| Gesco Limited | Financial services | 1960 |
| Ghanooosh Ltd | Wholesale & retail | 2023 |
| Gijk Limited | Financial services | 2023 |
| Gill’S Kitchen Ltd | Hospitality | 2025 |
| GJB Projects Ltd | Administrative & support | 2022 |
| Gjcs Services Limited | Health & social care | 2021 |
| GL Inspection Ltd | Professional & scientific | 2024 |
| Glandsurg International Ltd | Health & social care | 2022 |
| Glaze Systems Ltd | Construction | 2025 |
| Glen Top Developments Ltd | Construction | 2018 |
| Glencoe Montague Ltd | Real estate | 2024 |
| Glenrosa Payroll Services Ltd | Professional & scientific | 2012 |
| Glitz Medical Services Ltd | Health & social care | 2025 |
| Global Beauty Tower Ltd | Other services | 2023 |
| Global Cube Courses Ltd | Education | 2026 |
| Global Food Tower Ltd | Wholesale & retail | 2019 |
| Global Health Environments Limited | Construction | 2013 |
| Global Plant Supplies Limited | Wholesale & retail | 2010 |
| Global Titans Limited | Wholesale & retail | 2025 |
| Globaluterra Enterprises Ltd | Wholesale & retail | 2024 |
| Globe Abodes Ltd | Real estate | 2024 |
| Glory Trading Ltd | Real estate | 2024 |
| Glossop Cars Ltd | Transport & logistics | 2025 |
| Glowlabsuk Ltd | Other services | 2025 |
| GMA Assets Limited | Real estate | 2024 |
| Gmga Management Solutions Ltd | Manufacturing | 2015 |
| GNN Brokerage Limited | Information & communication | 2022 |
| GNN Group Limited | Information & communication | 2020 |
| GNN Property Holdings Limited | Real estate | 2025 |
| GNN Solutions Limited | Information & communication | 2020 |
| Gnosall Dental Practice Limited | Health & social care | 2024 |
| Go Dental Ltd | Health & social care | 2023 |
| Gold Filled Ltd | Manufacturing | 2016 |
| Golden CAP Dent Limited | Health & social care | 2024 |
| Golden Thai Kitchen Limited | Hospitality | 2022 |
| Golden Ticket Competitions Ltd | Wholesale & retail | 2024 |
| Golflinks Club Ltd | Arts & recreation | 2025 |
| Gomotorcargo Ltd | Wholesale & retail | 2025 |
| Gordon Overthrow Glazing Ltd | Construction | 2006 |
| Goto Solutions Limited | Professional & scientific | 2017 |
| GPM Properties Limited | Real estate | 2003 |
| Grace Oaks Solutions Ltd | Real estate | 2025 |
| Grace Technical Services Limited | Information & communication | 2016 |
| Graeme Nimmo Mountaineering Limited | Education | 2019 |
| Graham Hughes Ltd | Professional & scientific | 2010 |
| Graham Thomas UK Ltd | Wholesale & retail | 2008 |
| Grand Mediterranean Ltd | Hospitality | 2023 |
| Grange Plant Hire Limited | Professional & scientific | 2003 |
| Granite Property Services Ltd | Households | 2025 |
| Grantreel Construction Limited | Construction | 1977 |
| Grantreel Holdings Limited | Financial services | 2012 |
| Gratia Clinic Ltd | Health & social care | 2018 |
| Great IT Company II Ltd | Information & communication | 2025 |
| Great Sutton Kebab Ltd | Hospitality | 2019 |
| Great Sutton Limited | Health & social care | 2017 |
| Great Sutton Wellness Company CIC | Health & social care | 2024 |
| Greatit Co Limited | Information & communication | 2018 |
| Greenacre Orthodontics Ltd | Health & social care | 2019 |
| Greencare Restore Ltd | Construction | 2015 |
| GREGO1980 Limited | Wholesale & retail | 2025 |
| Greif Delta Plastics Holding Ltd | Manufacturing | 2024 |
| Greif Delta Plastics UK Ltd | Manufacturing | 2020 |
| Greyhound Chromatography and Allied Chemicals Limited | Manufacturing | 1981 |
| Gridline Consulting Limited | Professional & scientific | 2016 |
| Griffin Homes Limited | Construction | 1983 |
| Grills & Chills Ltd | Hospitality | 2019 |
| GRO Racing Supplies Ltd | Wholesale & retail | 2015 |
| Ground Breaking Ltd | Other services | 2022 |
| Group Services (North West) Ltd | Water & waste | 2019 |
| GRS Renewables Limited | Construction | 2021 |
| Grss Trading Ltd | Wholesale & retail | 2024 |
| Grzegorz Sucharczuk Transport Ltd. | Transport & logistics | 2014 |
| GS Malhi Ltd | Health & social care | 2024 |
| Gsandford Ltd | Construction | 2026 |
| Gspd Limited | Construction | 2010 |
| GTB Properties Ltd | Real estate | 2025 |
| GTG Transport Ltd | Transport & logistics | 2019 |
| GTJ Holdings and Investments Ltd | Real estate | 2024 |
| Gunatit Ltd | Health & social care | 2022 |
| Gunnersarms@T&K Ltd | Hospitality | 2026 |
| Gwalia Garage Caernarfon Limited | Wholesale & retail | 2013 |
| Gwalia Garage Investments Limited | Real estate | 2026 |
| Gwalia Recovery Limited | Other services | 2003 |
| GWM Properties Ltd | Real estate | 2013 |
| GY Sports Coaching Ltd | Arts & recreation | 2016 |
| GYM2YOU Limited | Administrative & support | 2020 |
| H G Ifan Ltd | Health & social care | 2025 |
| H L Freedman Ltd | Health & social care | 2025 |
| H Ryves Ltd | Health & social care | 2025 |
| Hadenfern Limited | Professional & scientific | 1984 |
| Hairdressers Wirral Limited | Other services | 2013 |
| Hakamon Ltd | Health & social care | 2026 |
| Hakeem Pharma Ltd | Administrative & support | 2022 |
| Halborns Limited | Professional & scientific | 2013 |
| Halco Narrowboats Limited | Wholesale & retail | 2001 |
| Halcyon Dental Ltd | Health & social care | 2023 |
| Hamilton Jones Consulting Limited | Administrative & support | 2024 |
| Hampo Properties Ltd | Real estate | 2020 |
| Hampo Rental Ltd | Real estate | 2019 |
| Hampton ROW Furniture Ltd | Wholesale & retail | 2025 |