| GS Equine Transport Limited | Administrative & support | 2023 |
| GSP Fitter Ltd | Manufacturing | 2018 |
| GTO Sales Services Ltd | Other services | 2010 |
| Gulf Digital Resources Limited | Information & communication | 2023 |
| Gyrfalcon Limited | Professional & scientific | 1990 |
| H & B Motors Ltd | Wholesale & retail | 2019 |
| H & H South Properties Ltd | Real estate | 2020 |
| H B Landscaping Ltd | Administrative & support | 2018 |
| H Dalton Limited | Health & social care | 2023 |
| H&A Mini Market Limited | Wholesale & retail | 2026 |
| H.T.S.Management Holdings Limited | Hospitality | 1969 |
| H2O Pure Clean Ltd | Administrative & support | 2017 |
| HAI Sport Limited | Wholesale & retail | 2016 |
| Hair by RLV Ltd | Other services | 2023 |
| Hair Where YOU ARE Limited | Other services | 2025 |
| Hairplus Ltd | Other services | 2018 |
| Halbres Ltd | Professional & scientific | 2024 |
| Halle's Ltd | Health & social care | 2012 |
| Halo Developments (Construction) Ltd | Construction | 2022 |
| Halo Developments (Investments) 2 Ltd | Real estate | 2025 |
| Halo Developments (Investments) Ltd | Real estate | 2023 |
| Halo Developments (Ringwood One) Ltd | Construction | 2024 |
| Halo Developments (Ringwood Two) Ltd | Construction | 2025 |
| Halo Developments (South) Ltd | Real estate | 2019 |
| Halo Developments (UK) Ltd | Construction | 2009 |
| Hamer Construction Limited | Construction | 2007 |
| Hamnett Holdings Ltd | Financial services | 2023 |
| Hampshire & Dorset Landscapes Ltd | Administrative & support | 2023 |
| Hampshire Hospitality Ltd | Hospitality | 2011 |
| Hampshire Life Skills Ltd | Information & communication | 2016 |
| Hands on Support Ltd | Administrative & support | 2019 |
| Hangman London Limited | Professional & scientific | 2009 |
| Happy Days Retro Vacations Limited | Real estate | 2011 |
| Harbour Apartments Limited | Households | 2023 |
| Harbour Close (Poole) Limited | Real estate | 1975 |
| Harbour Reach Freehold Limited | Households | 2007 |
| Harbour Reach RTM Company Limited | Households | 2008 |
| Harbour Upholstery Limited | Manufacturing | 2023 |
| Harbridge Productions Ltd | Information & communication | 2021 |
| Harding Industries Ltd | Professional & scientific | 2022 |
| Harlequin Band Ltd | Arts & recreation | 2025 |
| Harper Beauty Ltd | Other services | 2024 |
| Harris & Johnson Ltd | Professional & scientific | 2021 |
| Harrison Property Consultancy Limited | Professional & scientific | 2002 |
| Harvest for Hope (Waterloo) Limited | Other services | 2018 |
| Haven View Properties Ltd | Construction | 2008 |
| Haven View RTM Company Limited | Households | 2023 |
| Haybrook Rise (Pewsey) Management Company Limited | Households | 2020 |
| Haydon Construction Ltd | Construction | 2021 |
| Haydon Medical Services Limited | Health & social care | 2016 |
| Hayler Ashfield Associates Ltd | Professional & scientific | 2024 |
| Haynes (Holding) Company Limited | Real estate | 1956 |
| Haynes Partners Limited | Real estate | 2023 |
| Haynes Residential Limited | Construction | 2012 |
| Haystack Dryers Limited | Arts & recreation | 2000 |
| HCI Distribution Limited | Wholesale & retail | 2002 |
| Hdiuk Limited | Wholesale & retail | 2010 |
| Head Shed Hair Salons Limited | Other services | 2024 |
| Head Shed Retreat Limited | Other services | 2022 |
| Headlands Garage Downton Limited | Wholesale & retail | 2025 |
| Healthspace Studios Limited | Real estate | 2015 |
| Hearbuy Limited | Wholesale & retail | 2002 |
| Heart of Oak Bookkeeping Ltd | Professional & scientific | 2024 |
| Heart of Oak Limited | Professional & scientific | 1995 |
| Heath Flooring Supplies Limited | Wholesale & retail | 2014 |
| Heather Ridge Close Limited | Real estate | 2023 |
| Heatherlea Lodge Freehold Limited | Households | 2017 |
| Heathside Travel Ltd | Transport & logistics | 2015 |
| Hebdons Holdings Ltd | Financial services | 2025 |
| Hedgehog 22 Ltd | Construction | 2025 |
| Help 4 Kidz Limited | Education | 2020 |
| Helping Older People New Forest | Health & social care | 2012 |
| Helpmission Limited | Households | 1992 |
| Henrietta Ferguson Ltd | Administrative & support | 2013 |
| Heritage Getaways Ltd | Real estate | 2023 |
| Hermes Contracting Ltd | Administrative & support | 2016 |
| Hewitt Fitness Equipment Limited | Wholesale & retail | 2021 |
| HEY Create Ltd | Manufacturing | 2022 |
| HHC Freehold Limited | Real estate | 2022 |
| High Marsh Limited | Wholesale & retail | 2016 |
| High Tide Building & Security LLP | | 2024 |
| Highdown Finance Limited | Other services | 2011 |
| Highgrove Mews Residents Limited | Real estate | 2012 |
| Hightown Orchards Management Limited | Households | 2009 |
| Highwood Copse Co. Limited (the) | Professional & scientific | 1969 |
| Hill Street Court Management Limited | Households | 2002 |
| Hillside Construction (Ringwood) Limited | Construction | 2007 |
| Hind Head ( Aldermaston ) Ltd | Hospitality | 2023 |
| HJS General Building Ltd. | Construction | 2019 |
| HJT Drainage Solutions Ltd | Manufacturing | 2025 |
| HK Consultancy Ltd | Professional & scientific | 2011 |
| HM Soccer Ltd | Arts & recreation | 2023 |
| HMA & Co Services Ltd | Professional & scientific | 2016 |
| Hmmc Property Limited | Professional & scientific | 2010 |
| Hoare Lettings Ltd | Real estate | 2019 |
| Hokum Studios Limited | Information & communication | 2023 |
| Holdenhurst Properties Limited | Real estate | 1981 |
| Holly Hill Maintenance Company Ltd | Households | 2022 |
| Holmsley Mill Ltd | Manufacturing | 1992 |
| Home Improvement Team Limited | Professional & scientific | 2010 |