| G2V Transformation & Training Ltd | Education | 2026 |
| Gable Joinery Limited | Manufacturing | 2014 |
| Gabriel IT Ltd | Information & communication | 2016 |
| Gabriel Smart Solutions Ltd | Administrative & support | 2026 |
| Galactico Coaching Limited | Education | 2026 |
| Galaxy Travel & Cars Limited | Transport & logistics | 2019 |
| Galkot Property Investment Ltd | Real estate | 2020 |
| Galos Plymouth Ltd | Hospitality | 2019 |
| Gamble Investments Ltd | Information & communication | 2011 |
| Gander Web Ltd | Information & communication | 2023 |
| Garage 7 (Derbyshire) Limited | Wholesale & retail | 2025 |
| Garden & Garage Inc Ltd | Wholesale & retail | 2025 |
| Garden Beauty Maintenance Services Limited | Administrative & support | 2009 |
| Garden Buildings Retail Ltd | Construction | 2009 |
| Garesh Holdings Limited | Transport & logistics | 2012 |
| Gary Batley Fencing Contractors Ltd | Construction | 2016 |
| Gary Brunskill Ltd | Professional & scientific | 2023 |
| Gary Sinclair Entertainments Limited | Arts & recreation | 1998 |
| Gary Sinclair Ltd | Real estate | 2015 |
| GAS Electrical Services Ltd | Manufacturing | 2015 |
| GAS Property Ltd | Real estate | 2018 |
| Gast Digital Ltd | Information & communication | 2024 |
| Gate Market Ltd | Wholesale & retail | 2025 |
| Gateford Place Management Ltd | Households | 2025 |
| Gateway Prime Investment Holdings Ltd | Professional & scientific | 2018 |
| Gauntlet Stubbs Ltd | Financial services | 2014 |
| Gavtec Ltd | Construction | 2008 |
| GB Bespoke Joinery Ltd | Construction | 2014 |
| GB Fencing Contractors Ltd | Construction | 2024 |
| GB Yachts and Powerboating Limited | Education | 2005 |
| GB7 Consultancy Limited | Information & communication | 2017 |
| Gbgc (UK) Limited | Professional & scientific | 2022 |
| GBL Automation Ltd | Professional & scientific | 2016 |
| GBL Housing Ltd | Real estate | 2020 |
| GBL Projects (Three) Ltd | Real estate | 2013 |
| GC Clowne Limited | Hospitality | 2019 |
| GCL Products Limited | Wholesale & retail | 2002 |
| GD Computer Solutions Ltd | Information & communication | 2022 |
| Gear Electrical Limited | Manufacturing | 2025 |
| Geeks Headquarters Ltd | Arts & recreation | 2015 |
| GEM Aviation Ltd | Manufacturing | 2022 |
| Gembro Ltd | Wholesale & retail | 2010 |
| Gemma Books Limited | Wholesale & retail | 2004 |
| Gemma Scott Limited | Other services | 2010 |
| Gemva Holdings Group Limited | Hospitality | 2016 |
| Generation Tomorrow Ltd | Education | 2025 |
| Generations Care Agency Limited | Health & social care | 2007 |
| Genex Business Consulting Limited | Administrative & support | 2019 |
| Gent Properties (Midlands) Ltd | Real estate | 2023 |
| GEO Housing Ltd | Real estate | 2026 |
| Geolex Developments Ltd | Construction | 2025 |
| George & Dragon Mosborough Limited | Hospitality | 2023 |
| George Sandiford Limited | Wholesale & retail | 2024 |
| George Tutill,Limited | Manufacturing | 1941 |
| Georgia White Mentor Limited | Education | 2024 |
| Geotop Electrical Ltd | Construction | 2016 |
| German Motor Store Limited | Wholesale & retail | 2020 |
| GES Power Limited | Manufacturing | 2023 |
| GET ME Packaging Ltd | Extraterritorial | 2017 |
| Getpod UK Limited | Construction | 2025 |
| GFB Espresso LAB Limited | Manufacturing | 2025 |
| GG Hotels Ltd | Hospitality | 2025 |
| Gg&G Group Limited | Hospitality | 2025 |
| Gg-Inspire Properties Ltd. | Real estate | 2024 |
| GGG Plant Limited | Administrative & support | 2024 |
| GH and Q Services Ltd | Real estate | 2023 |
| GH Homes (Derbyshire) Ltd | Construction | 2020 |
| GHD Properties Limited | Real estate | 2024 |
| GHE Asset Management Limited | Real estate | 2022 |
| GI Group Holdings Recruitment Limited | Administrative & support | 2011 |
| GI Group Recruitment Ltd | Administrative & support | 1985 |
| GI Group Staffing Solutions Limited | Administrative & support | 1992 |
| GI Recruitment Limited | Administrative & support | 1993 |
| Giananyetta Limited | Wholesale & retail | 2012 |
| Giant Civils Limited | Construction | 2020 |
| Gifted Hands Painting Ltd | Construction | 2024 |
| Gifts on the High Street Ltd | Wholesale & retail | 2025 |
| Gilbert Estates Limited | Construction | 2014 |
| Gillyeald Catering Ltd | Hospitality | 2023 |
| Ginger Automotive Ltd | Wholesale & retail | 2015 |
| Giofu Procurement Limited | Other services | 2017 |
| Giraffe Nursery Store Ltd | Wholesale & retail | 2022 |
| Giro Estates Ltd | Real estate | 2025 |
| Giro Properties Ltd | Hospitality | 2026 |
| Giver of Light Ltd | Wholesale & retail | 2014 |
| GJ Traffic Services Limited | Construction | 2023 |
| GJR Media Limited | Professional & scientific | 2026 |
| GK Choices Ltd | Professional & scientific | 2023 |
| GKA Electrical Ltd | Construction | 2019 |
| Gklm Property Ltd | Real estate | 2023 |
| Gladedale (Home Counties) Limited | Construction | 1988 |
| Gladedale (South East) Limited | Construction | 1996 |
| Gladiator Self Storage Langwith Ltd | Administrative & support | 2024 |
| Gladiator Self Storage Mansfield Ltd | Administrative & support | 2025 |
| Gladiator Self Storage Shirebrook Limited | Other services | 2025 |
| Gladiator Storage Group Limited | Administrative & support | 2021 |
| Glapwell (DOE LEA) Miners Welfare Social Club Limited | Hospitality | 1992 |
| Glapwell (Peak) Developments Limited | Construction | 2025 |
| Glapwell Contracting Services Holdings Limited | Professional & scientific | 2012 |
| Glapwell Hall Gardens Limited | Wholesale & retail | 2025 |