| Great Clump Limited | Arts & recreation | 2022 |
| Great Garden Escapes Ltd | Administrative & support | 2019 |
| Great Houses and Estates Limited | Information & communication | 2024 |
| Greatrix Limited | Construction | 2016 |
| Green Brand Energy Limited | Administrative & support | 2024 |
| Green Buoy Limited | Professional & scientific | 2023 |
| Green Collar Tasks Ltd | Administrative & support | 2016 |
| Green Energy Partners (Holdings) Limited | Professional & scientific | 2007 |
| Green Ground Limited | Extraterritorial | 2015 |
| Green Horizon Solutions Limited | Professional & scientific | 2024 |
| Green Park Close Limited | Households | 2005 |
| Green Park Farming Limited | Agriculture & fishing | 2022 |
| Greenacres Drive Management Company Limited | Households | 2000 |
| Greenacres, Chidham (Management Company) Ltd | Households | 2020 |
| Greener Landscapes Ltd | Construction | 2006 |
| Greener Landscapes Supplies Ltd | Construction | 2022 |
| Greenfield Chemicals Ltd | Extraterritorial | 2023 |
| GREENFROG5 Ltd | Financial services | 2024 |
| Greenhaus Farms Limited | Manufacturing | 2021 |
| Greenhaven Homes Limited | Real estate | 2011 |
| Greenhaven Homes Phase 1 Limited | Real estate | 2012 |
| Greenhaven Homes Phase 3 Limited | Real estate | 2014 |
| Greenhill Cars Plus Ltd | Health & social care | 2017 |
| Greenhill Consulting Services Limited | Other services | 2016 |
| Greenhill Four Ltd | Real estate | 2025 |
| Greenhill Home Maintenance Limited | Construction | 2011 |
| Greenhill Marquees Ltd | Extraterritorial | 2021 |
| Greenhill One Limited | Real estate | 2018 |
| Greenhill Property Development Limited | Construction | 2015 |
| Greenhill Three Limited | Real estate | 2022 |
| Greenhill Two Limited | Real estate | 2020 |
| Greenkeeper Pro Limited | Administrative & support | 2014 |
| Greens Bar and Kitchen Ltd | Hospitality | 2024 |
| Greenstandard Limited | Administrative & support | 2002 |
| Greenstone Umbrellas Co Limited | Wholesale & retail | 2016 |
| Gregory & Co Limited | Professional & scientific | 2002 |
| Gretel Keyte Copy Ltd | Administrative & support | 2025 |
| Greybox Geospatial Ltd | Professional & scientific | 2025 |
| Greymouse International Limited | Professional & scientific | 1993 |
| Greypoint Advisory Services Ltd | Professional & scientific | 2026 |
| Griffin Precast Products Limited | Construction | 2023 |
| Grigorian.Co.Uk Limited | Information & communication | 2013 |
| Grimlock Holdings Ltd | Financial services | 2024 |
| Grin Reaper Limited | Manufacturing | 2004 |
| GROCERY4YOU Ltd | Wholesale & retail | 2024 |
| Ground Upwards Ltd | Information & communication | 2019 |
| Groundshield Groundworks & Paving Ltd | Construction | 2020 |
| Grove Place Winchester (NO.1) Management Company Limited | Administrative & support | 2006 |
| Grow by Digitalization Ltd | Information & communication | 2023 |
| Growth Strategies Limited | Construction | 2009 |
| Growth= MC2 Limited | Professional & scientific | 2017 |
| Gsddotone Limited | Professional & scientific | 2018 |
| GSL London Limited | Manufacturing | 2013 |
| Gsuk Management Limited | Real estate | 2025 |
| GSW Consultants Limited | Professional & scientific | 2016 |
| Guildford Letting Limited | Real estate | 2025 |
| Guillaume Vappereau Limited | Other services | 2011 |
| Guion & Brown Limited | Professional & scientific | 1989 |
| Gullwing Estates Limited | Real estate | 2014 |
| Gumhealth 2 Ltd | Health & social care | 2026 |
| Guntrader Media Ltd | Information & communication | 2021 |
| Gurkha Caterers 22 Limited | Hospitality | 2022 |
| Gurkha Cleaning Ltd | Administrative & support | 2020 |
| Gurkha Homes Ltd | Hospitality | 2012 |
| Gurkha Inn 17 Limited | Hospitality | 2019 |
| Gurkha Kitchen Ltd | Hospitality | 2005 |
| Gurkha Logistics Ltd | Transport & logistics | 2023 |
| Gurkha Movers Ltd | Water & waste | 2023 |
| Gurkha Museum Enterprises Limited | Wholesale & retail | 2021 |
| Gutermann Limited | Wholesale & retail | 2003 |
| GUY Lynch Surveyors Limited | Professional & scientific | 2020 |
| GUY Redhead & Co Ltd | Information & communication | 2023 |
| GV Investments Ltd | Administrative & support | 2015 |
| GW Equine Ltd | Education | 2015 |
| Gwasanaethau Broga Cyfyngedig | Professional & scientific | 1989 |
| Gwef Strategies Ltd | Professional & scientific | 2015 |
| H G Bruce and Partners,Limited | Construction | 1950 |
| H J Gauntlett & Sons Limited | Agriculture & fishing | 2011 |
| H Keeling Limited | Manufacturing | 2016 |
| H&B Style Limited | Wholesale & retail | 2015 |
| H. Bendall & Co. (Properties) Limited | Real estate | 1957 |
| H.F.Holdings Limited | Administrative & support | 1955 |
| H.J.C.W Limited | Agriculture & fishing | 2012 |
| H.P.G. Maintenance Limited | Administrative & support | 2012 |
| H2U Media Ltd | Professional & scientific | 2021 |
| H4ASSOCIATESUK Ltd | Extraterritorial | 2017 |
| HA & HP Limited | Real estate | 2022 |
| Hacomms Limited | Professional & scientific | 2025 |
| Hadingham Kirk Ltd | Construction | 2014 |
| Hadrian Engineers Ltd | Professional & scientific | 2012 |
| Hairy Poppins Hampshire Ltd | Professional & scientific | 2020 |
| Hake Consulting Limited | Information & communication | 2019 |
| Halcyon ASH Limited | Construction | 2020 |
| Hallen 66 Limited | Financial services | 2022 |
| Hallgarth Street Limited | Financial services | 2025 |
| Halo Global Asset Management Ltd | Financial services | 2016 |
| HAM Green Partnership Limited | Real estate | 2012 |
| Hamaagen Consulting Limited | Professional & scientific | 2018 |
| Hambledon Road Management Limited | Extraterritorial | 2006 |
| Hamblewood Management Company Limited | Households | 2022 |