| Bayliss Management Ltd | Professional & scientific | 2021 |
| Bdatai Ltd | Professional & scientific | 2024 |
| Beach Runner Limited | Administrative & support | 2011 |
| Bear of Britain Limited | Arts & recreation | 2001 |
| Beau Couture Bridal Limited | Wholesale & retail | 2025 |
| Bebetteriow C.I.C. | Arts & recreation | 2025 |
| Beetroot Juice Ltd | Financial services | 2018 |
| Bella Grace Design Ltd | Professional & scientific | 2023 |
| Bella IOW Ltd | Hospitality | 2024 |
| Bellingham Services Ltd | Professional & scientific | 2024 |
| Bembridge Consulting Limited | Information & communication | 2011 |
| Bembridge Garage Limited | Wholesale & retail | 2007 |
| Bembridge Harbour Improvements Company Limited | Arts & recreation | 1962 |
| BEN DHU Management Company Limited | Real estate | 1999 |
| Berryhurst & Associates Ltd. | Professional & scientific | 2022 |
| Berts Motorcycles Ltd | Wholesale & retail | 2021 |
| BHR(2025) Limited | Professional & scientific | 2015 |
| BI3 Labs Ltd | Information & communication | 2026 |
| Big Blue Developments Holdings Limited | Real estate | 2018 |
| Big Blue Homes Ltd | Real estate | 2016 |
| Big IOW Limited | Professional & scientific | 2013 |
| Binstead Management Limited | Extraterritorial | 2005 |
| Bioquatic Solutions Ltd | Wholesale & retail | 2022 |
| Black and White Motorways Limited | Transport & logistics | 2024 |
| Black and Wight Limited | Manufacturing | 2020 |
| Black Arts PR Limited | Professional & scientific | 2014 |
| Black Pepper Corns Ltd | Wholesale & retail | 2025 |
| Bladetechnics Limited | Construction | 2015 |
| Blake Nash Visuals Ltd | Manufacturing | 2018 |
| Blanchard Chiropractic Limited | Public administration | 2024 |
| Bliss Hairdressing (I.O.W.) Limited | Other services | 2005 |
| Block Recruit Ltd | Administrative & support | 2014 |
| Block Recruit Site Staff Ltd | Administrative & support | 2022 |
| Blue Giraffe Services Ltd | Transport & logistics | 2019 |
| Blue NET Tech Ltd | Information & communication | 2023 |
| Bluelark Limited | Construction | 1998 |
| Bluerock Accounting Limited | Professional & scientific | 2011 |
| Boatridz Limited | Professional & scientific | 2016 |
| Bobby Ball Marine Ltd | Manufacturing | 2016 |
| Boon Services Limited | Professional & scientific | 2024 |
| Bouchic Limited | Wholesale & retail | 2006 |
| Boundin' Hounds | Other services | 2025 |
| Bowater Crombie Ltd | Real estate | 2005 |
| Boynton Brothers Limited | Real estate | 1969 |
| Brade Management Ltd | Hospitality | 2018 |
| Brading Experience Property Management Company Limited | Households | 2022 |
| Brandnewsmile Ltd | Health & social care | 2024 |
| Bransgroves Mortgage Brokers Ltd | Financial services | 2019 |
| Brimstone Create Limited | Information & communication | 2012 |
| Bristow Brick Limited | Manufacturing | 1998 |
| Bristow Film/Media Production Ltd | Information & communication | 2017 |
| Bristow Fitness Sales Ltd | Wholesale & retail | 2025 |
| Bronte House (1995) Management Company Limited | Households | 1995 |
| Brookson (5367L) Limited | Administrative & support | 2007 |
| Brown CON Ltd | Construction | 2018 |
| Brown Leisure Limited | Arts & recreation | 1999 |
| Bspoke Wheels Ltd | Wholesale & retail | 2021 |
| Bthechange Theatre Community Interest Company | Administrative & support | 2025 |
| Buckingham Road (Isle of Wight) Management Company Limited | Administrative & support | 1989 |
| Buckingham Villa RTM Company Ltd | Households | 2022 |
| Budgie Print Ltd | Manufacturing | 2025 |
| Buds and Blooms Isle of Wight Limited | Wholesale & retail | 2025 |
| Burch Consultancy Limited | Professional & scientific | 2017 |
| Buy My Boat Ltd | Administrative & support | 2025 |
| Bymoor Investments Ltd | Real estate | 2025 |
| C & D Holdings Ltd | Financial services | 2022 |
| C & K Laboratories Limited | Health & social care | 2007 |
| C Deacon Limited | Professional & scientific | 2014 |
| C Jays Laundrette Ltd | Other services | 2019 |
| C Stretch Electrical & Carpentry Ltd | Construction | 2019 |
| Caduceus Medical Limited | Education | 2023 |
| Calibre Building Contractor Ltd | Construction | 2012 |
| Callum Moody Blade Repair Services Ltd | Education | 2026 |
| Camikaze Fitness Limited | Arts & recreation | 2014 |
| Canyouspend Tech Holdings Ltd | Manufacturing | 2025 |
| Capital Marine Services (UK) Limited | Professional & scientific | 2007 |
| Carabos Ltd | Construction | 1998 |
| Carbon Strategic Consulting Ltd | Professional & scientific | 2015 |
| Care in the Garden CIC | Agriculture & fishing | 2012 |
| Carlton Developments (IOW) Ltd | Real estate | 2021 |
| Carlton Holdings (IOW) Ltd | Professional & scientific | 2021 |
| Carlton Property (IOW) Ltd | Real estate | 2021 |
| Caryn March Accountants Limited | Professional & scientific | 2009 |
| Castle Inn (Isle of Wight) Ltd | Hospitality | 2023 |
| Caulkhead Events CIC | Administrative & support | 2025 |
| CCJ Composites Limited | Manufacturing | 2023 |
| Ceyreste Performance Ltd | Professional & scientific | 2021 |
| Challen Building & Renovations Limited | Construction | 2004 |
| Charrianna Limited | Hospitality | 2014 |
| Chase Horizons Ltd | Professional & scientific | 2015 |
| Chatterbox Nursery Ltd | Education | 2010 |
| Cheal Properties Limited | Hospitality | 2023 |
| CHI CHI Hair and Beauty Limited | Other services | 2015 |
| Childcare by Rosie Ltd | Other services | 2025 |
| Children ACT Enterprises Limited | Professional & scientific | 2002 |
| Choice Carpet and Furnishings Limited | Wholesale & retail | 2014 |
| Chris Evans Windows Limited | Construction | 2022 |
| CJH Logistics Ltd | Transport & logistics | 2025 |
| CJL IOW Limited | Hospitality | 2024 |
| Clarke and Dobson Ventures Ltd | Real estate | 2025 |