| Globe Business Services Limited | Professional & scientific | 2020 |
| Globe Estates (Southern) Limited | Real estate | 1996 |
| Globe Estates (SPV) Ltd | Real estate | 2025 |
| Globe Estates Limited | Real estate | 1996 |
| Globenewswire UK Limited | Information & communication | 2014 |
| Globexinc Limited | Information & communication | 2025 |
| Glorious Vita Health Ltd | Health & social care | 2025 |
| Glory Corner Shop Limited | Wholesale & retail | 2023 |
| Glovers Yard Limited | Financial services | 2002 |
| Glow UP Tanning Limited | Other services | 2022 |
| Glow With Jenna Jones Ltd | Other services | 2023 |
| Glucose Recordings Limited | Information & communication | 2008 |
| GM ARB Training Ltd | Agriculture & fishing | 2012 |
| GM Music Agency Ltd | Extraterritorial | 2012 |
| GMC Sussex Limited | Construction | 2019 |
| GMI Solutions Limited | Professional & scientific | 2011 |
| Gmotagi Consulting Ltd | Information & communication | 2017 |
| GN Media Group Ltd | Wholesale & retail | 2020 |
| GND Land & Homes Ltd | Real estate | 2024 |
| Gnnk Limited | Information & communication | 2015 |
| Gnome Estate Limited | Professional & scientific | 1999 |
| Go Electrical Sussex Limited | Construction | 2012 |
| Go Gold Limited | Hospitality | 2024 |
| Go-Roc Limited | Construction | 2012 |
| Go-Vi Ltd | Information & communication | 2020 |
| Goatchers Ltd | Hospitality | 2022 |
| Godkin Construction Management Ltd | Households | 2018 |
| GOF Stix Ltd | Hospitality | 2023 |
| Gofathom Ltd | Information & communication | 2022 |
| Gogecko Ltd | Administrative & support | 2016 |
| Gold Coast Jewellers Limited | Wholesale & retail | 2002 |
| Gold Diamond Tanning Ltd | Other services | 2024 |
| Gold Removals Limited | Transport & logistics | 2025 |
| Gold Wala Ltd | Information & communication | 2017 |
| Goldbugs (PHI Logo) Ltd | Agriculture & fishing | 2020 |
| Golden Blade Worthing Limited | Other services | 2024 |
| Golden Circle Properties Ltd | Real estate | 2022 |
| Golden House 336 Limited | Hospitality | 2019 |
| Goldengate Associates Limited | Administrative & support | 2002 |
| Goldstone Developments Limited | Real estate | 2019 |
| Goliath Hates Dave Ltd | Professional & scientific | 2023 |
| Gomegaze Ltd | Hospitality | 2019 |
| Good Bear Digital Limited | Information & communication | 2021 |
| Good Food Futures Limited | Professional & scientific | 2016 |
| Good FOX Cubs Ltd | Administrative & support | 2019 |
| Good KID Films Limited | Information & communication | 2021 |
| Good With Wood Carpentry Limited | Manufacturing | 2010 |
| Goodpropertyinvesting Ltd | Construction | 2025 |
| Goodtimes Industries Ltd | Information & communication | 2015 |
| Goodwill Facilities Limited | Professional & scientific | 1966 |
| Goodwill NOW Ltd | Professional & scientific | 2021 |
| Goodwood Beach (Sussex) Limited | Hospitality | 2026 |
| Gordan Reece Limited | Real estate | 2025 |
| Gordon Mews Limited | Households | 2007 |
| Gorf Management Limited | Professional & scientific | 2016 |
| Goring Beach Huts Ltd | Construction | 2010 |
| Goring Building Surveying Limited | Professional & scientific | 2020 |
| Goring Coast Property Ltd | Hospitality | 2026 |
| Goring Consulting Services Limited | Professional & scientific | 2016 |
| Goring Counselling Service Ltd | Health & social care | 2022 |
| Goring Food and Grill Ltd | Hospitality | 2025 |
| Goring GAP Ltd | Financial services | 2022 |
| Goring Glazing Limited | Construction | 2014 |
| Goring Property Services Limited | Financial services | 2021 |
| Gosh Patisserie Ltd | Manufacturing | 2026 |
| GOT This! Ltd | Professional & scientific | 2015 |
| GP Construction & Loft Conversions Limited | Construction | 2013 |
| GP Horses Limited | Agriculture & fishing | 2023 |
| GP Loft and Construction Ltd | Construction | 2022 |
| GPF Media Ltd | Information & communication | 2023 |
| GPU Tools Ltd | Information & communication | 2014 |
| Grace 1 Ltd | Wholesale & retail | 2025 |
| Gradus Authentication Ltd | Wholesale & retail | 2025 |
| Grady Property Ltd | Real estate | 2016 |
| Graham Collins Associates Limited | Professional & scientific | 2014 |
| Graham Knight Limited | Professional & scientific | 2013 |
| Graham Woolcott Consultants Limited | Administrative & support | 2007 |
| Gramercy Advisory Ltd | Professional & scientific | 2023 |
| Granary Investments Ltd | Professional & scientific | 2005 |
| Grand Construction and Sons Ltd | Construction | 2022 |
| Grandads Roast Dinner Limited | Information & communication | 2026 |
| Grandium Manufacturing Ltd | Manufacturing | 2026 |
| Grange Generation Limited | Energy | 2016 |
| Granger Flooring Limited | Wholesale & retail | 2010 |
| Grangewood Care LLP | | 2007 |
| Grangewood Healthcare Limited | Health & social care | 2007 |
| Granite Solutions Group Ltd. | Administrative & support | 2019 |
| Grant Westover Electrical Services Ltd | Construction | 2021 |
| Grantham Consortium Ltd | Financial services | 2017 |
| Grantham Finance Limited | Financial services | 2013 |
| Granulat 2000 (UK) Limited | Wholesale & retail | 1990 |
| Granville Road Residents Management Company Limited | Real estate | 2008 |
| Grape & Graze Limited | Wholesale & retail | 2022 |
| Grapes on Tour Limited | Administrative & support | 2019 |
| Graspafter Limited | Information & communication | 1996 |
| Grasscroft Limited | Extraterritorial | 2003 |
| Grasshopper Hotels (Glasgow) Limited | Hospitality | 2009 |
| Grassroots Design Limited | Administrative & support | 2002 |
| Graymatter Sound Ltd | Information & communication | 2023 |
| Graze Search Ltd | Administrative & support | 2025 |