| Fxdeep Ltd | Financial services | 2025 |
| Fy-Fused Automation Ltd | Administrative & support | 2023 |
| G & D Construction & Plant Hire Ltd | Construction | 2020 |
| G & K Ventures Ltd | Financial services | 2021 |
| G a F French Limited | Construction | 2004 |
| G C S Taxis Ltd | Transport & logistics | 2024 |
| G D Coward Ltd | Construction | 2011 |
| G E Pike Limited | Wholesale & retail | 2010 |
| G-Ecds Tiger Moth Group Limited | Administrative & support | 2024 |
| G-Works Retail Limited | Wholesale & retail | 2017 |
| G.A.W Scaffolding Ltd | Construction | 2023 |
| G.Beatz CIC | Arts & recreation | 2021 |
| G.S Electrical (SE) Ltd | Manufacturing | 2026 |
| Gabe Sportswear Limited | Wholesale & retail | 2022 |
| Gadget Point Ltd | Wholesale & retail | 2024 |
| Gain Customer Success Limited | Information & communication | 2023 |
| Gaitx Limited | Wholesale & retail | 2024 |
| Galata Zorba Limited | Hospitality | 2025 |
| Galatea Brasserie Ltd | Hospitality | 2018 |
| Galaxy Line Ltd | Manufacturing | 2022 |
| Galaxy Metals Co., Ltd | Extraterritorial | 2013 |
| Galbuild Ltd | Construction | 2024 |
| Galena Associates Limited | Households | 2012 |
| Ganderings Ltd | Real estate | 2023 |
| Ganesiv Consultancy Limited | Information & communication | 2012 |
| Ganesiv Properties Limited | Real estate | 2023 |
| Ganquan Group Co., Ltd | Manufacturing | 2024 |
| Garden of England Property Management Ltd | Real estate | 2026 |
| Gardner & Co. (Kent) Limited | Construction | 1991 |
| Gary Stevens Electricals Limited | Construction | 2016 |
| Garyson Contracts Ltd | Construction | 2023 |
| Gaslec (Kent) Ltd | Construction | 2006 |
| Gatekeepers Chase (Freehold) Limited | Households | 2017 |
| Gateway Associates (UK) Ltd | Professional & scientific | 2012 |
| Gawa Limited | Construction | 2024 |
| Gayathri Fishbar Ltd | Hospitality | 2025 |
| Gayathri Takeaway Ltd | Hospitality | 2025 |
| Gbeuuk Rentals Limited | Real estate | 2023 |
| Gbonnie Property Solutions Ltd | Real estate | 2025 |
| GC London Consultant Limited | Information & communication | 2017 |
| Gcdj Venture LLP | | 2018 |
| GCO Services Limited | Other services | 2019 |
| GCR Taxi Limited | Transport & logistics | 2026 |
| Gdsr Group Ltd | Transport & logistics | 2024 |
| GEM of Essex Limited | Hospitality | 2018 |
| GEM of Norwich Ltd | Hospitality | 2019 |
| Gems Kent Limited | Real estate | 2017 |
| Gemsolutions Consulting Limited | Information & communication | 2014 |
| Genesis Scaffolding Services Limited | Construction | 1999 |
| Geneticks Limited | Health & social care | 2016 |
| Gentcher Railworks Limited | Construction | 2022 |
| Gentleman's Crew Limited | Other services | 2017 |
| GEO Primage Ltd | Wholesale & retail | 2023 |
| GEO Subs Ltd | Health & social care | 2020 |
| Geologic Systems Limited | Information & communication | 2026 |
| Geomatics / Land Surveying Engineering Limited | Professional & scientific | 2017 |
| Geometric Civils Limited | Construction | 2018 |
| GFC Holdings Limited | Professional & scientific | 2007 |
| GG Telecoms Ltd | Information & communication | 2025 |
| Ggfc Consultancy Ltd | Other services | 2023 |
| GGS Concrete Limited | Manufacturing | 2026 |
| GHD Building Solutions Limited | Construction | 2010 |
| Ghost Entertainment Ltd | Other services | 2021 |
| Ghost Hunt Events Limited | Arts & recreation | 2012 |
| GI Equine Ltd | Agriculture & fishing | 2026 |
| GIA Haulage Ltd | Transport & logistics | 2022 |
| Gibbons Roofing Limited | Construction | 2022 |
| Gibbs Roofing Southern Ltd | Construction | 2024 |
| Gibson Plumbing Supplies Kent Limited | Wholesale & retail | 2019 |
| Gibson Plumbing Supplies Limited | Wholesale & retail | 2018 |
| Giddings Fruit UK Limited | Wholesale & retail | 2017 |
| Gift ERA Limited | Real estate | 2017 |
| Gigatek Ltd | Information & communication | 2021 |
| Gigzzee Ltd | Financial services | 2024 |
| Gihon Global Services Ltd | Real estate | 2020 |
| Giicii Ltd | Construction | 2023 |
| Gillingham 1969 Limited | Extraterritorial | 2014 |
| Gillingham Anchorians Sports Facility Limited | Arts & recreation | 2003 |
| Gillingham and District Angling Association Limited | Arts & recreation | 1974 |
| Gillingham and Mere Cars Limited | Transport & logistics | 2004 |
| Gillingham Cabs Ltd | Transport & logistics | 2026 |
| Gillingham Cafe Ltd | Hospitality | 2012 |
| Gillingham Cafe PIE & Mash Ltd | Hospitality | 2019 |
| Gillingham Chef Limited | Hospitality | 2021 |
| Gillingham Clubhouse Ltd | Hospitality | 2016 |
| Gillingham Convenience Store Ltd | Wholesale & retail | 2016 |
| Gillingham FC Foundation Limited | Education | 2024 |
| Gillingham Fire & Slice Ltd | Hospitality | 2025 |
| Gillingham Fish Shop Limited | Wholesale & retail | 2023 |
| Gillingham Football Club Ltd | Arts & recreation | 1893 |
| Gillingham Glass Company Limited | Construction | 2005 |
| Gillingham Jumpers Trampoline Club Limited | Arts & recreation | 1994 |
| Gillingham M C Ltd | Wholesale & retail | 2012 |
| Gillingham Marina Holdings Ltd | Financial services | 2021 |
| Gillingham Marina Ltd | Transport & logistics | 2021 |
| Gillingham Marina Management Ltd | Transport & logistics | 2021 |
| Gillingham Marine Engineering Ltd | Manufacturing | 2021 |
| Gillingham Masonic Club Company Limited(The) | Hospitality | 1921 |
| Gillingham Mini Market Ltd | Wholesale & retail | 2025 |
| Gillingham PUB Co Limited | Hospitality | 2025 |