| Glorious Logistics Limited | Transport & logistics | 2019 |
| Gloucester Gardens Residents Association Limited | Households | 1995 |
| Glow & Thrive Ltd | Wholesale & retail | 2025 |
| Glow Studio MP Limited | Other services | 2026 |
| Glprime Interiors Ltd | Construction | 2026 |
| GLR Midland Ltd | Real estate | 2021 |
| Gmaw Consultants Limited | Administrative & support | 2022 |
| GMG Painting & Decorating Ltd | Construction | 2016 |
| GMS Technologies Limited | Information & communication | 2016 |
| GMW Haywards Heath Ltd | Wholesale & retail | 2015 |
| GMW Service Ltd | Wholesale & retail | 2015 |
| GNS Business Services Ltd | Administrative & support | 2019 |
| GNT Construction (South East) Ltd | Construction | 2014 |
| GNT Properties (South East) Ltd | Real estate | 2021 |
| Go Ahead Homes Limited | Health & social care | 2018 |
| Go Clear Ltd | Information & communication | 2025 |
| Go Gadget Ltd | Wholesale & retail | 2018 |
| Go IO Ltd | Information & communication | 2025 |
| Go LAB Grown Limited | Manufacturing | 2021 |
| Go Print Ltd | Manufacturing | 2017 |
| Goal Finance Ltd | Financial services | 2021 |
| Godstone Properties Ltd | Real estate | 2024 |
| Goel Healthcare Limited | Administrative & support | 2026 |
| Goenka Consulting Ltd | Information & communication | 2011 |
| Gold Gunns Ltd | Financial services | 2022 |
| Golddy Electriix Limited | Energy | 2026 |
| Golden Fields Organic Ltd | Manufacturing | 2025 |
| Golden Tulips Ltd | Information & communication | 2018 |
| Goldhawke Digital Limited | Professional & scientific | 2012 |
| Goldhill Construction Limited | Construction | 2009 |
| Goldhurst Holdings Ltd | Real estate | 2026 |
| Goldlane Flooring Ltd | Construction | 2025 |
| Goldmanx Development Ltd | Construction | 2023 |
| Goldsmith (London) Ltd | Construction | 2010 |
| Golf Trade Surrey Ltd | Wholesale & retail | 2024 |
| Good and Everlasting Rest Limited | Manufacturing | 2025 |
| Good Build Company (London) Limited | Construction | 2010 |
| Good Good Health Ltd | Wholesale & retail | 2026 |
| Goodmanager.Com Ltd | Administrative & support | 2017 |
| Goodwood Sportscars Ltd | Wholesale & retail | 2013 |
| Gopaldas Trading Ltd | Wholesale & retail | 2025 |
| GOSHEV1973 Limited | Transport & logistics | 2019 |
| Gourmet Oriental Ltd | Hospitality | 2026 |
| Gowen & Stevens LLP | | 2006 |
| Gowrimart Limited | Wholesale & retail | 2024 |
| Gowry Properties Ltd | Real estate | 2023 |
| GP Assisted Healthcare Ltd | Public administration | 2025 |
| GP Practice UK Limited | Health & social care | 2018 |
| Gpcs Building & Maintenance Ltd | Construction | 2020 |
| GPG Link Ltd | Construction | 2012 |
| GPS 2 Limited | Construction | 2021 |
| Grace Management Consultants Ltd | Professional & scientific | 2018 |
| Grad Ventura Ltd | Professional & scientific | 2022 |
| Graham's Property Management Ltd | Real estate | 2022 |
| Graingers Home Improvements Ltd | Administrative & support | 2015 |
| Gram Carbon Cycles Limited | Wholesale & retail | 2019 |
| Grand Designs Paving (Surrey) Ltd | Construction | 2023 |
| Grand Services 88 Ltd | Administrative & support | 2022 |
| Grand Smile Design Limited | Health & social care | 2009 |
| Grange Lodge Wimbledon Ltd | Administrative & support | 1960 |
| Grange Park Threals Management Company Ltd | Households | 2024 |
| Grange Surveyors Limited | Construction | 2024 |
| Grapevine Social Limited | Information & communication | 2016 |
| Grasmere Care Home Ltd | Health & social care | 2026 |
| Grateful Heart Limited | Real estate | 2020 |
| Gravitas T Limited | Education | 2019 |
| Graviti Education Technologies Limited | Education | 2021 |
| Gravity Traders Limited | Wholesale & retail | 2020 |
| Gravityx Limited | Wholesale & retail | 2019 |
| Gray Matter Ltd | Health & social care | 2025 |
| Graystowncrows Ltd | Professional & scientific | 2019 |
| Grayswood Commercial Ltd | Real estate | 2024 |
| GRC Simplified Limited | Information & communication | 2019 |
| Great Dane Heating Ltd | Construction | 2025 |
| Great Oaks Property Ltd | Construction | 2026 |
| Green Earth Gardens Ltd | Administrative & support | 2023 |
| Green Fast Pack Limited | Manufacturing | 2025 |
| Green Gecko Television Ltd. | Information & communication | 2001 |
| Green Letting Management Limited | Hospitality | 2018 |
| Green Nest Ventures Ltd | Wholesale & retail | 2025 |
| Green Orchid Limited | Wholesale & retail | 2014 |
| Green Roots Trade Ltd | Wholesale & retail | 2025 |
| Green Sprints Ltd | Information & communication | 2016 |
| Greenbox Renewables Ltd | Construction | 2025 |
| Greenford Road Sutton Limited | Real estate | 2021 |
| Greenheat(Surrey) Ltd | Construction | 2026 |
| Greenhome Property Ltd | Real estate | 2020 |
| Greensad Ltd | Wholesale & retail | 2023 |
| Greensea Developments Limited | Professional & scientific | 1984 |
| Greensea Properties Limited | Real estate | 1963 |
| Greenshaw Learning Services Ltd | Education | 2014 |
| Greenshaw Learning Trust | Education | 2011 |
| Greensleeve Holdings Ltd | Wholesale & retail | 2021 |
| Greentech Technology Ltd | Real estate | 2013 |
| Greenwoods Trading Ltd | Professional & scientific | 2012 |
| Greg Corbett Associates Limited | Professional & scientific | 1999 |
| Grey Falcon Capital Ltd | Financial services | 2025 |
| GRH Landscape & Fencing Ltd | Administrative & support | 2024 |
| Grice Developments Ltd | Construction | 2024 |
| Grids Basketball Limited | Arts & recreation | 2013 |