| Fyfield Holdings Limited | Financial services | 2002 |
| Fyfield Travel Ltd | Transport & logistics | 2019 |
| Fyfield Village Pre-School Ltd | Health & social care | 2018 |
| Fyfield Village Vets Limited | Professional & scientific | 2024 |
| G & E Inc Limited | Financial services | 2024 |
| G. Q. Vincent Limited | Education | 2018 |
| GA Emergency Maintenance Ltd | Construction | 2025 |
| Gable Trading Limited | Administrative & support | 2016 |
| Gabriel Creatives Limited | Information & communication | 2024 |
| Gaia Rental Limited | Administrative & support | 2025 |
| Gaiaonline.Store Ltd | Hospitality | 2018 |
| Gallagher Partners & Co Limited | Wholesale & retail | 2018 |
| Garden Court (Cranham) Management Co. Ltd | Households | 1992 |
| Garden Field Estates Limited | Financial services | 2019 |
| GB Clearance Paint & Building Supplies Ltd | Wholesale & retail | 2023 |
| GC Estate Holdings Limited | Real estate | 2025 |
| GDC Legal Services Ltd | Professional & scientific | 2025 |
| Ge&A Ltd | Arts & recreation | 2019 |
| George Henry Capital Ltd | Financial services | 2025 |
| Georgie Soames Ltd | Manufacturing | 2024 |
| GF Aviation Ltd | Transport & logistics | 2026 |
| GJ England Property Services Limited | Real estate | 2026 |
| Glare Engineering Enterprises Limited | Wholesale & retail | 2025 |
| Global Automotive Products Limited | Wholesale & retail | 1994 |
| GMB Group London Ltd | Professional & scientific | 2012 |
| Gold Standard Cleaning Limited | Administrative & support | 2025 |
| Good Product Media Group Ltd | Wholesale & retail | 2024 |
| Gothbuy Limited | Other services | 1988 |
| Grass Putting Limited | Other services | 2022 |
| Grass Roots Grounds Maintenance Services Limited | Other services | 2000 |
| Grayson (Building) Limited | Construction | 1983 |
| Great Abington Produce Limited | Agriculture & fishing | 2008 |
| Great Blending Company Ltd | Manufacturing | 2023 |
| Great Stony Park Residents Association Ltd | Households | 2000 |
| Green Guard Facilities Ltd | Administrative & support | 2023 |
| Greenleaf Gardens & Aquatics Ltd | Administrative & support | 2020 |
| Gridiron Place Management Company Limited | Real estate | 2016 |
| Ground Rent Property Services Limited | Construction | 2003 |
| Grovetown Controls Limited | Construction | 2026 |
| GS Carcare Limited | Wholesale & retail | 2015 |
| GTM Engineering Limited | Manufacturing | 2016 |
| GWF Solutions for Business Limited | Professional & scientific | 2021 |
| H & M Property Holdings Ltd | Real estate | 2016 |
| H. Gordon Services Limited | Construction | 2014 |
| H. Padfield and Sons Limited | Agriculture & fishing | 1986 |
| H.S. Line Limited | Extraterritorial | 2021 |
| Hallmark Financial Services Limited | Financial services | 2005 |
| Hammad Developments Limited | Construction | 2021 |
| Hanbury Projects Ltd | Construction | 2024 |
| Happy Houseplants Limited | Wholesale & retail | 2018 |
| Hare Street Inns Limited | Real estate | 1976 |
| Harmer and Simmons Limited | Other services | 2012 |
| Harridec Ltd | Construction | 2010 |
| Harrison JP Homes Limited | Real estate | 2016 |
| Harry Gahagan Design Limited | Professional & scientific | 2017 |
| Hartridge Capital Ltd | Financial services | 2020 |
| Hayce Contractors Ltd | Construction | 2019 |
| Hayes & Co Plumbing & Heating Limited | Construction | 2006 |
| Hazelwood Lettings Limited | Real estate | 2026 |
| HBR Holdings Ltd | Financial services | 2026 |
| Health Development Solutions Ltd | Construction | 2021 |
| Hehir Ltd | Wholesale & retail | 2023 |
| Hellabys Limited | Construction | 1969 |
| Hepburn’S Beauty Limited | Other services | 2023 |
| Herons Farm Limited | Agriculture & fishing | 1978 |
| Herts & Essex Foods Limited | Hospitality | 2021 |
| Herts & Essex Logistics Limited | Transport & logistics | 2020 |
| Herts & Essex Maintenance Solutions Limited | Real estate | 2018 |
| HH Overseas Property Consultants Limited | Real estate | 2022 |
| HHB Investments Limited | Real estate | 2024 |
| High Laver Management Company Limited | Households | 2024 |
| High Ongar Village Store Limited | Other services | 2016 |
| Highams Park Pre-School Ltd | Education | 2026 |
| HIT Hunters TCG Limited | Wholesale & retail | 2024 |
| Hitch and SIP Ltd | Hospitality | 2025 |
| HMC Payroll Services Limited | Administrative & support | 2021 |
| Hollow Pond Limited | Arts & recreation | 2004 |
| Hollytrees Pre-School Ltd | Education | 2009 |
| Hornbeam Garages Limited | Wholesale & retail | 2019 |
| Hotel Reservations Limited | Administrative & support | 2002 |
| Hothouse Hub Limited | Professional & scientific | 2025 |
| House of Cardsx Ltd | Wholesale & retail | 2026 |
| House of Fontaine Limited | Manufacturing | 2010 |
| Howlett Electrical Solutions Limited | Construction | 2011 |
| HQ Installations Ltd | Construction | 2022 |
| HRK Properties Ltd | Real estate | 2023 |
| Hub of Early Years (H.E.Y) Academy Limited | Education | 2025 |
| Hugh Pearl (Land Drainage) Limited | Construction | 1955 |
| Hunter Property Maintenance Limited | Construction | 2006 |
| Hunters Residential Limited | Professional & scientific | 2014 |
| Hutchison Accountancy Limited | Professional & scientific | 2024 |
| Hutchison Bookkeeping Services Limited | Professional & scientific | 2026 |
| Hutchison Heating Ltd | Construction | 2023 |
| ID Interior Design (London) Limited | Wholesale & retail | 2010 |
| IM Right, HES RON Ltd | Professional & scientific | 2025 |
| Imperial Galore Limited | Agriculture & fishing | 2020 |
| Imperium Engineering Solutions Limited | Construction | 2017 |
| Import Trading Company Ltd | Wholesale & retail | 2025 |
| In-To-Hair Wickford Limited | Other services | 2002 |
| INBAREMA15 Ltd | Hospitality | 2022 |