| Green Planet Consulting Limited | Professional & scientific | 2017 |
| Green Power Consultancy Services Ltd | Professional & scientific | 2015 |
| Green Shoots Properties (Thanet) Ltd | Real estate | 2013 |
| Green Skills Solutions Limited | Education | 2021 |
| Green Soap Consultants Limited | Professional & scientific | 2020 |
| Greenfinches (Kent) Limited | Real estate | 2006 |
| Greenfinches Property Developments Limited | Construction | 2003 |
| Greenfinches Property Investments Ltd | Real estate | 2017 |
| Greenfinches Residential Developments Ltd | Construction | 2015 |
| Greenfinches Residential Lettings Ltd | Real estate | 2015 |
| Greenhills Property Limited | Real estate | 2025 |
| Greenside House Management Company Limited | Households | 2001 |
| Gresham Investments Limited | Real estate | 2024 |
| Gresham Rooms Limited | Hospitality | 2022 |
| Griffig Ltd. | Real estate | 2024 |
| Griffin Intelligent Systems Ltd | Manufacturing | 2018 |
| Griksas Developments Ltd | Real estate | 2023 |
| Griksas Investments Limited | Real estate | 2021 |
| Grimsby Road 499 Cleethorpes Limited | Real estate | 2021 |
| Ground Build Maintenance Ltd | Construction | 2025 |
| Groundhog Property Ltd | Real estate | 2024 |
| Group 2 Projects Ltd | Information & communication | 2019 |
| GRT Testing & Inspection Ltd | Professional & scientific | 2009 |
| GT Live Ltd | Information & communication | 2026 |
| GT Shows Ltd | Arts & recreation | 2018 |
| Gtmg Shows Limited | Arts & recreation | 2015 |
| GUY Couriers Ltd | Transport & logistics | 2012 |
| Gwpcc Ltd | Information & communication | 2023 |
| H & M (Systems) Limited | Manufacturing | 1981 |
| H Smith Property Services Ltd | Real estate | 2020 |
| H&C Aero Limited | Wholesale & retail | 2018 |
| H&R Labs Ltd | Other services | 2023 |
| Habibis Margate Ltd | Hospitality | 2026 |
| Habitat Build Limited | Construction | 2020 |
| Habitat Lets Limited | Real estate | 2020 |
| Habitats for Humanity Ltd | Construction | 2022 |
| Hair Station Salon Ltd | Other services | 2018 |
| Hairology Limited | Professional & scientific | 2016 |
| Hairstation Academy Limited | Education | 2018 |
| Hakkxperformance Ltd | Wholesale & retail | 2025 |
| Halftime Limited | Information & communication | 2015 |
| Hall and Spranklen Limited | Professional & scientific | 2023 |
| Halldane Services Ltd | Construction | 2020 |
| Hallmark London Ltd | Manufacturing | 2023 |
| Hamburg International Ltd | Information & communication | 2020 |
| Hamilton Laboratory Glass Limited | Manufacturing | 1973 |
| Hand Made Margate Ltd | Wholesale & retail | 2026 |
| Hannah Retail Ltd | Wholesale & retail | 2022 |
| HAQ & HAQ Investments Limited | Real estate | 2022 |
| Harbour Bakery Ramsgate Ltd | Wholesale & retail | 2018 |
| Harley Gawler Ltd | Arts & recreation | 2021 |
| Harmonious Living | Health & social care | 1997 |
| Harold Mews Management Limited | Households | 2022 |
| Harrington Sound Limited | Hospitality | 2020 |
| Harry Hooper Limited | Wholesale & retail | 2008 |
| Harvey Waste Management Ltd | Water & waste | 2023 |
| Harwood Investments Limited | Real estate | 1962 |
| HASAN17 Limited | Wholesale & retail | 2018 |
| Hatko Ltd | Wholesale & retail | 2021 |
| Hato Limited | Wholesale & retail | 2025 |
| Hawkinge Community Football and Sports Trust | Arts & recreation | 2009 |
| Hayley Newman Beauty & Skincare Ltd | Other services | 2024 |
| Hayley's Comets Ltd | Health & social care | 2018 |
| Hdjmarketing Ltd | Wholesale & retail | 2024 |
| Healing Hands Therapeutic Massage Ltd. | Other services | 2019 |
| Heart House Ltd | Hospitality | 2020 |
| Hearty Living Ltd | Real estate | 2014 |
| Heid Games Ltd | Information & communication | 2022 |
| Helden Consultants Limited | Professional & scientific | 2015 |
| Helectron Ltd | Information & communication | 2024 |
| Heliconian Studios Ltd | Professional & scientific | 2023 |
| Helios Security Limited | Administrative & support | 2025 |
| Hellings Fabrications Limited | Manufacturing | 1989 |
| Hellings Property Ltd | Real estate | 2024 |
| Hello ALL Consulting Ltd | Health & social care | 2026 |
| Hello Buro Limited | Professional & scientific | 2015 |
| Help Your Hospice Ltd | Wholesale & retail | 2024 |
| Henderson Estates Limited | Construction | 2025 |
| Hendersons Property Management Limited | Real estate | 2025 |
| Henris Pizzeria Ltd | Hospitality | 2020 |
| Hera Property Investments Ltd | Hospitality | 2023 |
| Here Productions Ltd | Information & communication | 2015 |
| Hereward Motors (Kent) Ltd | Wholesale & retail | 2013 |
| Hernebaysunsetbar Ltd | Hospitality | 2025 |
| Hewn Holdings Limited | Manufacturing | 2026 |
| HFS Contractors Ltd | Construction | 2023 |
| Hhfw Ltd | Wholesale & retail | 2014 |
| Hidden Gems Margate Limited | Wholesale & retail | 2025 |
| Higham Plumbing & Heating Services Ltd | Construction | 2008 |
| Highland Property Group (Canterbury) Ltd | Construction | 2015 |
| Hightown Pirates Ltd | Information & communication | 2023 |
| Hilger Holdings Ltd | Financial services | 2023 |
| Hill Building Services Kent Ltd | Administrative & support | 2016 |
| Hill Professional Cleaning Services Ltd | Administrative & support | 2022 |
| Hillback Limited | Construction | 2024 |
| Himalayan Cafe Margate Limited | Hospitality | 2026 |
| Hired Solutions Ltd | Administrative & support | 2024 |
| Hiro and Wolf Limited | Manufacturing | 2015 |
| Hive Accounting Services Limited | Professional & scientific | 2023 |
| HJT Financial Services Limited | Professional & scientific | 2020 |