| GMZ Digital Ltd | Wholesale & retail | 2023 |
| GNS Holdings (South) Limited | Financial services | 2017 |
| Go Vicinity Creative Ltd | Professional & scientific | 2010 |
| God's Homes Limited | Real estate | 2025 |
| Godfrey L H B Limited | Other services | 1995 |
| Godwin Private Ltd | Wholesale & retail | 2024 |
| Gogirl Signs Limited | Arts & recreation | 2006 |
| Gold 12 Property Plus LP | | 2006 |
| Gold Medical Limited | Administrative & support | 2025 |
| Goldcup EP UK Limited | Construction | 2026 |
| Golden Kitchen (ST. Dunstans) Ltd | Hospitality | 2021 |
| Golden Primrose Ltd | Financial services | 2021 |
| Golders News & Sports Agency Ltd | Administrative & support | 2017 |
| Goldin Medical Limited | Administrative & support | 2016 |
| Goldsack Blinds & Contracts Limited | Manufacturing | 2003 |
| Goliath Management Ltd | Households | 2001 |
| Good Bloom Ltd | Administrative & support | 2024 |
| Good Mood Barbers Limited | Other services | 2026 |
| Goodheads Group Ltd | Information & communication | 2026 |
| Goodplumbing Care Plan Ltd | Construction | 2022 |
| Goodplumbing.Co.Uk Limited | Construction | 2014 |
| Gooey Digital Limited | Information & communication | 2015 |
| Goose Systems Ltd | Information & communication | 2025 |
| GOT the Shot Limited | Professional & scientific | 2022 |
| Gothic Games Ltd | Other services | 2025 |
| Gourmet TUK Ltd | Wholesale & retail | 2020 |
| Gower Farm Services Limited | Agriculture & fishing | 2012 |
| Gower Ventures Limited | Professional & scientific | 2012 |
| GPG Interiors Ltd | Construction | 2022 |
| Grackle Limited | Information & communication | 2019 |
| Graham Brown Ltd | Professional & scientific | 2015 |
| Graingergroup Ltd | Real estate | 2025 |
| Grand Horizons Travel Ltd | Administrative & support | 2025 |
| Grange Coker Capital Limited | Financial services | 2022 |
| Grapefruit Property Limited | Construction | 2016 |
| Grapevine Marketplace Ltd | Wholesale & retail | 2025 |
| Gravitat Ltd | Real estate | 2009 |
| Graystone Management Ltd | Professional & scientific | 2026 |
| Great Bossingham Farm Limited | Real estate | 2022 |
| Great Create UK Limited | Arts & recreation | 2024 |
| Great Prospects Care Limited | Health & social care | 2014 |
| Great Stour Place Management Company Limited | Households | 2000 |
| Greater London Bailiff Consultancy Limited | Administrative & support | 2004 |
| Greek Street Food Kent Ltd | Wholesale & retail | 2019 |
| Green Alternative Ltd | Real estate | 2023 |
| Green Bandito Limited | Hospitality | 2025 |
| Green Construction Limited | Construction | 2001 |
| Green Diagnostics Limited | Health & social care | 2023 |
| Green Hart Construction Limited | Construction | 2021 |
| Green Hub Environment Ltd | Extraterritorial | 2023 |
| Green International Guitar Shows Ltd | Administrative & support | 2026 |
| Green Miles Tech Limited | Construction | 2017 |
| Green Site Operations Ltd | Construction | 2026 |
| Green Sixteen Limited | Professional & scientific | 2020 |
| Green Star Asset Management Holdings LLP | | 2021 |
| Green Star Asset Management Limited | Professional & scientific | 2019 |
| Green Valleys Consulting Ltd | Professional & scientific | 2024 |
| Greenbanks Care Trust | Health & social care | 2015 |
| Greenbanks House Limited | Health & social care | 1988 |
| Greenbelt Homes Ltd | Real estate | 2021 |
| Greenfields Country Store Limited | Wholesale & retail | 2021 |
| Greengage Environmental Holdings Limited | Professional & scientific | 2025 |
| Greengage Environmental Limited | Administrative & support | 2012 |
| Greenleaf BIO Ltd | Agriculture & fishing | 2024 |
| Greenstove Solutions Limited | Construction | 2019 |
| Grenham Bay Care Limited | Health & social care | 2002 |
| Greosn Holdings Limited | Financial services | 2024 |
| Greosn Ltd | Financial services | 2014 |
| Greves Estates Limited | Construction | 2025 |
| Greytail Advisory Ltd | Professional & scientific | 2025 |
| Greythorne Risk Limited | Professional & scientific | 2019 |
| Grid Renewables Ltd | Extraterritorial | 2023 |
| Gridminds Consulting Ltd | Professional & scientific | 2026 |
| Gridpay Ltd | Financial services | 2018 |
| Grievous Bodily Media Limited | Information & communication | 2009 |
| Griffinlore Ltd | Professional & scientific | 2025 |
| Grill House Canterbury Ltd | Hospitality | 2025 |
| Grillability Ltd | Hospitality | 2024 |
| Grimsey GEE Partnership Limited | Professional & scientific | 1988 |
| Grip Coaching Limited | Other services | 2022 |
| Groombridge Farms Ltd | Agriculture & fishing | 2021 |
| Groombridge Limited | Agriculture & fishing | 2012 |
| Ground and Air Limited | Other services | 2018 |
| Ground Projects Limited | Construction | 2016 |
| Groundrisk Advisory Limited | Professional & scientific | 2026 |
| Groundwork and Building Solutions Ltd | Construction | 2014 |
| Group Everest Limited | Wholesale & retail | 2017 |
| Group Performance Limited | Professional & scientific | 2018 |
| Grove Consulting Services Limited | Financial services | 2024 |
| Grow More With Paddi Group Limited | Wholesale & retail | 2025 |
| GRR C Freehold Ltd | Households | 2026 |
| Grub Fresh Food Ltd. | Hospitality | 2010 |
| Grundy Engineering Inspections Ltd | Professional & scientific | 2018 |
| GS Property Holdings (UK) Limited | Real estate | 2019 |
| GT Leighs Ltd | Wholesale & retail | 2026 |
| Gtaxi Limited | Wholesale & retail | 2022 |
| Gtxgaming Limited | Information & communication | 2020 |
| GUARDING24SEVEN Services Ltd | Administrative & support | 2022 |
| Guilton Forge Garage (ASH) Limited | Wholesale & retail | 2011 |
| Guilton Forge Properties Limited | Financial services | 2011 |