| Gamoda Limited | Real estate | 2023 |
| Garden Games Party Hire Ltd | Administrative & support | 2021 |
| Gardenature Limited | Wholesale & retail | 2005 |
| Garnet Pharmaceutical Limited | Professional & scientific | 2026 |
| Gary Perkins Transport Ltd | Transport & logistics | 2025 |
| GAS Appliance Safety Ltd | Construction | 2025 |
| Gasfit Ltd | Construction | 2019 |
| Gavriil Trans Ltd | Transport & logistics | 2022 |
| Geaf Limited | Information & communication | 2019 |
| Gemini Consultancy & Training Limited | Professional & scientific | 2026 |
| Gentsandcouk Ltd | Other services | 2025 |
| Germane Care Group Ltd | Health & social care | 2024 |
| Gerson Medical Limited | Health & social care | 2007 |
| GGT Management Ltd. | Households | 1991 |
| Giggle City Ltd | Extraterritorial | 2009 |
| Gilan Barber EN Ltd | Other services | 2024 |
| Giorgio Anto Ltd | Construction | 2015 |
| Girasal Limited | Administrative & support | 2023 |
| GJD Insulation Ltd | Construction | 2019 |
| Gjwpmc Ltd | Real estate | 2015 |
| Gkpj Group Limited | Extraterritorial | 2021 |
| Gkpj Waste Management Ltd | Water & waste | 2024 |
| Glass of Bubbly Limited | Information & communication | 2015 |
| Glen Baker & Sons Ltd | Construction | 2021 |
| Glenfinnan Investments Limited | Construction | 2015 |
| Glenridge House RTM Company Ltd | Households | 2026 |
| Global Marine Surveying Limited | Transport & logistics | 2000 |
| GMV Plumbing & Heating Ltd | Construction | 2020 |
| Go Class Ltd | Administrative & support | 2026 |
| Goals for Schools Ltd | Education | 2026 |
| GOK Taskin Limited | Hospitality | 2015 |
| Gold Hill Drinks Company Ltd | Hospitality | 2023 |
| Golden Curry Clacton Ltd | Hospitality | 2019 |
| Good Style Wear Limited | Construction | 2013 |
| Goodfordridge RTM Company Limited | Households | 2008 |
| Gorilla Groundworks & Utilities Ltd | Construction | 2022 |
| Gorse Lane Clutches Ltd | Wholesale & retail | 2023 |
| Goskola Limited | Education | 2025 |
| GP Property Rentals Ltd | Real estate | 2019 |
| Grady Draws Limited | Arts & recreation | 2020 |
| Grandma Lillys Delivery Limited | Hospitality | 2024 |
| Grandma Lillys Tea Rooms Ltd | Hospitality | 2023 |
| Grange Farm Campsite Ltd | Hospitality | 2019 |
| Granite & Quartz Unlimited Ltd | Manufacturing | 2019 |
| Grant's Court Management Company Limited | Real estate | 1989 |
| Grape Britton Ltd | Agriculture & fishing | 2023 |
| Grape Britton Vineyards Ltd | Agriculture & fishing | 2023 |
| Grape Britton Wines Ltd | Agriculture & fishing | 2023 |
| Great Clacton Pre-School Limited | Education | 2008 |
| Grecomex Ltd | Information & communication | 2026 |
| Green Frog Designs Limited | Manufacturing | 2009 |
| Green Light Solar Solutions Ltd | Construction | 2025 |
| Greenleaf Holdings Essex Limited | Real estate | 2025 |
| Greenleaf Pest Control Services Limited | Administrative & support | 2012 |
| Greensward Cafe Limited | Hospitality | 2003 |
| Greentec GAS Solutions Ltd | Construction | 2021 |
| Gregory Palmer Developments Ltd | Construction | 2022 |
| Greybear Properties Ltd | Real estate | 2017 |
| Griffon Groundworks and Civils Ltd | Construction | 2023 |
| Grifin Limited | Construction | 2019 |
| Grove Bar Ltd | Hospitality | 2017 |
| Growing Beyond Consulting Ltd | Professional & scientific | 2020 |
| Growth Hub Digital Marketing Ltd | Professional & scientific | 2025 |
| GTW Kitchens Ltd | Manufacturing | 2012 |
| Guardian Integrated Systems Limited | Administrative & support | 2000 |
| Guzzle & Munch Limited | Wholesale & retail | 1996 |
| GYF Talent Ltd | Administrative & support | 2021 |
| H & T Athletics Limited | Education | 2025 |
| H and H Nails 6 Ltd | Other services | 2024 |
| H J Car Sales Limited | Wholesale & retail | 2024 |
| H M L Builds Ltd | Construction | 2025 |
| H.B Structural Carpentry Ltd | Manufacturing | 2024 |
| Habel Ltd | Construction | 2026 |
| Hair @ NO.10 Limited | Other services | 2004 |
| Hair by DEE Dee's Ltd | Other services | 2025 |
| Halstead Holdings UK Ltd | Real estate | 2024 |
| Hamford Farming LLP | | 2007 |
| Hamilton Acoustic Solutions Ltd | Construction | 2012 |
| Hamilton Bespoke Limited | Manufacturing | 2025 |
| Hampstead Property Investments Ltd | Real estate | 2020 |
| Hannah's Cats Ltd | Agriculture & fishing | 2026 |
| Harbourside Management Company (Harwich) Limited | Households | 2021 |
| Hardy Heating and Plumbing Limited | Construction | 2023 |
| Harish Store Limited | Wholesale & retail | 2024 |
| Harkin Security Ltd | Information & communication | 2025 |
| Haroon Iqbal Ltd | Wholesale & retail | 2024 |
| Harper Fabric Engineering Ltd | Construction | 2023 |
| Harps Corporation Limited | Manufacturing | 2014 |
| Harris House Essex Ltd | Professional & scientific | 2025 |
| Harry's Holdings Ltd | Real estate | 2021 |
| Harvey & Nunn Brickwork Ltd | Construction | 2022 |
| Haslett and Family Ltd | Information & communication | 2025 |
| Haunting Ghost Hunts Ltd | Arts & recreation | 2026 |
| Havering Health Safety and Wellbeing Limited | Professional & scientific | 2024 |
| Hawkcharm Estates Limited | Households | 1989 |
| Hawkins Road Developments Limited | Real estate | 2013 |
| Hayes Gardens Road Ltd | Households | 2026 |
| HB Bathrooms and Boilers Ltd | Construction | 2023 |
| Hbht Ltd | Manufacturing | 2018 |
| HCS (Essex) Ltd | Construction | 2018 |