| GG Engineering (Euro) Limited | Manufacturing | 2004 |
| GHD Mortgages Limited | Financial services | 2024 |
| Ghettowxrkz Ltd | Wholesale & retail | 2020 |
| Giamaria Ltd | Other services | 2020 |
| Gibbstech Group Limited | Financial services | 2026 |
| Gibson Medical Ltd | Health & social care | 2019 |
| Gifs Haulage Ltd | Transport & logistics | 2025 |
| Gifts From Handpicked Limited | Wholesale & retail | 2010 |
| Gifts Kingdom Ltd | Wholesale & retail | 2010 |
| Gigi's TOO Ltd | Wholesale & retail | 2024 |
| Gigis Bistro Ltd | Hospitality | 2024 |
| Gilbert Farms LLP | | 2009 |
| Gilbert Obire Ltd | Health & social care | 2019 |
| Giles Palmer Ltd | Professional & scientific | 2011 |
| Gill Walker Limited | Health & social care | 2012 |
| Gillanis Nexus Commerce Ltd | Wholesale & retail | 2026 |
| Gilson Consultancy Ltd | Information & communication | 2022 |
| Gilson Gray (England) Limited | Professional & scientific | 2014 |
| GIN Property (Spilsby) Ltd | Construction | 2013 |
| GIN Property Limited | Professional & scientific | 2002 |
| Gindesign Ltd | Information & communication | 2019 |
| Ginger COW Catering Company Limited | Hospitality | 2014 |
| Gingerlane Limited | Real estate | 1992 |
| Girston Limited | Construction | 1993 |
| Girthy Garden Games Limited | Information & communication | 2025 |
| Givicle Ltd | Other services | 2025 |
| Gjjv Limited | Real estate | 2021 |
| GJN Transport Solutions Ltd | Professional & scientific | 2017 |
| GJS Contracting Ltd | Construction | 2024 |
| Gladebrook Limited | Other services | 1993 |
| Glam Loft Ltd | Other services | 2020 |
| Glazepen Limited | | 1977 |
| Glebefoil Limited | Manufacturing | 1984 |
| Glen Lodge Country Park Limited | Hospitality | 2016 |
| Glenmoor Books Ltd | Professional & scientific | 2017 |
| Glenn Blewitt Fascia Soffit and Guttering Ltd | Construction | 2011 |
| Gliders and Racing Models Ltd | Administrative & support | 2016 |
| GLJ Medical Ltd | Health & social care | 2024 |
| GLJ Solutions Ltd | Transport & logistics | 2025 |
| Glo-Crow Limited | Health & social care | 2015 |
| Global Auto Salvage Limited | Professional & scientific | 2011 |
| Global Collaborations UK Ltd | Administrative & support | 2020 |
| Global Diagnostics Solutions Ltd | Professional & scientific | 2020 |
| Global Living Properties Ltd | Construction | 2018 |
| Global Pharma Direct Ltd | Wholesale & retail | 2016 |
| Global Residentials Ltd | Real estate | 2016 |
| Global Tavern Ltd | Information & communication | 2011 |
| Global Turbine Services Limited | Professional & scientific | 2014 |
| Global UNI Access Ltd | Education | 2026 |
| Global Wecare Ltd | Health & social care | 2026 |
| Globe Voyage Ltd | Hospitality | 2026 |
| Globen Holdings Ltd | Administrative & support | 2017 |
| Glorious Confectionery Limited | Manufacturing | 2019 |
| Gloucestershire Spinal Surgery Ltd | Health & social care | 2019 |
| Glow Heating Services Ltd | Construction | 2020 |
| Glowplus Home Services Ltd | Construction | 2020 |
| Glwb Building Services Limited | Construction | 2025 |
| Glyn Davies Organisation Limited | Construction | 2006 |
| Gmks Contracting Ltd | Professional & scientific | 2017 |
| GMO Design Ltd | Wholesale & retail | 2020 |
| GMR Travel Limited | Transport & logistics | 2024 |
| GMS Anaesthetics Ltd | Health & social care | 2019 |
| GMX Heating Limited | Construction | 2022 |
| GN Construction Limited | Construction | 1987 |
| Go Accountancy & Outsourcing Limited | Professional & scientific | 2015 |
| Go Blockchain Ltd | Financial services | 2018 |
| Go Cricket Limited | Professional & scientific | 2005 |
| Go Outsourcing (Back Office) Ltd | Professional & scientific | 2016 |
| Go Outsourcing (Payroll & HR) Ltd | Professional & scientific | 2016 |
| Go Sports Management Ltd | Administrative & support | 2017 |
| GO2BEDS Limited | Wholesale & retail | 2022 |
| GO2HOMES Ltd | Construction | 2024 |
| Gogo Laundry Limited | Administrative & support | 2021 |
| Gogro CIC | Agriculture & fishing | 2022 |
| Gohers Ltd | Wholesale & retail | 2025 |
| Gold Brothers Service England Limited | Other services | 2020 |
| Gold Ripple Limited | Real estate | 2004 |
| Goldbridge Contractors Ltd | Construction | 2024 |
| Golden ARM Fabrication Limited | Manufacturing | 2020 |
| Golden BEE Collective Ltd | Information & communication | 2019 |
| Golden Dynasty Palace Ltd | Hospitality | 2024 |
| Good Choice House Limited | Hospitality | 2023 |
| Good Collective Ltd | Wholesale & retail | 2023 |
| Good Condition Limited | Arts & recreation | 2008 |
| Good Developments Ltd | Real estate | 2025 |
| Good Food Lincoln Limited | Hospitality | 2024 |
| Good Lookin Cookin Ltd | Hospitality | 2008 |
| Goodgoodsuk Ltd | Wholesale & retail | 2024 |
| Goodies of Lincoln Limited | Information & communication | 2003 |
| Goodliffe Ltd | Professional & scientific | 2021 |
| Goodstead Ltd | Hospitality | 2014 |
| Goodwin & Tucker Limited | Construction | 1974 |
| Goodwood Motor Company Limited | Wholesale & retail | 2012 |
| Gordon Fraser Construction Limited | Wholesale & retail | 2002 |
| Gortmellia Consulting Ltd | Professional & scientific | 2012 |
| Gosal Foods Limited | Hospitality | 2025 |
| Gosia Healthcare 998 Limited | Health & social care | 2025 |
| Goss Professional Services Ltd | Wholesale & retail | 2026 |
| Goss Property Ltd | Real estate | 2025 |
| Gotcha Ltd | Real estate | 2024 |