| Evision Automotive Limited | Wholesale & retail | 2024 |
| EVS INT Ltd | Manufacturing | 2013 |
| EVS International Sales Limited | Manufacturing | 2013 |
| EWC Accountants (IOW) Limited | Professional & scientific | 2020 |
| Experience Cowes Limited | Administrative & support | 2025 |
| F W Developments (IW) Limited | Construction | 2004 |
| F8 Consulting Ltd | Information & communication | 2014 |
| Fairey Marine (Hamble) Limited | | 1946 |
| Fenntech IT Ltd | Information & communication | 2016 |
| Finding Joy Ltd | Wholesale & retail | 2025 |
| FIR Tree Rescue Ranch Community Interest Company | Agriculture & fishing | 2026 |
| First Nails Ltd | Other services | 2025 |
| Fit 4 Life Southern Limited | Construction | 2006 |
| Fit for Progress Ltd. | Wholesale & retail | 2018 |
| Fitton Holman Creative Limited | Professional & scientific | 2015 |
| Flashflood Digital Ltd | Information & communication | 2022 |
| Flat Wight Limited | Hospitality | 2024 |
| Flight Matrix Limited | Wholesale & retail | 2025 |
| Flo-Tech (IW) Limited | Construction | 2025 |
| Flock and Hive Ltd | Information & communication | 2023 |
| Fluid Conditioning Services Limited | Manufacturing | 1999 |
| Flying Colours Maritime Ltd | Education | 2022 |
| Flying Fish UK Limited | Education | 1995 |
| Fourthcape Limited | Arts & recreation | 2013 |
| Frances Charles Leisure Limited | Hospitality | 2010 |
| Freedom Property Management Ltd. | Real estate | 2021 |
| Fryer Consulting Ltd | Professional & scientific | 2024 |
| Fryfry Property Ltd | Real estate | 2021 |
| Full Circle Printing Ltd | Wholesale & retail | 2024 |
| G & V Hawkins Limited | Wholesale & retail | 2009 |
| G Bates Services Limited | Administrative & support | 2018 |
| G Fifty Ltd | Manufacturing | 2017 |
| G.J. Banks (I.W.) Limited | Construction | 1981 |
| Garage Inc. (IOW) Limited | Arts & recreation | 2012 |
| George Digital UK 1 Limited | Financial services | 2017 |
| George Digital UK 2 Limited | Financial services | 2017 |
| Gifty Gadgety Ltd | Wholesale & retail | 2013 |
| Girl Boss Travel Ltd | Administrative & support | 2022 |
| Globalshots Media Ltd. | Other services | 2012 |
| GM Screening Ltd | Other services | 2023 |
| Golf on the Green Ltd | Wholesale & retail | 2013 |
| Granville 48 Limited | Households | 2017 |
| Gravy Post Ltd | Information & communication | 2014 |
| Green Alma Project Ltd | Professional & scientific | 2024 |
| Green Getaways IOW Ltd | Hospitality | 2025 |
| Green Marshall Ltd | Construction | 2021 |
| Greville Inventories LLP | | 2006 |
| Greymouth Limited | Administrative & support | 2007 |
| Greys Matter Limited | Administrative & support | 2019 |
| Griffin Precision CNC Limited | Manufacturing | 2023 |
| Grounded Coffee IOW Ltd | Hospitality | 2025 |
| Grow Gurnard CIC | Agriculture & fishing | 2024 |
| Gurnard Pre-School | Education | 2010 |
| Gurnard Press Bistro Ltd | Hospitality | 2023 |
| H2H Productions Ltd | Arts & recreation | 2026 |
| Hainesea Ltd | Professional & scientific | 2023 |
| Hamish Wilson Consulting Ltd | Professional & scientific | 2018 |
| Hamlings Limited | Professional & scientific | 2020 |
| Harley Brothers Ltd | Construction | 2025 |
| Harley Haversack Ltd | Manufacturing | 2023 |
| Harper Mather Limited | Manufacturing | 2010 |
| Hawk Properties Limited | Construction | 2018 |
| Hawk Structures Southern Ltd | Financial services | 2009 |
| Hayes Residents Association Limited | Real estate | 2012 |
| Heart of Cumberland Ltd. | Construction | 2012 |
| Henry Moore Trading Limited | Other services | 2024 |
| Herd Footwear Ltd | Wholesale & retail | 2025 |
| HGR Logistics Limited | Transport & logistics | 2025 |
| Hicks Kearney Limited | Hospitality | 2017 |
| Hillbans Pest Control Limited | Administrative & support | 2002 |
| Hite Ltd | Information & communication | 2010 |
| Hive IOW Limited | Real estate | 2019 |
| Hive Media Group Ltd | Professional & scientific | 2019 |
| Hive Opco Ltd | Real estate | 2020 |
| Hivezen Ltd | Information & communication | 2020 |
| HM Tiling (IW) Limited | Construction | 2024 |
| Hoffman Knight Group Limited | Administrative & support | 2025 |
| House of Aura Events Limited | Administrative & support | 2025 |
| Howedetailed Ltd | Arts & recreation | 2025 |
| Hull Raiser Ltd | Professional & scientific | 2010 |
| Humberside Services Limited | Professional & scientific | 1963 |
| Hummingbird Hawkmoth Limited | Extraterritorial | 2019 |
| Hurst (UK) Limited | Administrative & support | 2006 |
| I F Mackinnon & Company LLP | | 2002 |
| I F Mackinnon Capital Ltd | Professional & scientific | 2007 |
| I.W. Home Rentals Limited | Real estate | 2006 |
| Illovy Properties Limited | Real estate | 1959 |
| Illovy Property Holdings Limited | Professional & scientific | 2006 |
| Imagineplaces Ltd | Professional & scientific | 2010 |
| Impact Counsel Ltd | Professional & scientific | 2021 |
| Impress Travel (One) Ltd | Administrative & support | 2026 |
| Incontactmarketing Ltd | Information & communication | 2026 |
| Indefatigable Ventures Limited | Professional & scientific | 2024 |
| Indigo Blew Limited | Construction | 2013 |
| Indigo Gray Limited | Transport & logistics | 2012 |
| Indigo Greene Limited | Construction | 2016 |
| Indigo Pirple Limited | Construction | 2017 |
| Indigo Pynk Limited | Real estate | 2015 |
| Indigo Wight Ltd | Real estate | 2018 |
| Inferno Spark Ltd. | Information & communication | 2016 |