| Georgetown (Whitby) Limited | Real estate | 2013 |
| Georgetown Carr Limited | Real estate | 2008 |
| Georgetown Developments Limited | Real estate | 1978 |
| Georgetown Forest Limited | Real estate | 2001 |
| Georgetown Victoria Limited | Real estate | 1999 |
| Georgian Mews Management Company Limited | Professional & scientific | 2004 |
| Georgiefour Ltd | Construction | 2018 |
| Gerrard Media and Marketing Ltd | Professional & scientific | 2026 |
| Getthetyres Ltd | Wholesale & retail | 2017 |
| GF (Thornbury) Limited | Real estate | 2021 |
| GF Bilbrough Ltd | Financial services | 2025 |
| Gfireprotection Ltd | Manufacturing | 2023 |
| GG Data Solutions Limited | Information & communication | 2016 |
| GG Positive Solutions Ltd | Education | 2023 |
| Gglegion Ltd | Wholesale & retail | 2021 |
| GH Cars Ltd | Wholesale & retail | 2019 |
| GH Ventilation Services Ltd | Construction | 2023 |
| Ghenu Trans Ltd | Transport & logistics | 2023 |
| Giant Radio Ltd | Information & communication | 2009 |
| Gibbs & Co Salon Ltd | Other services | 2026 |
| Gidi Innovative Ltd | Wholesale & retail | 2026 |
| Gifting Smiles Ltd | Manufacturing | 2024 |
| GIG Estates Limited | Real estate | 2018 |
| GIG Events Limited | Professional & scientific | 2009 |
| GIG Marketing Limited | Professional & scientific | 2009 |
| GIG Retail Limited | Professional & scientific | 2011 |
| Giga Power (UK) Ltd | Administrative & support | 2022 |
| Gill Allen Developments Ltd | Construction | 2020 |
| Gillian Peach Ltd | Administrative & support | 2011 |
| Gillibrand Consulting Limited | Professional & scientific | 2002 |
| Gillott Building Contractors Limited | Construction | 2002 |
| Gillott Engineering Limited | Manufacturing | 2013 |
| Gillott Properties (Yorks) Limited | Real estate | 2021 |
| Gillott Property Services Ltd | Other services | 2017 |
| Gilmour Fire and Security Limited | Administrative & support | 2026 |
| Gilroyd Convenience Store Limited | Wholesale & retail | 2026 |
| Gimba Estate Limited | Real estate | 2020 |
| Gimba Solutions Ltd | Health & social care | 2015 |
| GIN Fever Limited | Hospitality | 2017 |
| GIN Plumbing Ltd | Construction | 2025 |
| Ginger FOX Studio Ltd | Professional & scientific | 2020 |
| Gingers of Nottingham Ltd | Hospitality | 2017 |
| Ginos Castle Close Ltd | Hospitality | 2025 |
| Givva Ltd | Wholesale & retail | 2021 |
| GJ Electrical Ltd | Construction | 2022 |
| Gj.Kodrish Ltd | Wholesale & retail | 2024 |
| GJH Maintenance Limited | Administrative & support | 2026 |
| GK Crane Services Limited | Administrative & support | 2009 |
| GK4 Limited | Administrative & support | 2014 |
| Glass Minds Ltd | Health & social care | 2025 |
| Glass Onion Vintage Limited | Manufacturing | 2008 |
| Glass Recycling (UK) Collections Limited | Water & waste | 2016 |
| Glass Recycling (UK) Limited | Water & waste | 1974 |
| Glass Recycling (UK) Processing Limited | Water & waste | 2016 |
| Glass Recycling (UK) Trading Limited | Water & waste | 2016 |
| Glass Resort Limited | Manufacturing | 2012 |
| Glass Site Services Limited | Transport & logistics | 2010 |
| Glasshouse IRE Ltd | Professional & scientific | 2024 |
| Glasswork Analytics Ltd | Information & communication | 2026 |
| Gleam Supreme Ltd | Administrative & support | 2024 |
| Gleeson Surveying Ltd | Professional & scientific | 2014 |
| Glenroy Developments Limited | Real estate | 2003 |
| GLF Training Ltd | Education | 2021 |
| GLIGAN75 Ltd | Transport & logistics | 2017 |
| GLM Financial Holdings Limited | Professional & scientific | 2024 |
| Global CC Ltd | Professional & scientific | 2007 |
| Global ECM Limited | Manufacturing | 2016 |
| Global Escape Rooms Ltd | Arts & recreation | 2019 |
| Global Expedition Medics Limited | Health & social care | 2023 |
| Global Export Packing Services Limited | Other services | 2019 |
| Global Indoor Karting Limited | Arts & recreation | 2019 |
| Global MI Limited | Financial services | 2011 |
| Global Rentals Solutions Ltd | Real estate | 2025 |
| Global Storage Solutions Ltd | Construction | 2023 |
| Globalhour Limited | Real estate | 1990 |
| Globe Holidays Limited | Transport & logistics | 1993 |
| Globocol Ltd | Information & communication | 2010 |
| Globus a Ltd | Wholesale & retail | 2017 |
| Glomark Invest Ltd | Real estate | 2025 |
| Glossy Nails Cudworth Ltd | Other services | 2024 |
| Glow House Tanning Ltd | Other services | 2025 |
| Glow Support Services Ltd | Health & social care | 2023 |
| Glowing Angels Care Limited | Health & social care | 2023 |
| Glsl Consultants Limited | Professional & scientific | 2020 |
| Glyn Dyer Design Ltd | Professional & scientific | 2014 |
| Glyn Rhodes Promotions/Sheffield Boxing Centre Limited | Arts & recreation | 2005 |
| GMB Leisure (Mansfield) Limited | Arts & recreation | 2025 |
| GMB Mechanical Limited | Other services | 2019 |
| GMC Electrical Ltd | Construction | 2025 |
| GMC Roofing Ltd | Construction | 2016 |
| GMM Civils Limited | Manufacturing | 2020 |
| GMM Grab and Plant Hire Limited | Administrative & support | 2015 |
| GMM Group Limited | Extraterritorial | 2020 |
| GMM Utilities Limited | Construction | 2015 |
| GMS Media Group Ltd | Information & communication | 2026 |
| Go Amplify Ltd | Professional & scientific | 2016 |
| Go Enterprises Ltd | Hospitality | 2026 |
| Go Safe Events Limited | Administrative & support | 2011 |
| Go Team Limited | Financial services | 2010 |
| Go Web Design & Development Ltd | Information & communication | 2016 |