| G&D International Trading Ltd | Wholesale & retail | 2019 |
| G. M. Imber & Sons Limited | Administrative & support | 2005 |
| G.W.Resident Co.,Limited | Households | 1967 |
| G2H Group Ltd | Hospitality | 2015 |
| G5 Consultancy Services Limited | Professional & scientific | 2016 |
| Gadget Church | Administrative & support | 2013 |
| Gaia's Glow Ltd | Manufacturing | 2026 |
| Gaistwood Limited | Extraterritorial | 2011 |
| Galaxy Medical Consultants Ltd | Health & social care | 2025 |
| Galley Developers Limited | Wholesale & retail | 2001 |
| Gameblitz Ltd | Information & communication | 2025 |
| Gardasc Properties Limited | Real estate | 2025 |
| Garden 1959 Limited | Extraterritorial | 2013 |
| Garnham H Bewley Limited | Real estate | 2009 |
| GAS and Electric Services (UK) Limited | Construction | 2015 |
| Gat-Kos Ltd | Financial services | 2020 |
| Gat-Rad Ltd | Financial services | 2020 |
| Gates Accountancy Services Ltd | Professional & scientific | 2021 |
| Gates Gardens Ltd | Administrative & support | 2023 |
| Gatwick Motorzone Limited | Wholesale & retail | 2000 |
| Gavmark Limited | Real estate | 2004 |
| GB Brickwork Ltd | Construction | 2013 |
| GB Prestigious Properties Ltd | Real estate | 2022 |
| GB Services (UK) Limited | Construction | 1998 |
| Gbrt Enterprises Limited | Administrative & support | 2015 |
| Gclinph Limited | Health & social care | 2016 |
| Gdtalent Limited | Administrative & support | 2009 |
| GEH Consultancy Limited | Hospitality | 2022 |
| Gemstone Brands Ltd | Wholesale & retail | 2016 |
| Geninova Biotech UK Ltd | Wholesale & retail | 2023 |
| Geoteck Ltd | Information & communication | 2012 |
| Gerald Carew Consulting Limited | Professional & scientific | 2020 |
| Gerry Dixon Ltd | Wholesale & retail | 2023 |
| GET a Grip Bicycle Workshop Ltd | Wholesale & retail | 2011 |
| Getconcierge Ltd | Administrative & support | 2025 |
| Gheko Design Ltd | Professional & scientific | 2022 |
| Giffon Credit Ltd | Financial services | 2025 |
| Giffon Syndicate Ltd | Financial services | 2025 |
| Giga Bits Ltd | Wholesale & retail | 2025 |
| Gilchrist Holdings Ltd | Financial services | 2022 |
| Gildmere Limited | Professional & scientific | 2017 |
| GJ Plumbing & Heating (Kent) Limited | Construction | 2020 |
| Glanfield (UK) Limited | Wholesale & retail | 2011 |
| Glass-Tek Glazing Systems Ltd | Construction | 2024 |
| Gleamteamhomeservices Ltd | Administrative & support | 2024 |
| Glendale (Felbridge) Management Limited | Households | 2013 |
| Glenn Freight Services Limited | Transport & logistics | 1974 |
| Global Bond Capital Ltd | Financial services | 2026 |
| Global Commerce Service Ltd | Administrative & support | 2020 |
| Global Eternity Ltd | Professional & scientific | 2026 |
| Global Exhibition Works Limited | Wholesale & retail | 2014 |
| Global Financial Investor Ltd. | Financial services | 2011 |
| Global Life Science Hub Ltd | Administrative & support | 2021 |
| Global Lifestyle Solutions Ltd | Other services | 2025 |
| Gm-X Innovation Ltd | Wholesale & retail | 2025 |
| GMR Building Projects Ltd | Construction | 2025 |
| Gndt Properties Limited | Real estate | 2026 |
| Gnoetic Limited | Professional & scientific | 2026 |
| Go L&D Limited | Administrative & support | 2016 |
| Goat Manor Limited | Construction | 2014 |
| Godiva Residential Homes Limited | Real estate | 2016 |
| Gojaspa Limited | Professional & scientific | 2010 |
| Golambda Ltd | Information & communication | 2014 |
| Gold Group House Ltd | Real estate | 2020 |
| Gold Group Limited | Administrative & support | 2000 |
| Golden Child Productions Ltd | Information & communication | 2017 |
| Golden Golf Ltd | Wholesale & retail | 2026 |
| Golden Labs Ltd | Manufacturing | 2026 |
| Goldfinger Bars Limited | Hospitality | 2010 |
| Goldgrave Properties Limited | Real estate | 1999 |
| Goldie & Beygz Ltd | Hospitality | 2026 |
| Golfguard Limited | Financial services | 1989 |
| Good Governance Africa | Administrative & support | 2003 |
| Good Reputations Ltd | Administrative & support | 2013 |
| Goodfinde Limited | Wholesale & retail | 2011 |
| Goodman Hallam Limited | Real estate | 2017 |
| Goodsail Consulting Ltd | Administrative & support | 2015 |
| Gosling Construction Limited | Construction | 2020 |
| Gothic House Ltd | Hospitality | 2023 |
| Gottinger.D.J. Ltd | Wholesale & retail | 2020 |
| GRA Geal Ltd | Administrative & support | 2025 |
| Grace Contract Management Ltd | Construction | 2022 |
| Grange (Felcourt) Management Company Limited(The) | Households | 1958 |
| Granville Park Partners Ltd | Professional & scientific | 2024 |
| Grasshopper Web Consulting Limited | Information & communication | 2010 |
| Grdj Technology Ltd | Information & communication | 2013 |
| Great Ascent Ltd. | Real estate | 2016 |
| Great Water Wood Limited | Real estate | 2023 |
| Green Hedges Management Company Limited | Real estate | 2005 |
| GREEN2CLEAN Pressure Washing Services Limited | Administrative & support | 2024 |
| Greene Park Place Management Company Limited | Households | 2020 |
| Greener Machines Ltd | Manufacturing | 2016 |
| Greenstede Penthouse Ltd | Real estate | 2021 |
| Greentech Pro Ltd | Construction | 2025 |
| Greybury Roads Management Company Limited | Households | 1982 |
| Griffin Trading (U.K.) Limited | Professional & scientific | 1979 |
| Grip Tapes Media Ltd | Information & communication | 2022 |
| Grove Limited | Professional & scientific | 2022 |
| Grove Residents Association Limited | Real estate | 1994 |
| Grovemoor Associates Limited | Real estate | 2000 |