| GS Taxi Ltd | Transport & logistics | 2019 |
| GSM Health Limited | Health & social care | 2018 |
| GSP1 Limited | Professional & scientific | 2025 |
| GSS Sarih & Sons Limited | Wholesale & retail | 2026 |
| GT Europe Limited | Manufacturing | 2024 |
| Gttsa Limited | Health & social care | 2021 |
| Guardhouse Security Ltd | Administrative & support | 2015 |
| Guardian Balustrades Limited | Construction | 2024 |
| Guardian Marine Training Services Ltd | Education | 2005 |
| Guardtop Limited | Agriculture & fishing | 1997 |
| Guernsey Home Loans Limited | Financial services | 2002 |
| Guga Ltd | Wholesale & retail | 2023 |
| Guinea PIG App Ltd | Information & communication | 2026 |
| Gulf British Ltd | Wholesale & retail | 2019 |
| Gullu Hair & Beauty Ltd | Other services | 2019 |
| Gulpinar Ltd | Hospitality | 2023 |
| Gungnir Ltd | Other services | 2016 |
| Gurkha Fire Ltd | Hospitality | 2023 |
| Gurkha Fire Popups Ltd | Hospitality | 2024 |
| Gurkhas Brother Limited | Hospitality | 2023 |
| Gurkhas View Limited | Hospitality | 2017 |
| Guscott Heating Services Ltd | Construction | 2018 |
| GWV Brickwork Ltd | Construction | 2019 |
| Gymspire Academy Ltd | Education | 2018 |
| Gyronex Consultancy Limited | Information & communication | 2012 |
| H & H Property and Estate Management Services Ltd | Real estate | 2025 |
| H & H Scaffolding Services Ltd | Administrative & support | 2019 |
| H & K Medway Ltd | Construction | 2024 |
| H & L Properties Ltd | Real estate | 2017 |
| H a R Travels Limited | Transport & logistics | 2023 |
| H R Walia Limited | Other services | 2012 |
| H W Hurstwood (Properties) Limited | Real estate | 1961 |
| H&Sc Support Ltd | Administrative & support | 2021 |
| H. Morfitt & SON Limited | Wholesale & retail | 1939 |
| H2O Eco-Trade Ltd | Transport & logistics | 2020 |
| H2O Leisure Group Ltd | Wholesale & retail | 1995 |
| H3D Consultancy Limited | Professional & scientific | 2020 |
| Habilad Integrated Service Limited | Public administration | 2016 |
| Hackney Black Recordings Ltd | Manufacturing | 2021 |
| Haddon Residential Ltd | Professional & scientific | 2026 |
| Hadene Building Services Limited | Manufacturing | 1998 |
| Hadene Engineering Limited | Manufacturing | 1986 |
| Hafiz Shazib Trading Ltd | Wholesale & retail | 2025 |
| Hair and Beauty Market Ltd | Wholesale & retail | 2019 |
| Hair Nails & Lash Oasis Limited | Other services | 2024 |
| HAK Medics Limited | Health & social care | 2020 |
| Hala Express Limited | Wholesale & retail | 2025 |
| Haldon Construction Limited | Construction | 2020 |
| Hall Utility Services Ltd | Construction | 2022 |
| Hallers Consulting Limited | Other services | 2010 |
| Halliday Cardiology Limited | Health & social care | 2026 |
| Halo Sweets Ltd | Wholesale & retail | 2023 |
| Halo Technical Solutions Limited | Construction | 2017 |
| Halsion MEP Limited | Construction | 2021 |
| Halts Limited | Professional & scientific | 2016 |
| Hamann Limited | Construction | 2017 |
| Hamarni Ltd | Professional & scientific | 2018 |
| Hamilton Frazier Ltd | Professional & scientific | 2023 |
| Hamilton Trading Partners Limited | Wholesale & retail | 2015 |
| Hampine Ltd | Wholesale & retail | 2020 |
| Hampton Financial Limited | Financial services | 2021 |
| Hana Holdings LLP | | 2026 |
| Handrail Design Limited | Construction | 1990 |
| Hands of Compassion Care Ltd | Health & social care | 2018 |
| Hands of Joy Limited | Health & social care | 2024 |
| Hanetohomes Limited | Real estate | 2026 |
| Hannah Property Havens Ltd | Real estate | 2025 |
| Hannam Homes Ltd | Construction | 2022 |
| Hannan Property Letting Services Ltd | Real estate | 2020 |
| Hans Jenssen Illustration Limited | Arts & recreation | 2003 |
| Hans Realty & Co Limited | Households | 2020 |
| Hanson Family Homes Ltd | Real estate | 2026 |
| Hansram Property Limited | Real estate | 2004 |
| Hanuman Private Ltd | Transport & logistics | 2025 |
| Happy Environmental Solutions Limited | Professional & scientific | 2018 |
| Happy Samurai (Butchery Lane) Ltd | Hospitality | 2019 |
| Happydaying Ltd | Professional & scientific | 2021 |
| Happygrillmorecatering Ltd | Hospitality | 2025 |
| Haque Real Estate Limited | Real estate | 2025 |
| Harari Legal Ltd | Professional & scientific | 2025 |
| Harbourstone Group Ltd | Administrative & support | 2025 |
| Hard - Rock CCS Ltd | Construction | 2021 |
| Harmer Heating Ltd | Construction | 2012 |
| Harmony Healthcare Home Ltd | Health & social care | 2024 |
| Harrington Flow Ltd | Financial services | 2025 |
| Harris Community Support Limited | Health & social care | 2025 |
| Harrison's Kent Ltd | Construction | 2020 |
| Harrow CMS Limited | Real estate | 2019 |
| Haruna and Sons Limited | Construction | 2015 |
| Harvey’S Brickwork and Construction Limited | Construction | 2026 |
| Hattily Ltd. | Real estate | 2015 |
| Haus Consultancy (Kent) Limited | Administrative & support | 2024 |
| Haven FM Limited | Real estate | 2023 |
| Haven Living Ltd | Health & social care | 2023 |
| Hawkes Plant (Kent) Ltd | Construction | 2015 |
| Hawkshill Investment Limited | Real estate | 2022 |
| Hawthorn Manor Limited | Administrative & support | 2014 |
| Haydn Clark Ltd | Construction | 2017 |
| Haysfield (Malvern) Business Centre Management Co. Limited | Administrative & support | 2004 |
| Hazel Motors (Gillingham) Limited | Wholesale & retail | 1976 |