| Gen-Z Commerce Limited | Wholesale & retail | 2022 |
| General Practice Services London Limited | Health & social care | 2010 |
| Genesis Builders Ltd | Construction | 2019 |
| Genga & Co Solicitors Limited | Professional & scientific | 2004 |
| Genius Mobile Zone Ltd | Other services | 2017 |
| GENIUS200 Limited | Public administration | 2022 |
| Genlink C.I.C. | Education | 2025 |
| Genprime Ltd | Wholesale & retail | 2026 |
| Genuine Cakes Retail Limited | Wholesale & retail | 2014 |
| Genz Media Group Ltd | Wholesale & retail | 2025 |
| Geoconstrunction Ltd | Construction | 2024 |
| George Design Ltd | Construction | 2015 |
| George Evennett Limited | Professional & scientific | 2015 |
| George Wright Hospitality Ltd | Hospitality | 2025 |
| GEORGE&COSTEL23 Limited | Construction | 2019 |
| George&Fcrb Limited | Construction | 2019 |
| Gerrards Cross Estate Agent Ltd | Real estate | 2013 |
| Gerties Gang Limited | Administrative & support | 2011 |
| Gestetner (Eastern) Limited | Professional & scientific | 1929 |
| Geten Services UK Limited | Other services | 2025 |
| Gets Alliance Ltd | Information & communication | 2019 |
| Getschwifty Ltd | Information & communication | 2018 |
| Geuno Ltd | Health & social care | 2025 |
| Gfam Service Ltd | Transport & logistics | 2023 |
| GFB Unique Ltd | Hospitality | 2023 |
| GG Karol Construct Ltd | Construction | 2023 |
| Gg&Ns Services Ltd | Transport & logistics | 2021 |
| Ggcc Property Ltd | Real estate | 2023 |
| GGH Group Limited | Transport & logistics | 2006 |
| GGH Management Limited | Other services | 2016 |
| GGH Service Ltd | Construction | 2025 |
| Ggrs Energie Ltd | Construction | 2020 |
| GH Learning Ltd | Education | 2012 |
| Gharry Limited | Transport & logistics | 2018 |
| Ghazi ALI Limited | Wholesale & retail | 2021 |
| Ghazi Limited | Education | 2013 |
| Ghee GUD Ltd | Wholesale & retail | 2025 |
| Gherardi Universal Beverage Solutions Ltd | Professional & scientific | 2025 |
| GHI Private Limited | Administrative & support | 2018 |
| Ghiyas & Brothers Limited | Hospitality | 2025 |
| Ghosh Strategy & Solutions Limited | Information & communication | 2024 |
| Ghouls Magazine Limited | Professional & scientific | 2026 |
| GHT SYS Limited | Information & communication | 2017 |
| Giffy Planet Ltd | Wholesale & retail | 2025 |
| Gift Thanx Limited | Wholesale & retail | 2018 |
| Gigascale Consultant Ltd | Education | 2026 |
| Gilguzi Limited | Wholesale & retail | 2021 |
| Gillcrest Properties Limited | Real estate | 2017 |
| Gillingham Colburn Limited | Construction | 2014 |
| Gimi's Electrical Ltd | Construction | 2026 |
| Gina Lavender Limited | Administrative & support | 2022 |
| Giraffe Finance Limited | Financial services | 2017 |
| GJ 5 Aalupuri & Omlet Center Ltd | Hospitality | 2024 |
| GJ Window Shine Limited | Administrative & support | 2022 |
| Gjrl Limited | Professional & scientific | 2025 |
| GK Aquatech Limited | Construction | 2026 |
| GK Maintenance Service Ltd | Construction | 2025 |
| GKC Management Ltd | Real estate | 2018 |
| GKP Partnership Limited | Professional & scientific | 2003 |
| Gkpp Limited | Professional & scientific | 2023 |
| GL Infinity Limited | Transport & logistics | 2024 |
| Glamour Nails & Beauty Ltd | Other services | 2026 |
| Glaze Like Dave Ltd | Construction | 2022 |
| Glazegems Ltd | Wholesale & retail | 2021 |
| Glen and More Rents Limited | Financial services | 2021 |
| Glencoe Court Management Ltd | Administrative & support | 1998 |
| Gleneask Ventures Ltd | Hospitality | 2022 |
| Glenmore Care Ltd | Professional & scientific | 2023 |
| Glenmore Consortium Ltd | Real estate | 2012 |
| Glenmore Estate Agent Limited | Real estate | 1999 |
| Glenmore Finance Ltd | Financial services | 2012 |
| Glenmore Maintenance Ltd | Construction | 2024 |
| Glenmore Property Services Limited | Real estate | 1995 |
| Glenmore Wealth Limited | Financial services | 2025 |
| Glenn Blakeborough Ltd | Professional & scientific | 2013 |
| Glenpine Limited | Health & social care | 2017 |
| Glifa Holdco Limited | Administrative & support | 2019 |
| Glitz Events Ltd | Arts & recreation | 2017 |
| Global Accountant Ltd | Professional & scientific | 2003 |
| Global Barter Limited | Professional & scientific | 2007 |
| Global Cooling Limited | Energy | 2026 |
| Global Cycle Trade Limited | Wholesale & retail | 2025 |
| Global Development Services Ltd | Wholesale & retail | 2024 |
| Global Disaster Relief Fund | Health & social care | 2005 |
| Global Export Sourcing Ltd | Wholesale & retail | 2022 |
| Global Express Solutions Ltd | Transport & logistics | 2006 |
| Global Express Supplies Limited | Wholesale & retail | 2014 |
| Global Fresh Ltd | Wholesale & retail | 2014 |
| Global Garages Limited | Real estate | 2018 |
| Global Granito Ltd | Wholesale & retail | 2017 |
| Global Haly Limited | Real estate | 2022 |
| Global Homes Estates Limited | Real estate | 2004 |
| Global Institute of Sport Limited | Education | 2023 |
| Global Medical Equipment Ltd | Wholesale & retail | 2023 |
| Global Mobility & Investor Solutions Ltd | Administrative & support | 2015 |
| Global Office Solution Ltd | Professional & scientific | 2005 |
| Global Prime Business Ltd | Information & communication | 2009 |
| Global Reach Consulting and Recruitment Ltd | Administrative & support | 2013 |
| Global Relocation Properties Ltd | Hospitality | 2021 |
| Global Roots of India Ltd | Wholesale & retail | 2025 |