| 123 ST. James Street Management Company Limited | Real estate | 2007 |
| 24/7 Recovery (IW) Limited | Professional & scientific | 2019 |
| 3D Change Management Limited | Information & communication | 2020 |
| 47 Aynhoe Road Management Limited | Households | 2006 |
| 47 High Street Management Company Limited | Real estate | 2018 |
| A Cabs Isle of Wight Ltd | Transport & logistics | 2023 |
| A E Clark Toys (Isle of Wight) Limited | Real estate | 1977 |
| A Jones Plumbing & Heating Limited | Construction | 2024 |
| A Taste of Cyprus Ltd | Hospitality | 2020 |
| A. & M.A. Robinson Seaview Services Limited | Transport & logistics | 1939 |
| Abbotts Flooring (IOW) Limited | Wholesale & retail | 2007 |
| Acorn Care Service Ltd | Health & social care | 2003 |
| Acppg Ltd | Health & social care | 2023 |
| Acrylicraft Ltd | Wholesale & retail | 2011 |
| AD HOC Marine Designs Ltd | Professional & scientific | 2008 |
| ADA Composites Ltd | Professional & scientific | 2026 |
| Aero Design Solutions Limited | Professional & scientific | 2008 |
| Ahmed Coen Limited | Wholesale & retail | 2025 |
| AJ Building IOW Ltd | Construction | 2023 |
| Alabaster Building Services Limited | Construction | 2003 |
| ALL Seasons Topsoil & Waste Limited | Administrative & support | 2016 |
| Allen Electrical Services Limited | Construction | 1998 |
| Allsorts Swimming Club IOW CIC | Arts & recreation | 2025 |
| ALS Travel Limited | Transport & logistics | 2018 |
| Alvas Consulting Ltd | Information & communication | 2011 |
| Amanda White Communications Ltd | Professional & scientific | 2024 |
| Amarinda Consulting Limited | Information & communication | 2001 |
| Ambush Activities Limited | Arts & recreation | 2002 |
| AMZ Associates Limited | Information & communication | 2001 |
| Andy's Building Contractors Limited | Construction | 2025 |
| Animals at Home (Sandown I.O.W.) Limited | Professional & scientific | 2025 |
| Annexure Ltd | Real estate | 2021 |
| Antelope Asset Management Ltd | Financial services | 2025 |
| Antelope Consulting Ltd | Information & communication | 2004 |
| Antelope Technologies Ltd | Information & communication | 2021 |
| Apse Heath Methodist Church Hall Residents Management Company Limited | Households | 2018 |
| ARC Biodiversity and Climate Ltd | Professional & scientific | 2013 |
| Areley Kings Dental Products Limited | Real estate | 2022 |
| Arid Design Ltd. | Professional & scientific | 2012 |
| ARK RF Systems Ltd | Professional & scientific | 2025 |
| Arnold House Brading Isle of Wight LLP | | 2006 |
| Arora Business Consulting Group Ltd | Administrative & support | 2021 |
| Arson Fire Limited | Manufacturing | 2019 |
| Artecology Ltd | Professional & scientific | 2015 |
| Ascend Procurement Ltd | Wholesale & retail | 2025 |
| Ashby Group Limited | Hospitality | 2023 |
| Ashengrove Old Dairy Barn Storage Ltd | Other services | 2025 |
| Ashengrove Old Dairy Container Storage Ltd | Other services | 2025 |
| Asknott IAM Services Ltd | Information & communication | 2018 |
| Asta Rentals Ltd | Real estate | 2026 |
| Aurora Massage and Holistic Therapy by Kara Ltd | Health & social care | 2026 |
| Authentigait Ltd | Manufacturing | 2017 |
| AV8 Europe Limited | Hospitality | 2014 |
| Avenue Retails Limited | Wholesale & retail | 2025 |
| Bablades Ltd | Manufacturing | 2023 |
| Ballers Jewellers Limited | Wholesale & retail | 2024 |
| Barefoot Body Training Limited | Education | 2018 |
| Barne & Storm Ltd | Professional & scientific | 2017 |
| Barnes Quinn Consulting Ltd | Information & communication | 2014 |
| Barnes Quinn Investments Limited | Professional & scientific | 2015 |
| Bashan & Cotton Limited | Arts & recreation | 2018 |
| Bayhouse (IOW) 2 Management Company Limited | Households | 2023 |
| Bayleaf (Lake) Limited | Hospitality | 2020 |
| Berry Electrical Limited | Construction | 2000 |
| Biomass 1ST Limited | Construction | 2014 |
| Blue Bird Bedford Limited | Other services | 2014 |
| Blue Lights on Wight CIC | Hospitality | 2025 |
| Blue OWL Limited | Information & communication | 2008 |
| Bluebelle Consulting Limited | Information & communication | 2006 |
| Boardwalk Cafe Ltd | Hospitality | 2025 |
| BOK Renovations Limited | Construction | 2025 |
| Boojum and Snark Limited | Wholesale & retail | 2019 |
| Bowfell Developments Limited | Information & communication | 1998 |
| Brading Geoscience Limited | Professional & scientific | 2013 |
| Brading Roman Villa Trading Ltd | Arts & recreation | 2015 |
| Breathe Limited | Other services | 2000 |
| Brett & Co Incorporated Limited | Professional & scientific | 2014 |
| Brew Bros Ltd | Manufacturing | 2019 |
| Bright Bloq Ltd | Extraterritorial | 2022 |
| Brightbulb Design Limited | Information & communication | 2014 |
| Broadway Car Sales Ltd | Wholesale & retail | 2020 |
| Brodies Bodyshop Ltd | Wholesale & retail | 2021 |
| Bruce Design Limited | Professional & scientific | 2006 |
| BTC Support Limited | Information & communication | 2023 |
| Bump Express Limited | Wholesale & retail | 2016 |
| Burchell Marketing Limited | Professional & scientific | 2025 |
| Bureau Card Limited | Administrative & support | 2000 |
| Byron Ford Ltd | Financial services | 2017 |
| C M Audio Ltd | Information & communication | 2011 |
| C Rackett Ltd | Construction | 2015 |
| C T Garden Services Ltd | Administrative & support | 2012 |
| Cafe Aroma Limited | Hospitality | 2023 |
| Callvendale House Management Co Limited | Households | 1987 |
| CAP Consultancy (IOW) Limited | Professional & scientific | 2023 |
| CAP Property Development IOW Limited | Construction | 2019 |
| CAP Property Management Limited | Real estate | 2017 |
| CAP Trading (IOW) Limited | Real estate | 2023 |
| Card Basic Limited | Professional & scientific | 2004 |
| Carnold Autos Ltd | Wholesale & retail | 2025 |
| Casa IOW Ltd | Real estate | 2026 |