| Hamilton Classic Limited | Wholesale & retail | 2003 |
| Hamilton Consulting Technology Limited | Information & communication | 2026 |
| Hamilton Motorsport Limited | Professional & scientific | 2008 |
| Hamilton-Wallis Limited | Health & social care | 2021 |
| Hamirah Services Limited | Mining & quarrying | 1999 |
| Hampshire Classic Cars Limited | Wholesale & retail | 2016 |
| Hampshire Mail Ltd | Transport & logistics | 2026 |
| Hampshire Network Solutions Ltd | Professional & scientific | 2023 |
| Hampshire School of Photography Limited | Professional & scientific | 2019 |
| Hampshire Super Store Ltd | Wholesale & retail | 2018 |
| Hampshire Travels Ltd | Transport & logistics | 2024 |
| Hampstead Homes Southern Ltd | Construction | 2019 |
| Hampton Brands Limited | Manufacturing | 2008 |
| Hamro Mortgages Ltd | Financial services | 2022 |
| Hamrobichar Ltd | Health & social care | 2024 |
| Handover Cleaning and Maintenance Limited | Administrative & support | 2025 |
| Handyman and Build Limited | Construction | 2026 |
| Hannah Fawcett Ltd | Arts & recreation | 2024 |
| Hannover House Management Company Limited | Real estate | 2016 |
| Hanover Digital Limited | Information & communication | 2006 |
| Hans Guntner (UK) Limited | Other services | 1988 |
| Hanyah Ltd | Real estate | 2025 |
| Happy Graphics Limited | Information & communication | 2011 |
| Happy Home Property Management Ltd | Households | 2026 |
| Happy House Pet Sitters Ltd | Other services | 2022 |
| Happy K9 Tails Ltd | Other services | 2024 |
| Haram Goods Services Ltd | Wholesale & retail | 2026 |
| Harding Osteopathy Limited | Health & social care | 2012 |
| Harms Optics Ltd | Health & social care | 2022 |
| Harriethall Limited | Real estate | 2025 |
| Harrison LI LLP | | 2006 |
| Harrisons Property London Limited | Real estate | 2016 |
| Harry MET Fred Ltd | Manufacturing | 2013 |
| Hart Design Services Ltd | Other services | 2019 |
| Hartley Law Limited | Professional & scientific | 2016 |
| Hartley Law Property Limited | Real estate | 2023 |
| Hartley ROW Park (Hartley Wintney) Management Company Limited | Households | 2015 |
| Hartswood Residents Management Company Limited | Households | 2007 |
| Harvey Pharma Consulting Ltd | Professional & scientific | 2018 |
| Haslemere Carpet Company Limited | Wholesale & retail | 1980 |
| Hatfield Estate Properties Limited | Real estate | 2022 |
| Hatsu Limited | Information & communication | 2013 |
| Hattingh Medical Solutions Limited | Professional & scientific | 2025 |
| Hattos Kitchen Limited | Manufacturing | 2026 |
| Haven Dog Walking Limited | Other services | 2022 |
| Havenburgh Properties Limited | Construction | 1972 |
| Haweli Twyford Limited | Hospitality | 2012 |
| Hawker Siddeley Aviation Limited | Extraterritorial | 1917 |
| Hawker Siddeley Dynamics Limited | Extraterritorial | 1978 |
| Hawkeye Holding Limited | Administrative & support | 2019 |
| Hawley Court Management Company Limited | Households | 1973 |
| Hawley Lake Sail Training Centre | Arts & recreation | 2012 |
| Hawley Lodge Management Company Limited | Administrative & support | 1994 |
| Hawley Place Gardens Property Limited | Households | 2025 |
| Haydons Court Management Limited | Households | 1989 |
| Hayes Fish Market Ltd | Wholesale & retail | 2025 |
| Haynes Square Freehold Limited | Households | 2003 |
| Haynes Square Management Limited | Households | 1987 |
| Haynes Square Management Share Limited | Households | 2010 |
| Haynes Square Phase 11 Management Limited | Households | 1988 |
| Hayrish Asset Management Limited | Professional & scientific | 2015 |
| Hayrish Holdings Limited | Financial services | 2015 |
| Hayrish Investment Management Limited | Professional & scientific | 2015 |
| Hayrish Limited | Agriculture & fishing | 1994 |
| Hayrish Partners LLP | | 2016 |
| Hayter Plastering Ltd | Construction | 2013 |
| HAZ Retail Ltd | Information & communication | 2019 |
| Hazelcom Ltd | Information & communication | 2010 |
| HCL Achilles Limited | Real estate | 2023 |
| HCL Athena Limited | Real estate | 2018 |
| HD and More Limited | Information & communication | 2021 |
| HDJ Investments Limited | Real estate | 2020 |
| Headline Partners Ltd | Administrative & support | 2019 |
| Headon Court Residents Association Limited | Households | 1996 |
| Heald Nickinson (Farnham) Ltd. | Financial services | 2021 |
| Health Series Limited | Administrative & support | 2021 |
| Health, Safety & Fire Consulting Ltd | Professional & scientific | 2019 |
| Healthaxis Consultant Ltd | Health & social care | 2025 |
| Healthscrubs Connect Ltd | Health & social care | 2022 |
| Heath Court Bagshot Residents Association Limited | Households | 1992 |
| Heatherley Road Management Company Limited | Households | 1993 |
| Heathfield Place Management Limited | Households | 1999 |
| Heathhill Developments Limited | Construction | 1964 |
| Heathland Homes Ltd | Construction | 2024 |
| Heating Ace Ltd | Construction | 2019 |
| Hedgehogs Garden Services Limited | Administrative & support | 2020 |
| Hedley Homes Ltd | Real estate | 2025 |
| Heights Property Investments Ltd | Real estate | 2025 |
| Heimr Properties Limited | Households | 2025 |
| HEJ Investments Ltd | Real estate | 2024 |
| Helga's Homes Investments Limited | Real estate | 2025 |
| Helilifestyle Aviation Limited | Transport & logistics | 2025 |
| Heller Holdings Ltd | Real estate | 2022 |
| Hellerman Limited | Administrative & support | 2019 |
| Hello Adventure Ltd | Administrative & support | 2025 |
| Hello TED Ltd | Extraterritorial | 2019 |
| Helpinghands (Frimley) Ltd | Health & social care | 2014 |
| Hendersons Signs Limited | Manufacturing | 2010 |
| Henry C. Nash Limited | Construction | 1994 |
| Hens With Heart Ltd | Wholesale & retail | 2023 |