| GAO Hove Ltd | Real estate | 2018 |
| Garage at NO 50 Ltd | Financial services | 2024 |
| Garcia Trading Estate Limited | Households | 1985 |
| Garden Bar Property Company Ltd | Real estate | 2026 |
| Gardeners of Eden Limited | Administrative & support | 2006 |
| Garner Ventures Limited | Information & communication | 2019 |
| Garnett Fine Art Ltd | Professional & scientific | 2019 |
| Garvinack Solar Farm Limited | Energy | 2014 |
| GAS Heat Pump Services Ltd | Other services | 2017 |
| Gate Technologies AF Limited | Manufacturing | 2017 |
| Gate Technologies Limited | Other services | 1996 |
| Gate Technology Systems Ltd | Manufacturing | 2018 |
| Gaten Productions Limited | Professional & scientific | 2023 |
| Gatewell Productions Limited | Other services | 2012 |
| GB Hardings Limited | Administrative & support | 2026 |
| Gbarden Investments Limited | Real estate | 2016 |
| Gbarden Limited | Information & communication | 2015 |
| Gbecks Ltd | Hospitality | 2026 |
| GBF Trustees Limited | Administrative & support | 2021 |
| GCI Limited | Information & communication | 1999 |
| GEM Project Management Ltd | Administrative & support | 2020 |
| Gema Materials Limited | Professional & scientific | 2014 |
| Gemosphere Natural Gems Ltd | Manufacturing | 2022 |
| GEN Milling UK Ltd | Wholesale & retail | 2026 |
| General Domestic Ltd | Administrative & support | 2025 |
| Generation Game Limited | Professional & scientific | 2012 |
| Generativework.Space Limited | Professional & scientific | 2018 |
| Genesis Performing Arts Ltd | Education | 2022 |
| Genetype UK Limited | Wholesale & retail | 2022 |
| Geneva Investment Group Limited | Real estate | 2000 |
| Geneva Investments (UK) Limited | Extraterritorial | 1999 |
| Geneva Property (UK) Limited | Real estate | 2001 |
| Genome Science | Administrative & support | 2015 |
| Geodesic Limited | Information & communication | 2001 |
| Geom Lighting Ltd | Manufacturing | 2021 |
| George Findlay Ltd | Professional & scientific | 2026 |
| George IV Mansions (Brighton) RTM Company Limited | Households | 2008 |
| Georgia Christou Limited | Arts & recreation | 2022 |
| Georgian House Freehold Limited | Households | 1991 |
| Geoyd G Yiangou Ltd | Health & social care | 2018 |
| Gepaul Ltd | Construction | 2021 |
| GET Cutie Ltd | Wholesale & retail | 2003 |
| GET Glossy Limited | Other services | 2023 |
| GET Hooked- West Sussex Ltd | Health & social care | 2019 |
| GET Peak Ltd | Wholesale & retail | 2020 |
| GG-172-302 Limited | Real estate | 2021 |
| Ggdental Limited | Health & social care | 2022 |
| Ghaleb Property Investments Ltd | Real estate | 2024 |
| Ghali & Geres Ltd | Health & social care | 2024 |
| GHC Sussex Limited | Professional & scientific | 2018 |
| Ghostware Ltd | Professional & scientific | 2014 |
| GI Influence Ltd | Arts & recreation | 2025 |
| Gianzito Limited | Hospitality | 2014 |
| Gibbs Global Sourcing Limited | Wholesale & retail | 2025 |
| Gifts and Goodies Limited | Wholesale & retail | 2025 |
| Gigi’S Angels UK Ltd | Administrative & support | 2026 |
| Gigz Management Ltd | Arts & recreation | 2010 |
| Gilberts Gaffs Ltd | Financial services | 2025 |
| Gilberts Law Limited | Professional & scientific | 2009 |
| Gilwood Finance Ltd | Wholesale & retail | 2026 |
| Gilyard Properties Limited | Real estate | 2023 |
| Gingerscience Ltd | Manufacturing | 2015 |
| GJ Wholesale Flooring Ltd | Wholesale & retail | 2026 |
| GK Consultancy Services Ltd | Financial services | 2001 |
| GK Hasi Construction Ltd | Construction | 2024 |
| Glad Group Limited | Wholesale & retail | 2023 |
| Glass 22 Ltd | Construction | 2024 |
| Glass Onion Films Ltd | Information & communication | 2020 |
| Glasstec (Southern) Limited | Construction | 1990 |
| Glencura Limited | Administrative & support | 2010 |
| Glendale Chimney Sweep Ltd | Administrative & support | 2026 |
| Glew Estates Ltd | Real estate | 2022 |
| Glew Residential Ltd | Real estate | 2024 |
| Global Active Study Ltd | Education | 2014 |
| Global Documentation Limited | Information & communication | 2007 |
| Global Employment Group Ltd | Administrative & support | 2012 |
| Global Group and Co Solutions Ltd | Construction | 2022 |
| Global Imaging Systems Ltd | Manufacturing | 2021 |
| Global Innovation Network Limited | Professional & scientific | 1990 |
| Global Investments (UK) Limited | Professional & scientific | 2000 |
| Global Reach Technology Limited | Administrative & support | 2009 |
| Global Relocation Specialist Services Ltd | Real estate | 2024 |
| Global Room London Ltd | Real estate | 2018 |
| Global Talent Acquisition Ltd | Administrative & support | 2019 |
| Globaltech Recruitment Limited | Administrative & support | 2017 |
| Globet Media Ltd | Other services | 2025 |
| Globetec Solutions Limited | Administrative & support | 2004 |
| Gloss Level Limited | Construction | 2020 |
| Glue Labs Limited | Information & communication | 2023 |
| Glynde House Limited | Real estate | 2003 |
| GM Associates Design Limited | Professional & scientific | 2024 |
| GM Marketing Solutions Limited | Professional & scientific | 2012 |
| GMA Homes Limited | Real estate | 2026 |
| Gmex Group Limited | Financial services | 2012 |
| Gmex Pyctor Limited | Financial services | 2022 |
| Gmjw Limited | Health & social care | 2022 |
| GMX Global Ltd | Administrative & support | 2019 |
| Gnarbone Ltd | Arts & recreation | 2019 |
| Gnathos Limited | Health & social care | 2025 |
| GNF Consulting Ltd | Professional & scientific | 2025 |