| GTI Consultancy Ltd | Professional & scientific | 2020 |
| GUA Ltd | Information & communication | 2022 |
| Guiding Stars Consulting Ltd | Education | 2021 |
| Gunhand the Movie Ltd | Information & communication | 2022 |
| Gunn-Kardec Limited | Information & communication | 2005 |
| GW Marine Survey Ltd | Professional & scientific | 2017 |
| H G Optics Limited | Health & social care | 2007 |
| H-Racks Limited | Transport & logistics | 2020 |
| Hair Genius Limited | Other services | 2011 |
| Hallam Lloyd Limited | Professional & scientific | 1986 |
| Halo Ground Ltd | Real estate | 2026 |
| Halodawn Limited | Wholesale & retail | 2017 |
| Halt Consultancy Ltd | Professional & scientific | 2024 |
| Hampshire Arboriculture Ltd | Agriculture & fishing | 2017 |
| Hampshire Country Gardeners Ltd | Administrative & support | 2026 |
| Hampshire Garden Structures Ltd | Manufacturing | 2019 |
| Hampshire Haulage Limited | Transport & logistics | 2020 |
| Hampshire Memorials Limited | Other services | 1979 |
| Hampshire Prioryhouse Limited | Construction | 2016 |
| Hampshire Properties 1983 Ltd | Administrative & support | 2016 |
| Hampshire Recruitment Group Ltd | Administrative & support | 2016 |
| Hampshire Sash Window Services Limited | Construction | 2015 |
| Hampshire Wood Fuels Ltd | Agriculture & fishing | 2021 |
| Hand ME Down Productions Limited | Arts & recreation | 2025 |
| Handley & SON Limited | Wholesale & retail | 2002 |
| Hanevo Holdings Limited | Financial services | 2022 |
| Hanevo Ltd | Construction | 2012 |
| Hannah Slater Mncp Trst Residuary Beneficiary Limited | Extraterritorial | 2026 |
| Hannams Auctioneers Ltd | Wholesale & retail | 2017 |
| Happy Homes Hampshire Ltd | Other services | 2024 |
| Hardware Retail Group Limited | Wholesale & retail | 2021 |
| Hare&Giraffe Imaging Limited | Health & social care | 2020 |
| Harfleet Limited | Professional & scientific | 2024 |
| Hari BOL Limited | Wholesale & retail | 2019 |
| Harlequin Computer Solutions Limited | Information & communication | 1991 |
| Harnden Orme Mason Estates Limited | Construction | 2002 |
| Harris & Barnes (Funeral Directors) Limited | Other services | 1979 |
| Harrogate (T) Hairdressing Limited | Other services | 2019 |
| Hart Evans Properties Limited | Real estate | 2024 |
| Hartfield KM Consulting Limited | Administrative & support | 2016 |
| Hartley Park Farms Limited | Agriculture & fishing | 1987 |
| Hartley Park Group Limited | Agriculture & fishing | 2026 |
| Hartley Park Land (Holdings) Limited | Agriculture & fishing | 2026 |
| Hartley Park Land Limited | Professional & scientific | 1989 |
| Hartley View Management Co. Limited | Water & waste | 1992 |
| Hattingley Associates Ltd | Other services | 2023 |
| Hattingley Consulting Ltd | Information & communication | 2020 |
| Hattingley Ventures Ltd | Professional & scientific | 2026 |
| Havenstone Stays Ltd | Hospitality | 2026 |
| Hazel Road Management Company Limited | Real estate | 2012 |
| Hazelgrove Developments Limited | Construction | 2017 |
| Hazelgrove Services Limited | Construction | 2003 |
| Hazelwood Grange Management Company Limited | Households | 2003 |
| HD Operations Ltd | Hospitality | 2023 |
| Headhone Developments Ltd | Agriculture & fishing | 2021 |
| Headley Business Advisory Services Limited | Professional & scientific | 2006 |
| Headley Group Limited | Financial services | 2003 |
| Healey Works Limited | Extraterritorial | 2024 |
| Healthtech Accelerator Limited | Professional & scientific | 2024 |
| Heat Knights Boiler Repair London and Plumbing Ltd | Construction | 2016 |
| Helios Care Ltd | Public administration | 2025 |
| Hellenic Grocery Limited | Wholesale & retail | 2013 |
| Hellenic Property Investments Ltd | Real estate | 2022 |
| Hello and Flow Ltd | Arts & recreation | 2020 |
| Henry Brand Ltd | Extraterritorial | 2025 |
| Heracles Productions Limited | Information & communication | 2022 |
| Hermitage Comms LLP | | 2016 |
| Herongate Enterprises Limited | Arts & recreation | 2019 |
| Herongate Fitness & Wellbeing | Arts & recreation | 2018 |
| Hertford (T) Hairdressing Limited | Other services | 1999 |
| Hesk Communications Limited | Professional & scientific | 2017 |
| HF Finance Ltd | Professional & scientific | 2024 |
| HGR Marketing Limited | Professional & scientific | 2003 |
| HH Creative London Ltd | Professional & scientific | 2023 |
| HHG Health Limited | Health & social care | 2020 |
| Hibbert & Associates LLP | | 2016 |
| High Copse Management Limited | Real estate | 2013 |
| Highbury Innovations Ltd | Information & communication | 2025 |
| Highclere Hens Ltd | Wholesale & retail | 2023 |
| Highclere Meadow Ltd | Hospitality | 2023 |
| Highlands Property Management Company Limited | Administrative & support | 2007 |
| Highmount Homes Limited | Construction | 2020 |
| Highpath Developments Limited | Construction | 2014 |
| Highpath Haslemere Ltd | Construction | 2021 |
| Hilltoll Ltd | Professional & scientific | 1998 |
| Hippo Accountants Limited | Professional & scientific | 2015 |
| Hirenex Limited | Professional & scientific | 2021 |
| Hitchin (T2) Hairdressing Limited | Other services | 2016 |
| HJF2 Invest Ltd | Extraterritorial | 2004 |
| Hmrb Associates Limited | Professional & scientific | 2019 |
| Hobson & Blunt Ltd | Construction | 2020 |
| Hollybourne Developments Limited | Construction | 1973 |
| Holmes & Daughters Limited | Other services | 1999 |
| Holybourne Flooring Limited | Wholesale & retail | 1998 |
| Holybourne Theatre | Arts & recreation | 2001 |
| Home School Tutoring North East Hampshire and Surrey Limited | Education | 2022 |
| Honey Lettings Alton Limited | Real estate | 2017 |
| Hooke Production Management Ltd | Information & communication | 2015 |
| Hooker & Company Limited | Wholesale & retail | 2003 |
| Hopcroft Property Investments Ltd | Real estate | 2022 |