waste | 2022 |
| Tjinc Ltd | Hospitality | 2025 |
| TJS Developments (IW) Limited | Wholesale & retail | 2007 |
| Tmfc Investments Limited | Financial services | 2016 |
| Tmfc Solutions Limited | Transport & logistics | 2014 |
| Toogood Inventories Ltd | Administrative & support | 2019 |
| Top Gear Vehicle Rentals Ltd | Administrative & support | 2007 |
| Top Mops Limited | Administrative & support | 2012 |
| Total Electrical Supplies (IOW) Limited | Wholesale & retail | 2014 |
| Trabus Limited | Information & communication | 2007 |
| Triad Advisory Limited | Professional & scientific | 2021 |
| Triumph Electrical Ltd | Construction | 2024 |
| Tsamota Criminal Evidence Solutions Limited | Professional & scientific | 2015 |
| Tsamota Limited | Professional & scientific | 2006 |
| Tyre Channel Limited | Wholesale & retail | 2013 |
| UK KK Properties Ltd | Real estate | 2024 |
| UK Wide Transport Ltd | Other services | 2024 |
| Unique Windows I.O.W. Limited | Manufacturing | 2013 |
| Upstairs Downstairs (IW) Ltd | Wholesale & retail | 2014 |
| Upward Frog Yoga Ltd | Education | 2018 |
| Vdubusuk Ltd | Professional & scientific | 2026 |
| Vectis 199 Limited | Information & communication | 2003 |
| Vectis 494 Limited | Information & communication | 2006 |
| Vectis 642 Limited | Information & communication | 2010 |
| Vectis 681 Limited | Other services | 2011 |
| Vectis Autos Limited | Wholesale & retail | 2020 |
| Vectis Twenty SIX Limited | Information & communication | 2002 |
| Veda Embodied Yoga Teacher Training Ltd | Education | 2025 |
| Venture to Success Limited | Professional & scientific | 2013 |
| Vision to Success Limited | Professional & scientific | 2025 |
| Viv's Cooking Ltd | Hospitality | 2022 |
| VSS Datacom Limited | Information & communication | 2023 |
| Wallwind Composites Ltd | Manufacturing | 2026 |
| WBI Estate Ltd | Financial services | 2020 |
| WE Install Stuff Limited | Manufacturing | 2012 |
| West Wight Mini Skips Limited | Water & waste | 2002 |
| Westbay Engineers Limited | Information & communication | 1989 |
| Westbrook Electrical Limited | Construction | 2002 |
| Whitefield Consulting LLP | | 2006 |
| Whitefield Nominees Limited | Financial services | 1997 |
| Whitefield Tax Limited | Professional & scientific | 2001 |
| Whitefield Websites LLP | | 2024 |
| Whitehouse & Porter Limited | Real estate | 2011 |
| WHO One Limited | Wholesale & retail | 2005 |
| Wicks at 26 Limited | Hospitality | 2024 |
| Wight Accommodation Ltd | Hospitality | 2025 |
| Wight Accounting and Payroll Services Limited | Professional & scientific | 2022 |
| Wight Art Adventure Limited | Professional & scientific | 2025 |
| Wight BIN Cleaning Ltd | Administrative & support | 2026 |
| Wight Fire Doors Limited | Other services | 2019 |
| Wight Knuckle Brewery Ltd | Manufacturing | 2021 |
| Wight Laundry Services Limited | Other services | 2023 |
| Wight Oak Youth Services Limited | Health & social care | 2026 |
| Wight Print (IOW) Ltd | Manufacturing | 2020 |
| Wight Test Engineering Services Ltd | Professional & scientific | 2025 |
| Wightbnb Limited | Hospitality | 2019 |
| Wightoak Ltd | Hospitality | 2021 |
| Wilderness Holdings Ltd | Financial services | 2017 |
| Wildwood Bespoke Carpentry Ltd | Manufacturing | 2024 |
| Wilkinsons Pies IOW Ltd | Hospitality | 2025 |
| William Hall Independent Funeral Directors Limited | Other services | 2013 |
| Williams Land Surveying Ltd | Professional & scientific | 2015 |
| Willmore Interiors Ltd | Construction | 2025 |
| Wilson Property & Cleaning Services Ltd | Administrative & support | 2025 |
| Winford Micro Design Limited | Information & communication | 2000 |
| Winford Park Residents Association Limited | Households | 1977 |
| With a Difference Group Ltd | Administrative & support | 2022 |
| Work Threads (IOW) Embroidery Limited | Manufacturing | 2025 |
| Wyldsfire Circus Productions Ltd | Professional & scientific | 2025 |
| Yates IOW Brewery Limited | Manufacturing | 2005 |
| Yeet Solutions Ltd | Extraterritorial | 2024 |
| YES! Creative Beats CIC | Health & social care | 2023 |
| Yetton & Yetton Ltd | Other services | 2023 |
| Yiha Training Limited | Administrative & support | 2020 |
| Yinspire Limited | Professional & scientific | 2026 |
| Yinspire Yoga Therapy LLP | | 2022 |
| Yoga With MEG Ltd | Other services | 2019 |
| Yogalates London CPD UK Ltd | Education | 2025 |
| Zephyr Yoga Limited | Education | 2021 |
| ZLE Limited | Construction | 2023 |
| Zodiac Design and Films Limited | Construction | 1999 |