| Gamistics Ltd | Wholesale & retail | 2025 |
| GAP for Drive Limited | Transport & logistics | 2019 |
| Gapaba Ltd | Education | 2019 |
| Gapc Services Ltd | Health & social care | 2023 |
| Garden View (Combe Martin) Limited | Hospitality | 2022 |
| Gardening Maintenance Ltd | Administrative & support | 2024 |
| Gariga Capital Limited | Information & communication | 2020 |
| Gariga Group Limited | Financial services | 2025 |
| Garons 5ASIDE Centre Ltd | Arts & recreation | 2024 |
| Garus Transport Ltd | Transport & logistics | 2017 |
| Gaster Ventures Limited | Administrative & support | 2024 |
| Gatedtalent Limited | Information & communication | 2017 |
| Gauranityananda Ltd | Health & social care | 2026 |
| GB Southern Limited | Professional & scientific | 2014 |
| GDR Design & Construction Engineering Ltd | Construction | 2016 |
| GE Street Food Ltd | Hospitality | 2020 |
| Geek for a Week Limited | Information & communication | 2016 |
| Geetano Global Limited | Professional & scientific | 2010 |
| GEM Electrical Solutions Limited | Manufacturing | 2012 |
| GEM Hunter Limited | Manufacturing | 2014 |
| Gema AI Ltd | Wholesale & retail | 2023 |
| Gemasecure Ltd | Manufacturing | 2018 |
| Gematech Limited | Information & communication | 2012 |
| Gematrade Limited | Information & communication | 2018 |
| Gemorn Ltd | Information & communication | 2022 |
| Gemstone Property Holdings Ltd | Real estate | 2025 |
| GEN Nugent Counselling Ltd | Health & social care | 2025 |
| GEN2 Automotive Limited | Wholesale & retail | 2025 |
| General Building BTB Ltd | Construction | 2024 |
| Genesis Autoworld Limited | Wholesale & retail | 2025 |
| Genesis Film and Video Limited | Information & communication | 2020 |
| Genesis Market Ltd | Wholesale & retail | 2026 |
| Gennadyco Ltd | Arts & recreation | 2011 |
| Genus Breeding Limited | Professional & scientific | 1974 |
| Genus Investments Limited | Professional & scientific | 1986 |
| Genus PLC | Agriculture & fishing | 1994 |
| Genus Quest Trustees Limited | Other services | 1999 |
| Genus Trustees Limited | Other services | 1995 |
| George William Homes Limited | Extraterritorial | 2017 |
| Georgia OIL Art Ltd | Arts & recreation | 2026 |
| Georgian Complete Finishings Ltd | Construction | 2005 |
| Georgios Retail Ltd | Wholesale & retail | 2019 |
| German Shepherd Film Ltd | Information & communication | 2021 |
| Geronimo Limited | Health & social care | 2025 |
| GET Attention Marketing Limited | Administrative & support | 2018 |
| GET Social With Lily Ltd | Professional & scientific | 2024 |
| Getting People Growing Limited | Wholesale & retail | 2020 |
| Ggsh Ltd | Professional & scientific | 2017 |
| GH Home Cleaning Services (Farnborough) Ltd | Administrative & support | 2023 |
| Ghanavats Ltd | Information & communication | 2019 |
| Ghania Limited | Health & social care | 2024 |
| GHB Service & Repairs Ltd | Wholesale & retail | 2021 |
| Ghorbari Limited | Real estate | 2022 |
| Ghrwhydelt Ltd | Manufacturing | 2026 |
| Gianav Limited | Health & social care | 2023 |
| Gibbs & Ware Limited | Real estate | 2024 |
| Gibson Investment Properties Limited | Construction | 2015 |
| Giddioso Limited | Administrative & support | 2017 |
| Giftes UK Ltd | Wholesale & retail | 2025 |
| Gigi Driving Ltd | Transport & logistics | 2026 |
| Gilbert and Grange Limited | Real estate | 2016 |
| Gilden Estates Limited | Real estate | 2003 |
| Gilgal Consulting Limited | Professional & scientific | 2019 |
| Gill and Macmillan (UK) Limited | Extraterritorial | 2010 |
| GILL099 Limited | Transport & logistics | 2024 |
| Gillard Ltd | Professional & scientific | 2024 |
| GIN & Chocolate Ltd | Wholesale & retail | 2020 |
| Ginger Cat ADR Limited | Professional & scientific | 2013 |
| Girls in Data | Education | 2021 |
| Gitardi Investments Ltd | Real estate | 2025 |
| GJL Holdings Limited | Financial services | 2025 |
| GK Garments Ltd | Wholesale & retail | 2026 |
| Gkma Consulting Ltd | Professional & scientific | 2025 |
| Gkstreet Ltd | Professional & scientific | 2012 |
| GL Brightspark Recruitment Ltd | Administrative & support | 2025 |
| GL Fisher Consultancy Ltd | Professional & scientific | 2023 |
| Glade Close 1956 Limited | Extraterritorial | 2015 |
| Gladebridge Limited | Professional & scientific | 2018 |
| Gladiator Performance Ltd | Arts & recreation | 2025 |
| Gladiator Recruitment Limited | Administrative & support | 2022 |
| Glam by KEN Ltd | Other services | 2025 |
| Glaze-Fix Windows and Doors Limited | Manufacturing | 2013 |
| Glazing Protection Systems Limited | Construction | 2006 |
| Glebe Accountancy Ltd | Professional & scientific | 2022 |
| Glenburnie Property Developers Limited | Construction | 2019 |
| Glendair Dental Limited | Health & social care | 2006 |
| Glendair Facial Aesthetics Limited | Health & social care | 2014 |
| Glendair Finance Holdings Limited | Financial services | 2014 |
| Glenmore Associates Limited | Professional & scientific | 2018 |
| Glisten Cosmetics Ltd | Wholesale & retail | 2017 |
| Glisten Group Ltd | Financial services | 2026 |
| Glisten Mgmt Limited | Professional & scientific | 2022 |
| Glitterball Clothes Ltd | Wholesale & retail | 2021 |
| Global AV Limited | Wholesale & retail | 2016 |
| Global Broadcast Limited | Information & communication | 2014 |
| Global Garden Supplies Ltd | Wholesale & retail | 2023 |
| Global Horticulture Ltd | Wholesale & retail | 2019 |
| Global Power Grid Solutions Limited | Professional & scientific | 2022 |
| Global Private Equity Solutions Ltd | Information & communication | 2023 |
| Globalmart Private Limited | Wholesale & retail | 2024 |