| GP Cricket Ltd | Wholesale & retail | 2018 |
| Gracelands Caravan Park Limited | Hospitality | 2026 |
| Gracie Investments Ltd | Real estate | 2024 |
| Graham Smith Consulting Limited | Professional & scientific | 2016 |
| Granite Anchor Ltd | Wholesale & retail | 2026 |
| Graveney Primary School | Education | 2011 |
| Gray Hamilton Limited | Health & social care | 2013 |
| Great Western Railway Limited | Transport & logistics | 1983 |
| Green Lane Construction Limited | Real estate | 2003 |
| Green Rhino Services Ltd | Water & waste | 2017 |
| Greenwood Capital Management Ltd | Information & communication | 2020 |
| Greyhound Grand National Limited | Extraterritorial | 2014 |
| Ground Structures Limited | Construction | 2013 |
| Grove Court(Boughton)Limited | Agriculture & fishing | 1956 |
| Grow a Better Future CIC | Other services | 2018 |
| Growers Friend Ltd | Agriculture & fishing | 2022 |
| GSR Fruits Limited | Agriculture & fishing | 2001 |
| GT1 Consulting Ltd | Professional & scientific | 2023 |
| Gturner Engineering Ltd | Professional & scientific | 2025 |
| Guided Growth Hub CIC | Health & social care | 2025 |
| Guncotton Cottage Industries Limited | Information & communication | 2019 |
| GUR Inc Ltd | Administrative & support | 2026 |
| Gusto Giusto Ltd | Hospitality | 2019 |
| GUY Botting Ltd | Real estate | 2014 |
| GUY Rutter Ltd | Administrative & support | 2021 |
| H Cooper Haulage Ltd | Transport & logistics | 2025 |
| H H Harvey Limited | Agriculture & fishing | 1984 |
| H&E Consulting Ltd | Professional & scientific | 2026 |
| H&J Scaffolding Services Limited | Administrative & support | 2014 |
| H.M. Tickler Limited | Extraterritorial | 1955 |
| H.P. Dick & Sons Limited | Real estate | 1982 |
| Hades Fire Protection Limited | Construction | 2007 |
| Hadley Electrical Services Ltd | Construction | 2021 |
| Haironfleek Ltd | Other services | 2025 |
| Halsbury Estates Limited | Real estate | 1998 |
| Hamilton Edwards Ltd | Administrative & support | 2022 |
| Hams Hall Green Energy Limited | Energy | 2021 |
| Hansen Estate Agents Ltd | Real estate | 2024 |
| Hard Ferr Ltd | Manufacturing | 2025 |
| Hardi Ryder Ventures Ltd | Construction | 2015 |
| Hardy's Market Ltd | Wholesale & retail | 2016 |
| Harley Bear's Coco Bites Limited | Wholesale & retail | 2017 |
| Harmonic Education Ltd | Education | 2023 |
| Harmonic Holidays Ltd | Administrative & support | 2023 |
| Harpshield Limited | Real estate | 1983 |
| Harrier Express (Kent) Limited | Transport & logistics | 2001 |
| Harris Property Development Services Limited | Construction | 2015 |
| Hartmann-King Limited | Wholesale & retail | 1995 |
| Hartwell Property Ltd | Real estate | 2026 |
| Harvest Installations (Holdings) Limited | Financial services | 2019 |
| Harvest Installations Limited | Professional & scientific | 2004 |
| Harvestlight Solar Ltd | Energy | 2025 |
| Hathaway Film and Television Limited | Administrative & support | 2023 |
| Haven Associates Limited | Construction | 2009 |
| Haylor Board & Leadership Advisory Limited | Professional & scientific | 2024 |
| Hazel Property Development Limited | Financial services | 2022 |
| Health Information Consulting Limited | Information & communication | 1997 |
| Healthiest Homes Limited | Energy | 2019 |
| Heart & Soil Community CIC | Other services | 2022 |
| Heart of Dissent Ltd | Wholesale & retail | 2021 |
| Heat Pump Federation | Public administration | 2020 |
| Hebron Care Services Ltd | Administrative & support | 2023 |
| Hebron City Properties Limited | Real estate | 2023 |
| Heckley Utilities Limited | Construction | 2017 |
| Hedges Property (Cinderbank) Limited | Real estate | 2010 |
| Helios Energy Consulting Ltd | Professional & scientific | 2026 |
| Hello Airports Ltd | Transport & logistics | 2018 |
| Henley Fitness Ltd | Education | 2023 |
| Hennessy Building Company Limited | Construction | 2016 |
| Heppington Vineyard Limited | Manufacturing | 2023 |
| Heritage Concept Limited | Real estate | 2007 |
| Hermes Temple Records Limited | Information & communication | 2015 |
| Hesketh & Company Construction Limited | Professional & scientific | 1995 |
| Hickoryjn Limited | Administrative & support | 2020 |
| Hico Developments Limited | Construction | 2023 |
| Hico Events Holdings Limited | Financial services | 2026 |
| Hico Events Limited | Other services | 2019 |
| Hico Services Limited | Hospitality | 2021 |
| Hidden Meadow Homeowners Association Ltd | Households | 2026 |
| Highland Investment Company Holdings Limited | Financial services | 2026 |
| Highland Investment Company Limited | Agriculture & fishing | 1928 |
| Hillside Caravan Site Ltd | Hospitality | 2022 |
| Hilltop House Freehold Ltd | Real estate | 2024 |
| Hilton & Wallace Ltd | Professional & scientific | 2022 |
| Hire a Hubby Faversham Limited | Other services | 2011 |
| Hitch Holdings Ltd | Financial services | 2017 |
| Hitch Properties Limited | Real estate | 2022 |
| Hmsl Management Limited | Financial services | 2019 |
| Hockliffe Green Energy Centre Ltd | Energy | 2022 |
| Hogben & Partis Limited | Other services | 1965 |
| Hogday Investments Limited | Real estate | 2021 |
| Hollowshore Fisheries Ltd | Wholesale & retail | 2022 |
| Hollowshore Services Limited | Manufacturing | 1960 |
| Holmhurst Surgery Limited | Real estate | 2006 |
| Holoraide CAB Ltd | Transport & logistics | 2023 |
| Homeostasis Health Ltd | Health & social care | 2025 |
| Homes in Kent Limited | Real estate | 2006 |
| Homestall IT Consultancy Services Ltd | Information & communication | 2020 |
| Honeycrest Properties Limited | Real estate | 2019 |
| Horne Contracting Limited | Agriculture & fishing | 2013 |