| Greeves Motorcycles Limited | Manufacturing | 1999 |
| Greysell Limited | Administrative & support | 2012 |
| Griffin Companies Limited | Extraterritorial | 2017 |
| Grimaldi Engineering (2026) Limited | Wholesale & retail | 2018 |
| Grimaldi Engineering Limited | Wholesale & retail | 2006 |
| GRL Electrical Solutions Ltd | Construction | 2020 |
| Grouts Motor Company Limited | Wholesale & retail | 2024 |
| Grsone Ltd | Construction | 2001 |
| Grundy Park Gymnastics Limited | Education | 2025 |
| GS Global Solutions Limited | Construction | 2010 |
| GSM Motor Mechanics Ltd | Wholesale & retail | 2018 |
| GT101 Limited | Wholesale & retail | 2013 |
| GTA Electrical Services Limited | Construction | 2021 |
| GTS Commercial Ltd | Professional & scientific | 2018 |
| Guarantees & Bonds Limited | Financial services | 2008 |
| Guisnes Court Management Company Limited | Households | 1991 |
| Gunton People Solutions Ltd | Administrative & support | 2024 |
| Gymm Technologies Ltd | Information & communication | 2025 |
| H Edwards (South East) Limited | Real estate | 2019 |
| H Edwards (South) Limited | Real estate | 2022 |
| H Edwards Finance Limited | Financial services | 2024 |
| H.W. Iles Estates Limited | Real estate | 1939 |
| H.W. Iles Limited | Financial services | 2026 |
| Hackney Road Prop. Ltd | Real estate | 2025 |
| Hackney Road Property Limited | Real estate | 2017 |
| Hair Structure Ltd | Other services | 2021 |
| Hairmal Ltd | Other services | 2018 |
| Hako Electrical Ltd | Construction | 2026 |
| Halcyon Heights Limited | Information & communication | 2013 |
| Halstead Templars Rugby Football Club Ltd | Arts & recreation | 2018 |
| Hamah Trading Ltd | Wholesale & retail | 2018 |
| Hamblegrove Limited | Financial services | 2005 |
| Hamilton Court Residents Association Limited | Households | 2004 |
| Hammonds Photography Studio Limited | Extraterritorial | 2016 |
| Hanloe Consulting Limited | Professional & scientific | 2020 |
| Hanna Parks Holdings Ltd | Real estate | 2023 |
| Hanningfield Park Investment Limited | Real estate | 2023 |
| Hanningfield Park Residents Management Company Limited | Households | 2023 |
| Hansan Investments Limited | Real estate | 2012 |
| Haoqing Trading Limited | Wholesale & retail | 2023 |
| Happy Healthy Minds Limited | Health & social care | 2024 |
| Happy MAN Films Limited | Information & communication | 2017 |
| Harbro Civils Ltd | Construction | 2024 |
| Harman Construction Services Limited | Construction | 2007 |
| Harms Commercial Ltd | Real estate | 2025 |
| Harms Property Ltd | Real estate | 2019 |
| Harms Refurbishment Ltd | Construction | 2019 |
| Harrella Consulting Limited | Professional & scientific | 2014 |
| Harrella Glazing Solutions Limited | Construction | 2016 |
| Harrietpropertiesuk Limited | Real estate | 2024 |
| Hart Support Services Ltd | Health & social care | 2021 |
| Hartom Farm Holdings Ltd | Financial services | 2024 |
| Harts Rental Services Ltd | Real estate | 2022 |
| Haselford Property Rental Limited Liability Partnership | | 2007 |
| Hastings Flooring Limited | Construction | 2002 |
| Haulable Limited | Information & communication | 2020 |
| Havalan Holdings Limited | Real estate | 2022 |
| Havalan Limited | Information & communication | 2019 |
| Hawkswood Gardens Ltd | Administrative & support | 2024 |
| Hawthorns Necton Management Co Ltd | Households | 2024 |
| Hazkit Ltd | Wholesale & retail | 2023 |
| HC Finance Group Ltd | Financial services | 2023 |
| HC Media Group Ltd | Information & communication | 2018 |
| HCH888 UK Holdings Limited | Financial services | 2026 |
| HCS Marine Limited | Transport & logistics | 2016 |
| HD Supported Living Ltd | Health & social care | 2025 |
| Headsup Academy Ltd | Education | 2020 |
| Healey Hunt Limited | Real estate | 2025 |
| Healthiever Ltd | Manufacturing | 2023 |
| Healthy Prosperity Ltd | Education | 2024 |
| Heartfelt Home Support Ltd | Health & social care | 2026 |
| Heath Hatcheries LLP | | 2005 |
| Heatheridge Residents Association Limited | Real estate | 1990 |
| Helgor-Morbey Estates Limited | Real estate | 2019 |
| Heliarc Technology Limited | Manufacturing | 2005 |
| Hell Media Ltd | Manufacturing | 2024 |
| Help With ISO Ltd | Professional & scientific | 2025 |
| Henkal Ltd | Construction | 2018 |
| Henry Brake Ltd | Administrative & support | 2012 |
| Hercules Park Ltd | Real estate | 2025 |
| Heritage Marine Foundation | Arts & recreation | 2011 |
| Heritage Marine Limited | Transport & logistics | 2003 |
| Heritage Quay (Maldon) Management Company Limited | Households | 2002 |
| Herts Wealth Management Ltd | Real estate | 2024 |
| HEX Labs Games Ltd | Wholesale & retail | 2024 |
| Heybridge Breakfast Bar Ltd | Hospitality | 2019 |
| Heybridge Design Services Limited | Professional & scientific | 2016 |
| Heybridge Finance Limited | Financial services | 2019 |
| HGB Manufacturing Ltd | Manufacturing | 2020 |
| HH Rents Ltd | Real estate | 2025 |
| Hibbert-Foy Property Ltd | Real estate | 2025 |
| High Tide Holdco Limited | Financial services | 2021 |
| High Tide Propco Hythe Limited | Construction | 2021 |
| Highams Farm Limited | Agriculture & fishing | 2004 |
| Highbanks Ltd | Construction | 2008 |
| Highview Land Ltd | Real estate | 2026 |
| Hill House Park (Freehold) Limited | Households | 2001 |
| Hills Cleaning Solutions Ltd | Administrative & support | 2018 |
| Hilton Building Solutions Ltd | Construction | 2025 |
| Hinsa UK Ltd | Hospitality | 2022 |