| Gilkicker Fort Southern Group Ltd | Construction | 2025 |
| Gilkicker Fort Southern Ltd | Construction | 2025 |
| GK Property Limited | Real estate | 2015 |
| GKT Bookkeeping Services Limited | Professional & scientific | 2022 |
| Gl&I Ltd | Real estate | 2024 |
| Glide Capital Partners Ltd | Agriculture & fishing | 2025 |
| Glider and Blue Motor Services Limited | Administrative & support | 1929 |
| GMF Limited | Professional & scientific | 2019 |
| Goose and Gosling Ltd | Professional & scientific | 2022 |
| Gordon Windsor Properties Limited | Manufacturing | 1983 |
| Gosden Property Ltd | Real estate | 2020 |
| Gosden Storage Emsworth Limited | Transport & logistics | 2023 |
| Gray Properties & Investments Limited | Real estate | 2024 |
| Green Emsworth Ltd | Construction | 2022 |
| Green Landscapes (Southern) Ltd | Extraterritorial | 2012 |
| Green Surface Clean Limited | Professional & scientific | 2014 |
| Grove Road South Limited | Real estate | 2015 |
| GS Developments (Southern) Limited | Construction | 2008 |
| GSC Flooring Ltd | Wholesale & retail | 2022 |
| Guillens K&B Ltd | Construction | 2026 |
| GUY James Property Investments Ltd | Real estate | 2018 |
| Guyver Bioboosted Ltd | Wholesale & retail | 2026 |
| H H Solutions (2015) Ltd | Information & communication | 2015 |
| H.T.H. Investments Limited | Administrative & support | 1982 |
| Hants & West Sussex Wealth Management Limited | Administrative & support | 2009 |
| Hants Bars Limited | Hospitality | 2015 |
| Harbour Curtains & Blinds Limited | Manufacturing | 2017 |
| Harbour Oysters Ltd | Professional & scientific | 2025 |
| Harbour Reach Emsworth Limited | Households | 2022 |
| Harbour Watch Ltd | Manufacturing | 2025 |
| Hargreaves Finance Limited | Information & communication | 2026 |
| Harmonie Makers of Fine Jewellery Limited | Wholesale & retail | 2004 |
| Harry Treagust Limited | Wholesale & retail | 2019 |
| Harvey Fairoaks Limited | Construction | 2018 |
| Haven Group Hampshire Limited | Construction | 2025 |
| Hawke Property Services Limited | Construction | 2016 |
| Hawke Realty Limited | Real estate | 2020 |
| Hayling Properties Limited | Real estate | 2002 |
| Haylock & Pittman Limited | Construction | 2003 |
| HD Living Group Limited | Wholesale & retail | 2020 |
| HD Scaffolding Limited | Construction | 2017 |
| Helix Electrical Limited | Construction | 2020 |
| Helpbud Limited | Health & social care | 2025 |
| Helyer Davies Architects Ltd | Professional & scientific | 2003 |
| Hentys Corporate Limited | Information & communication | 2013 |
| Hermitage Maintenance Limited | Construction | 2016 |
| Hesperides Fragrance Ltd | Manufacturing | 2025 |
| Highfield GAS & Plumbing Services Limited | Construction | 2007 |
| Himani & Sewani Limited | Real estate | 2025 |
| Hither Green (Southbourne) Management Co. Ltd | Households | 1997 |
| Hoot Marketing Ltd | Professional & scientific | 2010 |
| Horlock Renovations Ltd | Real estate | 2024 |
| Horse Racing Enterprises Limited | Manufacturing | 2003 |
| Host by the Coast Ltd | Hospitality | 2023 |
| HR Service Consulting Ltd | Administrative & support | 2016 |
| Hulme and Sons Limited | Manufacturing | 2021 |
| I Love Local Limited | Professional & scientific | 2025 |
| Icarus Events Ltd | Hospitality | 2023 |
| Icomm Protect & Connect Ltd | Information & communication | 2014 |
| ID Project Services Ltd | Construction | 2018 |
| Independent Publishing Limited | Professional & scientific | 2007 |
| Indian Village Limited | Hospitality | 2006 |
| Infuse Marketing Limited | Professional & scientific | 2024 |
| Innovate Projects Limited | Construction | 2010 |
| Inspire Pharm Ltd | Wholesale & retail | 2022 |
| Inspired Inspirational Limited | Wholesale & retail | 2024 |
| Ired Limited | Professional & scientific | 2001 |
| IVI Car Wash Ltd | Wholesale & retail | 2020 |
| J & N Limited | Health & social care | 2015 |
| J Hoopers (Fishmongers) Limited | Real estate | 1987 |
| J V Operating Services Ltd | Construction | 2026 |
| J Wallace Holdings Ltd | Real estate | 2020 |
| J. M. Wilkins Ltd | Professional & scientific | 2024 |
| Jack Andrews Ltd | Professional & scientific | 2025 |
| Jack Mcfall Brand Strategy Ltd | Professional & scientific | 2022 |
| Jack Terry Photography Ltd | Professional & scientific | 2016 |
| James Andrew Crook Engineering Ltd | Professional & scientific | 2022 |
| Jamie Hancock Property Ltd | Real estate | 2025 |
| JB Scaffolding (Sussex) Limited | Construction | 2022 |
| JC Glazing and Building Ltd | Construction | 2018 |
| JDC Environmental Contractors Ltd | Water & waste | 2022 |
| Jenny & the Green LID Limited | Real estate | 2017 |
| Jewelli Ltd | Wholesale & retail | 2023 |
| JIM Garland Architects Limited | Professional & scientific | 2002 |
| Jinglama Content Ltd | Professional & scientific | 2021 |
| JJM Property Investments Limited | Real estate | 2016 |
| JMF Capital Ltd | Professional & scientific | 2023 |
| JNC Management Limited | Administrative & support | 2008 |
| Jo-Shea Contractors Limited | Construction | 2002 |
| JOB Roofing Limited | Construction | 2020 |
| John B Jones (Chichester) Limited | Transport & logistics | 2016 |
| John Edward Jones Limited | Professional & scientific | 2015 |
| John King Management Limited | Hospitality | 1993 |
| John Philpott Ltd | Construction | 2007 |
| Jonathan Ditton Ltd | Administrative & support | 2017 |
| Jonathan Ditton the Barbers Ltd | Other services | 2022 |
| Josh Babb Limited | Manufacturing | 2020 |
| JRL Contracting Ltd | Manufacturing | 2025 |
| Juniper Agency Limited | Real estate | 2017 |
| Just Imagine (UK) Limited | Information & communication | 2002 |