| Guardian Tax Consultants Ltd | Professional & scientific | 2016 |
| Guildersfield (Bognor Regis) Limited | Extraterritorial | 2011 |
| Gummy Shark Studio Ltd | Arts & recreation | 2024 |
| GVS (Iver) Limited | Wholesale & retail | 2015 |
| Gwcomposites Ltd | Professional & scientific | 2024 |
| Gydies (B.O.J.) Limited | Real estate | 2011 |
| Gyrosystem Limited | Information & communication | 1985 |
| GZ Productions Ltd | Information & communication | 2024 |
| H & S Engineering Solutions Ltd | Construction | 2018 |
| H&D Building Ltd | Construction | 2025 |
| H-P Creations Ltd | Professional & scientific | 2023 |
| H. & B. Sensors Limited | Manufacturing | 1979 |
| H. G-Bell's Plumbing & Heating Ltd | Construction | 2021 |
| Habib Takeaway Ltd | Hospitality | 2017 |
| Haime and SON Limited | Administrative & support | 2014 |
| Half a Bar Limited | Other services | 2019 |
| Halliford Drive Limited | Households | 2020 |
| Halnaker Motors Ltd | Wholesale & retail | 2024 |
| Halo Accident Repair Centre Limited | Wholesale & retail | 2012 |
| Hammond and Gates UK Limited | Administrative & support | 2017 |
| Hampshire & Sussex Properties Limited | Real estate | 2023 |
| Hampshire Distance Training & Assessments Ltd | Education | 2019 |
| Hampshire Toilet Hire Limited | Administrative & support | 2017 |
| Hampshire Training & Assessments Ltd | Education | 2018 |
| Handprinted Ltd | Wholesale & retail | 2011 |
| Hangwan Asian Ltd | Hospitality | 2026 |
| Hannah Clubb Communications Limited | Professional & scientific | 2022 |
| Happyilly Ltd | Hospitality | 2019 |
| Harbonline Limited | Wholesale & retail | 2024 |
| Hard Surface Solutions Ltd | Construction | 2021 |
| Hare Hatch Sheeplands Limited | Agriculture & fishing | 2017 |
| Harefield Estate (Middleton) Management Limited | Households | 1989 |
| Harefield Gardens RTM Company Limited | Real estate | 2010 |
| Hares Servicing and Repairs Limited | Manufacturing | 2018 |
| Harri Enterprises Limited | Information & communication | 2015 |
| Harrietscoffee Ltd | Hospitality | 2020 |
| Harris & Son’S Electrical Ltd | Construction | 2025 |
| Harris Decorating Limited | Construction | 2017 |
| Harry Wingate Films Ltd | Administrative & support | 2019 |
| Harrycomp Ltd | Professional & scientific | 2023 |
| Hartleys Food & Drinks Ltd | Wholesale & retail | 2021 |
| Hartleys Property Investment Ltd | Real estate | 2024 |
| Hartspring Consultants Limited | Administrative & support | 1990 |
| Harvtech Consultancy Ltd | Information & communication | 2015 |
| Harwood Scaffolding Ltd | Construction | 2025 |
| Hatikvah Film Trust | Information & communication | 2004 |
| Havenlea Properties Limited | Real estate | 1993 |
| Havenstoke Homes Ltd | Construction | 2026 |
| Hawkins Field Management Company Limited | Households | 2022 |
| Hawthorn Supermarket Ltd | Wholesale & retail | 2016 |
| Hawthorns (Management) Bognor Regis Limited | Households | 1963 |
| Hayling MOT Limited | Wholesale & retail | 2025 |
| HB Building & Construction Ltd | Construction | 2025 |
| HB Creative Studio Limited | Other services | 2025 |
| HD Properties Sussex Ltd | Real estate | 2025 |
| Headline Printers Limited | Manufacturing | 1992 |
| Healing Hands Chiropractor Ltd | Health & social care | 2023 |
| Health Mind Body Limited | Wholesale & retail | 2017 |
| Hearthway UK CIC | Health & social care | 2026 |
| Heather Court RTM Company Limited | Households | 2010 |
| Heather Elliott Limited | Real estate | 2017 |
| Hedgerow Engineering Ltd | Manufacturing | 2025 |
| Hedley Forge Build Ltd | Construction | 2026 |
| Heller Homes Limited | Real estate | 2025 |
| Hello Baobab Ltd | Extraterritorial | 2021 |
| Help Your Bills Ltd | Administrative & support | 2026 |
| Hemmings & Franks (Course) Limited | Extraterritorial | 1962 |
| Hemtech Ltd | Professional & scientific | 2007 |
| Henderson Roofing Limited | Construction | 2022 |
| Hendesigns Limited | Construction | 2003 |
| Heritage House (Management) Limited | Real estate | 2004 |
| Herons Court Residents Association Limited | Households | 1959 |
| Hester Royall Holdings Limited | Real estate | 2017 |
| Hewarts Ltd | Information & communication | 2015 |
| Hewfix Limited | Construction | 2023 |
| HEY Amigo Event Management Ltd | Professional & scientific | 2024 |
| HEY Amigo Ltd | Hospitality | 2021 |
| HFC Consultants Limited | Professional & scientific | 2022 |
| Hgfr Marine Services Limited | Manufacturing | 2012 |
| Hideinstyle Limited | Manufacturing | 2003 |
| High Concept Creative Ltd | Professional & scientific | 2026 |
| Highclere Electrical Limited | Construction | 2014 |
| Highground Orchards Management Company Limited | Households | 2020 |
| Hill Barn Lane Management Company Limited | Real estate | 2013 |
| Hillcrest Houses & Flats Limited | Real estate | 2018 |
| Hind and Parker Investments Limited | Real estate | 2021 |
| Hobbs Law LLP | | 2011 |
| Hodges Brother's Building & Carpentry Limited | Construction | 2019 |
| Hodget Music Publications Ltd | Wholesale & retail | 2017 |
| Hodgsoncom Limited | Construction | 2015 |
| Holistic Motion PT Limited | Arts & recreation | 2020 |
| Holland Prime Projects Ltd | Construction | 2025 |
| Holly House Victoria Drive RTM Company Limited | Real estate | 2014 |
| Hollybrook Developments Limited | Real estate | 1991 |
| Holroyd Music Limited | Arts & recreation | 2003 |
| Home Counties Roofing Ltd | Construction | 2014 |
| Home Education Festivals | Other services | 2016 |
| Home Invest 25 Ltd | Real estate | 2025 |
| Home TEC Specialist Solutions Limited | Manufacturing | 2014 |
| Home Worx Limited | Other services | 2025 |