| Gatwick Flexitaxi Ltd | Transport & logistics | 2024 |
| Gatwick Glym Ltd | Wholesale & retail | 2023 |
| Gatwick Gutters Ltd | Administrative & support | 2025 |
| Gatwick Handyman Ltd | Construction | 2024 |
| Gatwick Heavenly Homes Ltd | Real estate | 2026 |
| Gatwick Homes Ltd | Real estate | 2010 |
| Gatwick Lettings Limited | Real estate | 2008 |
| Gatwick Links Limited | Transport & logistics | 2005 |
| Gatwick Meet and Greet Limited | Transport & logistics | 2025 |
| Gatwick Minibuses Ltd | Transport & logistics | 2017 |
| Gatwick Mobility Cars Limited | Transport & logistics | 2019 |
| Gatwick Motor Trading Ltd | Wholesale & retail | 2022 |
| Gatwick Noble Parking Ltd | Transport & logistics | 2016 |
| Gatwick Park and FLY Ltd | Administrative & support | 2017 |
| Gatwick Production Studios Ltd | Information & communication | 2021 |
| Gatwick Security Services Ltd | Administrative & support | 2024 |
| Gatwick Stays Ltd | Hospitality | 2026 |
| Gatwick Sussex Taxis and Cars Ltd | Transport & logistics | 2023 |
| Gatwick Warriors Football Club CIC | Arts & recreation | 2022 |
| Gatwick Wheelchair Cars Ltd | Transport & logistics | 2021 |
| Gatwick Wheels Ltd | Wholesale & retail | 2020 |
| Gatwickcablines Ltd | Transport & logistics | 2026 |
| Gaved IT Limited | Information & communication | 2018 |
| Gaye & Sons Consultancy Ltd | Professional & scientific | 2016 |
| Gayton Road Dental Care Ltd | Health & social care | 2011 |
| GB Broker Ltd | Financial services | 2023 |
| GB Grand Slam Limited | Arts & recreation | 2025 |
| GB Power & Control Services Ltd | Manufacturing | 2022 |
| GB Power Generators Ltd | Extraterritorial | 2022 |
| GB Power Investments Ltd | Extraterritorial | 2022 |
| GB Power Switchgear Ltd | Extraterritorial | 2022 |
| GBA Marketing Ltd | Professional & scientific | 2023 |
| GBL Courier Ltd | Transport & logistics | 2025 |
| GBS Consulting and Accounting Ltd | Professional & scientific | 2026 |
| GBX Couriers Ltd | Transport & logistics | 2018 |
| GD47 Ltd | Hospitality | 2024 |
| GDB Trading Ltd | Arts & recreation | 2013 |
| GDI Global Gateway | Other services | 2025 |
| GDP Services Ltd | Construction | 2016 |
| Gecko Secure IT Consulting Limited | Information & communication | 2023 |
| Geebor Development Company Limited | Real estate | 1993 |
| Geenii Ltd | Construction | 2022 |
| Gelstarr Windows Ltd | Wholesale & retail | 2018 |
| Gemfy Studios Ltd | Information & communication | 2018 |
| Gems Jewels & Co Ltd | Professional & scientific | 2024 |
| Genaide Pharmaceutical Limited | Wholesale & retail | 2022 |
| Generator Hire Limited | Construction | 2022 |
| Genesis Kitchens Ltd | Manufacturing | 2025 |
| Genesys Integrated Systems Ltd | Extraterritorial | 2020 |
| Genetics Sports Ltd | Manufacturing | 2025 |
| Genie Vaults Limited | Wholesale & retail | 2025 |
| Gentle Care Private Limited | Health & social care | 2012 |
| Gentle Dental & Implant Care Limited | Health & social care | 2007 |
| Gentle-Souls Care Ltd | Health & social care | 2026 |
| Gentlemen at Red Limited | Hospitality | 2008 |
| Genz Hub Ltd | Information & communication | 2025 |
| Georeal.Est Ltd | Real estate | 2026 |
| George and SON Limited | Manufacturing | 2010 |
| Georgestyleservice Ltd | Transport & logistics | 2023 |
| Geotechnical Engineering Solutions Ltd | Professional & scientific | 2025 |
| Gepe Construction Ltd | Construction | 2025 |
| Gerrity Properties Limited | Real estate | 2022 |
| GET Migration Ltd | Professional & scientific | 2023 |
| GET WON Ltd | Wholesale & retail | 2024 |
| Getz Transfer Ltd | Transport & logistics | 2023 |
| GEW (UV) Limited | Financial services | 1995 |
| GEW UV Holdings Limited | Financial services | 2018 |
| Ghost Note Engineering Ltd | Manufacturing | 2023 |
| Giant Panda Limited | Hospitality | 2024 |
| Gibbs & Lund Limited | Other services | 2001 |
| Gibstoppers Plastering and Maintenance Ltd Limited | Construction | 2024 |
| Gideonson Consulting Ltd | Professional & scientific | 2026 |
| Gifford Chance Ltd | Wholesale & retail | 2020 |
| Gilead Investments Limited | Real estate | 2022 |
| Giles Hornby Group Ltd | Real estate | 2024 |
| Gillec Property Maintenance Ltd | Construction | 2023 |
| Gillian Gadd & Co. Ltd | Information & communication | 2011 |
| Gills Nails Ltd | Other services | 2023 |
| Ginger Horticulture Ltd | Professional & scientific | 2013 |
| Ginti Ltd | Other services | 2020 |
| Girish Properties Ltd | Real estate | 2026 |
| Gisca Solutions Limited | Transport & logistics | 2018 |
| Give a Dog a Bone Environmental Ltd | Water & waste | 2017 |
| Give a Dog a Bone UK C.I.C. | Wholesale & retail | 2012 |
| Give a Future | Education | 2008 |
| GL (Bromley) Ltd | Arts & recreation | 2023 |
| GL (Sutton) Ltd | Arts & recreation | 2022 |
| GL (Swansea) Ltd | Arts & recreation | 2026 |
| GLA Aesthetics Ltd | Other services | 2026 |
| Glad Limited | Information & communication | 2024 |
| Glamour Crawley Limited | Other services | 2019 |
| Glamunity Ltd | Information & communication | 2026 |
| Glasgow Tyres & Autocare Limited | Wholesale & retail | 2024 |
| Glassmongers Limited(The) | Real estate | 1983 |
| Gleamify Life Ltd | Wholesale & retail | 2025 |
| Gleneagles Court (Crawley) Management Limited | Households | 1988 |
| Global 24-7SHOPS Ltd | Wholesale & retail | 2020 |
| Global Business Exchange Ltd | Information & communication | 2025 |
| Global Development Solutions Ltd | Construction | 2006 |
| Global Health Providers Ltd | Health & social care | 2023 |