| Garlima Ltd | Transport & logistics | 2025 |
| Garon Park 3G Limited | Arts & recreation | 2019 |
| Garon Park Bar Limited | Hospitality | 2015 |
| Garon Park Community Centre Limited | Arts & recreation | 1982 |
| Garon Park Community Interest Company | Arts & recreation | 2014 |
| Garrards Gourmet Burgers Ltd. | Hospitality | 2016 |
| Garrett (South East) Limited | Financial services | 2015 |
| Garrett Hospitality Limited | Hospitality | 2010 |
| Garrison Beach Limited | Construction | 2017 |
| Garwoodcourt Limited | Households | 2026 |
| Gastir Limited | Other services | 2021 |
| Gateway TRN Ltd | Education | 2024 |
| Gather International Limited | Information & communication | 2019 |
| Gathering Creators Ltd | Professional & scientific | 2025 |
| Gathering Holdings Ltd | Financial services | 2025 |
| Gathering Properties Ltd | Real estate | 2026 |
| Gauged Masonry Ltd | Construction | 2016 |
| Gavco Limited | Construction | 2015 |
| Gaze Abroad Limited | Administrative & support | 2013 |
| GB Garden Building Solutions Limited | Manufacturing | 2026 |
| GBT Consultancy Limited | Information & communication | 2017 |
| GBT Property Management Limited | Construction | 2018 |
| GC Executive Cars Limited | Transport & logistics | 2014 |
| GD Electrics Essex Limited | Construction | 2021 |
| GDM Techno Limited | Information & communication | 2012 |
| Gdmk Ltd | Information & communication | 2017 |
| GDW Training Ltd | Education | 2023 |
| Geal Aitch Holdings Ltd | Professional & scientific | 2020 |
| Geek Tech Essex Limited | Wholesale & retail | 2019 |
| Gelatos House (Catford) Ltd | Hospitality | 2018 |
| Gelatos House (Colchester) Ltd | Hospitality | 2016 |
| Gelatos House (Crewe) Ltd | Hospitality | 2018 |
| Gelatos House (Hastings) Ltd | Hospitality | 2016 |
| Gelatos House (Ipswich) Ltd | Hospitality | 2019 |
| Gemma Wood Creative Studio Limited | Information & communication | 2025 |
| GEN Yoga Ltd | Arts & recreation | 2024 |
| General FAB Ltd | Manufacturing | 2019 |
| Generations Building & Maintenance Limited | Construction | 2008 |
| Genesis Facilities Services Limited | Construction | 2014 |
| Genoa Energy Ltd | Administrative & support | 2019 |
| Gensa Property Ltd | Real estate | 2023 |
| Genserv Engineering Ltd | Professional & scientific | 2012 |
| Genset Electrical Ltd | Construction | 2021 |
| Gentry Mechanical Consultancy Ltd | Professional & scientific | 2024 |
| Georenew Ltd | Professional & scientific | 2021 |
| George Berwick Associates Limited | Education | 2012 |
| Germusha AKE Ltd | Hospitality | 2025 |
| Gesc International Ltd | Education | 2020 |
| GET Optimised Ltd | Health & social care | 2025 |
| Getcare Solutions Ltd | Hospitality | 2023 |
| Getdampproof Ltd | Professional & scientific | 2025 |
| GFH Garden Services Limited | Administrative & support | 2025 |
| GFH Property Holdings Limited | Real estate | 2025 |
| Ghilt Limited | Wholesale & retail | 2025 |
| Ghost Wraps Ltd | Manufacturing | 2025 |
| Gibbo Grips Ltd | Information & communication | 2023 |
| Gifs Media Limited | Professional & scientific | 2022 |
| Giles Wilson Law Limited | Professional & scientific | 2021 |
| Giles Wilson Trustees Limited | Financial services | 2022 |
| Gillies & Hawkes Ltd | Real estate | 2017 |
| Ginger and the Whisks Limited | Hospitality | 2016 |
| Giraffe Ideaworks Limited | Administrative & support | 1999 |
| Girovo Limited | Administrative & support | 2018 |
| Giurgiu Limited | Transport & logistics | 2015 |
| GJ Entertainment Limited | Professional & scientific | 2018 |
| GJC Electrical Consulting Limited | Construction | 2017 |
| Gjoni Ltd | Construction | 2025 |
| GK Networks Ltd | Administrative & support | 2008 |
| GK Nutrition Ltd | Health & social care | 2020 |
| GKC Shutters Ltd | Manufacturing | 2015 |
| GKM Plastering Limited | Construction | 2026 |
| GL Platinum Ltd | Extraterritorial | 2022 |
| Glacier IT Solutions Ltd | Extraterritorial | 2016 |
| Glass and General Maintenance Co. Ltd | Manufacturing | 2011 |
| Glass Office Solutions Limited | Construction | 2017 |
| Glen Construction Engineering Services Ltd | Construction | 2008 |
| Glenfield Management Limited Liability Partnership | | 2005 |
| Glenlee Limited | Construction | 2013 |
| Glitch Marketing Essex Ltd | Professional & scientific | 2023 |
| Global Financial Solutions Limited | Administrative & support | 2001 |
| Global Light Limited | Construction | 2002 |
| Global Social Innovators CIC | Other services | 2011 |
| Global Tech Pro Solutions Ltd | Information & communication | 2024 |
| Glowware & Clean Co. Limited | Wholesale & retail | 2025 |
| GLS Psychiatry Ltd | Education | 2020 |
| GLW Electrical Services Ltd | Construction | 2015 |
| GLW Holdings Limited | Professional & scientific | 2023 |
| GMB Developers Ltd | Construction | 2023 |
| Gmil Property Ltd | Real estate | 2025 |
| GMR Management Ltd | Professional & scientific | 2023 |
| GNS Solid Surfaces Limited | Construction | 2010 |
| Go Maintenance Group Ltd | Construction | 2025 |
| Go Venture Ltd | Arts & recreation | 2015 |
| Goddsson Limited | Financial services | 2023 |
| Gold Property Group Holdings Ltd | Financial services | 2025 |
| Gold Tanning Hadleigh Limited | Other services | 2025 |
| Golden APE Ltd | Arts & recreation | 2020 |
| Golden Hour Studio Ltd | Professional & scientific | 2024 |
| Golden Rock Real Estate Limited | Real estate | 2018 |
| Golden Standard Group Limited | Administrative & support | 2023 |