| Global Tint Fareham Limited | Administrative & support | 2019 |
| Globaldealing(Soton) Limited | Extraterritorial | 2003 |
| GMD Associates Health & Safety Training and Advisory Services Limited | Professional & scientific | 2004 |
| GMM Construction Limited | Wholesale & retail | 2004 |
| GMS Management Holdings Ltd | Financial services | 2023 |
| GN Tax Limited | Professional & scientific | 2006 |
| Godwins-Law Limited | Professional & scientific | 2001 |
| Gokce Repair Works Limited | Manufacturing | 2020 |
| Gold Standard Solutions Limited | Professional & scientific | 2007 |
| Goldcrest Enterprises (Southern) Limited | Real estate | 2000 |
| Goodchild Investments Ltd | Real estate | 2021 |
| Gosport Home Improvements Limited | Construction | 2002 |
| Gotting Violins Limited | Manufacturing | 2003 |
| Gourmet ERP Solutions Ltd | Information & communication | 2017 |
| GPJ Technology Limited | Information & communication | 2007 |
| GPR Wessex Limited | Real estate | 2005 |
| Graeme Foreman LLP | | 2023 |
| Graham Orrin Installations Limited | Construction | 2002 |
| Grand Movement UK Ltd | Wholesale & retail | 2023 |
| Grant Smith Holdings Ltd | Professional & scientific | 2017 |
| Grant's Services Limited | Professional & scientific | 1991 |
| Grantquay Limited | Professional & scientific | 1990 |
| Grapho Financial Limited | Professional & scientific | 2003 |
| Grayer & Lawrence Limited | Construction | 2003 |
| Grayshott Chiropractic Clinic Limited | Health & social care | 2007 |
| Green Britain Ltd | Construction | 2007 |
| Greenclose Hotels Limited | Hospitality | 1959 |
| Greendrawer Limited | Manufacturing | 1991 |
| Greenways Newsagents Limited | Wholesale & retail | 2004 |
| Griffin Properties (Hampshire) Limited | Real estate | 2006 |
| Groovy Cigarettes Limited | Wholesale & retail | 2017 |
| Grosvenor Merchants Limited | Wholesale & retail | 2005 |
| GRP Roofing (UK) Limited | Construction | 2003 |
| Gryphon I.T. Limited | Information & communication | 1999 |
| Gsad Trading Limited | Wholesale & retail | 2012 |
| Guessens Co Limited | Real estate | 2002 |
| Guild Bespoke Metalworks Limited | Manufacturing | 2003 |
| Gurt Lush Limited | Wholesale & retail | 2025 |
| GW Metrology Ltd | Manufacturing | 2007 |
| Gwct Events Limited | Arts & recreation | 2003 |
| Gybe Enterprises Ltd | Information & communication | 2003 |
| H - C Travel Limited | Administrative & support | 2001 |
| H and T Limited | Real estate | 2001 |
| H&H Chingford Ltd | Real estate | 2025 |
| H+S Aviation Limited | Transport & logistics | 1946 |
| H.E. Hall (Rowlands) Limited | Wholesale & retail | 1980 |
| Hail & Stone Consultancy Limited | Professional & scientific | 2003 |
| Hair Art (Alresford) Limited | Other services | 2003 |
| Hamble Construction Services Ltd | Professional & scientific | 1993 |
| Hampshire Congregational Union(Incorporated)The | Other services | 1912 |
| Hampshire Electro Plating Co. Limited | Professional & scientific | 1946 |
| Hampshire Golf 2019 Limited | Arts & recreation | 2019 |
| Hampshire Oak Carpenters Limited | Manufacturing | 1998 |
| Hampshire Playgroup Ltd | Education | 2006 |
| Hampshire Scaffolding Co. Limited | Wholesale & retail | 1985 |
| Hampshire Skips Limited | Professional & scientific | 2005 |
| Hamrahbam Ltd | Wholesale & retail | 2025 |
| Hamwic Engineering Limited | Manufacturing | 1997 |
| Handle With Care (Portsmouth) Limited | Administrative & support | 2002 |
| Happy MOO Limited | Hospitality | 2017 |
| Harding Consolidated Property Holdings Limited | Extraterritorial | 1997 |
| Harding Holdings U.K. Limited | Construction | 1991 |
| Harewood Forest Produce Limited | Manufacturing | 2006 |
| Hargreaves (Holdings) Limited | Professional & scientific | 1993 |
| Hargreaves (Trading Group) Limited | Financial services | 2017 |
| Hargreaves (Trading Property) Limited | Financial services | 2017 |
| Hargreaves Commercial Property Limited | Financial services | 2017 |
| Hart Garden Machinery Limited | Manufacturing | 1986 |
| Hartley Store Limited | Wholesale & retail | 2016 |
| Hatlands Ltd | Real estate | 2021 |
| Hattigina Ltd | Financial services | 2005 |
| Havant Electrics Limited | Construction | 1999 |
| Havant Insurance Services Limited | Financial services | 2003 |
| Havant Sheet Metal Company Limited(The) | Manufacturing | 1941 |
| Havant Specsavers Limited | Wholesale & retail | 1991 |
| Havant Visionplus Limited | Wholesale & retail | 1993 |
| Haven Ambulance Limited | Education | 2001 |
| Havendale Contractors Limited | Construction | 2003 |
| Hawksdown Veterinary Centre Limited | Professional & scientific | 2006 |
| Hawleys (Tyre Services) Limited | Extraterritorial | 1961 |
| Hayhoe Designs Ltd. | Manufacturing | 1999 |
| Hayling Graphics Limited | Information & communication | 2007 |
| Hayling Island Sail Training Trust | Education | 1996 |
| Hayling Pontoons Limited | Manufacturing | 1998 |
| Hayling Yacht Company Limited(The) | Manufacturing | 1935 |
| Hazebrouck Management Co Limited | Households | 1987 |
| Hazel Court (New Milton) Limited | Households | 1991 |
| Heady & Company (Business Services) Limited | Professional & scientific | 2007 |
| Heady Art Limited | Arts & recreation | 2003 |
| Heady Brew Limited | Administrative & support | 2003 |
| Heapham Road Development Limited | Construction | 2005 |
| Heartview Care Services Ltd | Health & social care | 2018 |
| Heat London Limited | Administrative & support | 2002 |
| Heatherland Healthcare Limited | Health & social care | 2002 |
| Heathfield Care Homes Limited | Health & social care | 2005 |
| Heathlake (Petersfield) Management Company Limited | Households | 1977 |
| Hellyer & Co.,Limited | | 1947 |
| Henderson-Smith Associates Limited | Professional & scientific | 2002 |
| Hengist Inspired Limited | Information & communication | 2013 |
| Henry Potter & Co (Drums) Ltd | Manufacturing | 2007 |