| Fudo Property Ltd | Real estate | 2020 |
| Fuel Rectifiers Limited | Wholesale & retail | 2014 |
| Full Circle Fire Ltd | Administrative & support | 2024 |
| Full Circle Water Ltd | Administrative & support | 2024 |
| Full Repertoire Limited | Professional & scientific | 2016 |
| Fully Caffeinated Design Ltd | Professional & scientific | 2019 |
| Functioneering UK Limited | Professional & scientific | 2022 |
| Fundspace Ltd | Financial services | 2021 |
| Fungi Biotics Limited | Agriculture & fishing | 2021 |
| Furora Media Ltd | Information & communication | 2014 |
| Fuson Trade Co. Ltd | Administrative & support | 2024 |
| Future Forty Four Limited | Professional & scientific | 2020 |
| Future Makers Media Limited | Other services | 2020 |
| Futurefile Limited | Administrative & support | 2017 |
| G C Wilson & Co Limited | Construction | 2021 |
| G O Fencing Ltd | Construction | 2025 |
| G P Plant Repairs Limited | Construction | 2006 |
| G T Management Limited | Real estate | 2006 |
| G.B. Design Bespoke Joinery Ltd | Construction | 2019 |
| G.E. Restoration Ltd | Construction | 2013 |
| G.M.B. Management Limited | Professional & scientific | 2014 |
| G2M the Mortgage House Limited | Financial services | 2019 |
| G4 Sports Group Limited | Arts & recreation | 2025 |
| Gadget Box Limited | Other services | 2017 |
| Gaelite UK Ltd | Arts & recreation | 2015 |
| GAF Commercial Limited | Construction | 2023 |
| Gager Consulting Limited | Administrative & support | 2012 |
| Galley Sinks Ltd | Wholesale & retail | 2026 |
| Garcia Manufacturing Engineering Ltd | Professional & scientific | 2020 |
| Garpgro Limited | Construction | 2022 |
| Garrorena and Company Ltd | Professional & scientific | 2019 |
| Gary DAS Limited | Professional & scientific | 2017 |
| Gary Derbridge Ltd | Professional & scientific | 2015 |
| Gateway Community Training CIC | Education | 2019 |
| Gateway Hospitality Recruitment Ltd | Administrative & support | 2011 |
| Gateway House (Wickford) Limited | Construction | 2019 |
| Gatland Group Ltd | Administrative & support | 2024 |
| Gauld's Mortgages Ltd | Financial services | 2024 |
| Gavin Jacobs Investments Limited | Real estate | 2019 |
| Gayener Kennels Ltd | Agriculture & fishing | 2026 |
| GB Essex Ltd | Education | 2022 |
| Gcaam Limited | Real estate | 2018 |
| GDM Holdings Limited | Financial services | 2008 |
| GDM Investments Limited | Financial services | 2017 |
| GDM Management LLP | | 2008 |
| Geoff Page Engineering Limited | Manufacturing | 2021 |
| Geomatch Limited | Administrative & support | 2023 |
| George a. Sherriff Limited | Wholesale & retail | 2007 |
| Georgian Surveys Limited | Professional & scientific | 2015 |
| Georgina Beauty Rooms Limited | Other services | 2015 |
| Gfcv Limited | Information & communication | 2026 |
| Giant Hire Ltd | Administrative & support | 2025 |
| Gibbons Engineering Group Ltd | Manufacturing | 1978 |
| Gigi Design Associates Limited | Wholesale & retail | 2023 |
| Gilbey Compliance Group Ltd | Professional & scientific | 2025 |
| Gills Motors Ltd | Wholesale & retail | 2023 |
| Gimli Properties Limited | Real estate | 2020 |
| Giri & Sons Limited | Hospitality | 2025 |
| GJL Services Limited | Financial services | 2015 |
| GJS Housing Ltd | Real estate | 2025 |
| Gjsmerchco Ltd | Wholesale & retail | 2024 |
| GKH Building Services Limited | Construction | 2019 |
| Gladwell Bookkeeping Ltd | Professional & scientific | 2023 |
| Glazing Solutions Essex Limited | Construction | 2025 |
| Glebe Fernlea Ltd | Real estate | 2015 |
| Glenlee Construction Limited | Construction | 1992 |
| Glenord Limited | Financial services | 2009 |
| Global Marine Transport Agency Limited | Financial services | 1999 |
| GLS Lighting Enterprises Limited | Professional & scientific | 2007 |
| Gnome Coffee Limited | Hospitality | 2025 |
| Go Teach Maths Ltd | Education | 2021 |
| Go Traveller Limited | Wholesale & retail | 2023 |
| Goals and Guards Limited | Arts & recreation | 2026 |
| Goat Hall Farm Limited | Agriculture & fishing | 1944 |
| Gold Earth Organics Ltd | Wholesale & retail | 2024 |
| Golden Palace Foods Limited | Manufacturing | 2020 |
| Golden Sand Inn Ltd | Hospitality | 2019 |
| Golf Dynamica Ltd | Wholesale & retail | 2025 |
| Good Karma Public Houses Limited | Hospitality | 2018 |
| Gower Bros. Limited | Construction | 2004 |
| Grab and Go Recycling Services Ltd. | Wholesale & retail | 2018 |
| Grand Mechanical Services Limited | Construction | 2023 |
| Grangewood Financial Management Limited | Financial services | 1997 |
| Granite Consulting Limited | Information & communication | 2002 |
| Granite Quartz Worktops Ltd | Other services | 2025 |
| Grass-Science Ltd | Agriculture & fishing | 2011 |
| Graymoose Ltd | Real estate | 1997 |
| Great Totham Stores Limited | Wholesale & retail | 2012 |
| Green Deal Essex Limited | Water & waste | 2013 |
| Green Lane Land Rovers Ltd | Wholesale & retail | 2013 |
| Green Marine (Boatyard) Limited | Transport & logistics | 2021 |
| Green Recycling Limited | Water & waste | 2001 |
| Green Tree Group Limited | Professional & scientific | 2024 |
| Greener Waste (Cambridgeshire) Ltd | Water & waste | 2025 |
| Greener Waste (Essex) Ltd | Water & waste | 2025 |
| Greener Waste (Norfolk) Ltd | Water & waste | 2025 |
| Greener Waste (Suffolk) Ltd | Water & waste | 2025 |
| Greener Waste Group Ltd | Financial services | 2025 |
| Greenhouse Integration Limited | Professional & scientific | 2011 |
| Greensurv Group Ltd | Professional & scientific | 2024 |