| Gary Elliott Consulting Ltd | Financial services | 2013 |
| Gary James Mcqueen Digital Ltd | Other services | 2021 |
| Gary James Mcqueen Licensing Ltd | Other services | 2021 |
| Gatton Developments Limited | Construction | 1989 |
| Gatwick Green 1 Limited | Real estate | 2021 |
| Gatwick Green 2 Limited | Real estate | 2021 |
| Gatwick Green 3 Limited | Real estate | 2021 |
| Gatwick Green Limited | Financial services | 2021 |
| Gavin Barnes Building Contractors Limited | Construction | 2005 |
| GC Psychology Consulting Limited | Health & social care | 2022 |
| Gegg Consulting Services Ltd | Professional & scientific | 2021 |
| Genesis Motor UK Limited | Wholesale & retail | 2019 |
| GEO Communication Arts Limited | Professional & scientific | 1998 |
| GEO Style Ltd | Arts & recreation | 2018 |
| Geoff Mcdonald Consulting Limited | Professional & scientific | 2016 |
| George Financial Consulting Ltd | Financial services | 2012 |
| Gerberia Limited | Professional & scientific | 2024 |
| GET That Glow Limited | Other services | 2021 |
| Geteconomics Ltd | Professional & scientific | 2018 |
| Getner Roofing Ltd | Construction | 2026 |
| GGL Partners Ltd | Professional & scientific | 2022 |
| GGS Southern Limited | Wholesale & retail | 2003 |
| Giant Smile Ltd | Health & social care | 2014 |
| Gigate Ltd | Wholesale & retail | 2024 |
| Gigi Properties 1 Ltd | Real estate | 2021 |
| Gilbronel Limited | Wholesale & retail | 2021 |
| Giles Mead Residents'Association Limited | Households | 1968 |
| Gillroy Associates Limited | Extraterritorial | 2011 |
| Ginge Plumbing and Heating Ltd | Administrative & support | 2017 |
| Ginger Beard Consulting Limited | Information & communication | 2016 |
| Giralabs Limited | Professional & scientific | 2025 |
| Gladstone House (Epsom) Management Company Limited | Households | 2004 |
| Glen Athol Consulting Limited | Information & communication | 2011 |
| Glendene Avenue Residents' Association Limited | Households | 1977 |
| Glenlyon Court 2021 Limited | Households | 2021 |
| Glenlyon Management Limited | Households | 1990 |
| Glicer Ltd | Health & social care | 2019 |
| Glo-Bell London Ltd | Administrative & support | 2013 |
| Global Asset Management Advisers Ltd | Professional & scientific | 2023 |
| Global Health & Wellness Platforms Limited | Professional & scientific | 2019 |
| Global Sapphire Ltd | Professional & scientific | 2015 |
| Glynn Workspace Limited | Construction | 2014 |
| GM UK Properties Ltd | Real estate | 2023 |
| GMM Project Solutions Ltd | Professional & scientific | 2018 |
| Go Broadcast Ltd | Information & communication | 2022 |
| Golden Gate Management Company Limited | Real estate | 2017 |
| Golden Thai Limited | Hospitality | 2020 |
| Goldline Media Properties Limited | Administrative & support | 2007 |
| Goldney Electronics Ltd | Wholesale & retail | 2006 |
| Golf Side Ltd | Other services | 2022 |
| Golfable Ltd | Wholesale & retail | 2025 |
| Good Nick Clothing Limited | Wholesale & retail | 2022 |
| Good Oaks Foods Ltd | Manufacturing | 2024 |
| Goodtown CIC | Arts & recreation | 2025 |
| Gopair Ltd | Information & communication | 2025 |
| Gorvette Media Ltd | Administrative & support | 2011 |
| Gould International UK Limited | Wholesale & retail | 1934 |
| Gould Paper Sales UK Limited | Wholesale & retail | 1979 |
| Gould Publication Papers UK Limited | Wholesale & retail | 2002 |
| GR Rentals Ltd | Real estate | 2025 |
| GR1214 Ltd | Real estate | 2025 |
| Grace and Flavour C.I.C. | Agriculture & fishing | 2009 |
| Graham Myles Ltd | Extraterritorial | 2023 |
| Grange Road (Guildford) Residents Association Limited | Households | 1986 |
| Granger Developments Limited | Administrative & support | 2013 |
| Granherne Limited | Construction | 1980 |
| Gre-Energise Limited | Other services | 2017 |
| Great Bookham Tandoori Ltd | Hospitality | 2020 |
| Great Brighams Mead Management Limited | Real estate | 2025 |
| Great Ledge Devon Limited | Real estate | 2008 |
| Greatest Ideas Limited | Wholesale & retail | 2021 |
| Green CAB Services Limited | Transport & logistics | 2021 |
| Green Dene Holdings Limited | Financial services | 2024 |
| Green Dene Property Company Limited | Administrative & support | 2009 |
| Green Orchid Food Ltd | Wholesale & retail | 2024 |
| Green Perfection Limited | Administrative & support | 2010 |
| Green Sunflower Limited | Hospitality | 2021 |
| Greenlight Asset Holdings 1 Limited | Energy | 2024 |
| Greenlight Engineering Group Limited | Financial services | 2022 |
| Greenlight Engineering Limited | Professional & scientific | 2009 |
| Greenlight Facility Management Limited | Administrative & support | 2022 |
| Greenlight Fit OUT Limited | Construction | 2022 |
| Greenlight House (26 Bridge Street) Limited | Real estate | 2025 |
| Greenlight Property Management Limited | Professional & scientific | 2024 |
| Greenlight Renewable Energy Limited | Construction | 2015 |
| Greenoak (Whetstone) Management Ltd | Households | 2023 |
| Greville Court Residents' Association Limited | Households | 1982 |
| Greville Park Limited | Professional & scientific | 2004 |
| Grey Monarch Limited | Information & communication | 2008 |
| Grill House London Ltd | Hospitality | 2019 |
| Groove Aesthetics & Beauty Ltd | Other services | 2022 |
| Grosvenor Hartley Ltd | Professional & scientific | 2020 |
| Ground UP Contractors Ltd | Construction | 2026 |
| Grove - TK | Manufacturing | 1973 |
| Grove Farm Glamping - Surrey Ltd | Hospitality | 2021 |
| Groveside Business Mentoring Ltd | Professional & scientific | 2023 |
| Grow UP Finance Ltd | Professional & scientific | 2025 |
| Growth Hackers Ltd | Professional & scientific | 2022 |
| Gruftex Limited | Real estate | 2018 |
| GS Materials Consultants Ltd | Professional & scientific | 2021 |