| Gibovendee UK Ltd | Agriculture & fishing | 2018 |
| Gilbert Family Investments Limited | Agriculture & fishing | 2024 |
| Giles Thurston Limited | Information & communication | 2025 |
| Gillett Cladding Limited | Construction | 2014 |
| Gironex Limited | Professional & scientific | 2018 |
| Giulia Micillo Echoservices Ltd | Health & social care | 2024 |
| Give Your Best C.I.C. | Wholesale & retail | 2020 |
| Glally Ltd | Wholesale & retail | 2025 |
| Glam Dusters Limited | Administrative & support | 2022 |
| Glamorgan Wanderers Rugby Football Club Limited | Arts & recreation | 2019 |
| Global Commodity Ltd | Wholesale & retail | 2022 |
| Global Languages Limited | Professional & scientific | 2024 |
| Globe X Ltd | Professional & scientific | 2000 |
| GM Buses (2010) Ltd | Transport & logistics | 2010 |
| GM Ellis Property Limited | Real estate | 2018 |
| Go Go Sugar Ltd. | Hospitality | 2013 |
| Gocm Ltd | Construction | 2024 |
| Goddess Nails Ltd | Other services | 2025 |
| Godfrey's Vehicle Services Ltd | Wholesale & retail | 2022 |
| Goff Holdings Ltd | Real estate | 2013 |
| Gold Dust Mentoring Limited | Administrative & support | 2014 |
| Goldberg Capital Management Limited | Professional & scientific | 2006 |
| Goldbricks Real Estate Limited | Real estate | 2026 |
| Golden Dragon Soham Ltd | Hospitality | 2025 |
| Golden Grove 1865 Limited | Professional & scientific | 2025 |
| Golden Sameday International Limited | Transport & logistics | 2025 |
| Goldfinger Ventures Ltd | Financial services | 2023 |
| Goldline Enterprises Limited | Information & communication | 1998 |
| Goldplus Asset Management Limited | Information & communication | 2014 |
| Goldsack Project Services Limited | Administrative & support | 2012 |
| Goliath Nutrition Limited | Wholesale & retail | 2015 |
| Good Vibes Local CIC | Information & communication | 2020 |
| Goodwill Roofing & Cladding Limited | Construction | 1998 |
| Gooey Puds Limited | Hospitality | 2020 |
| Gourmet Brownie Limited | Manufacturing | 2013 |
| Gowing Air Conditioning Limited | Construction | 2003 |
| Gowing Carbon Reduction Solutions Limited | Construction | 2025 |
| Gowing Group Limited | Financial services | 2024 |
| Gowing Hire Limited | Administrative & support | 2025 |
| Gowing Property Developments and Services Ltd | Construction | 2014 |
| Gowing Resources Limited | Administrative & support | 2025 |
| Gowing Vehicle and Plant Hire Ltd | Administrative & support | 2014 |
| Gowing Ventilation and Fabrication Limited | Manufacturing | 2024 |
| GP Bugg and SON Limited | Construction | 2019 |
| GPS Group Holdings Limited | Financial services | 2019 |
| GPS Group Investments | Financial services | 2019 |
| Grace Digital Consulting UK Ltd | Information & communication | 2025 |
| Grace Gardens ELY Limited | Real estate | 2010 |
| Grace Oliver Limited | Professional & scientific | 2021 |
| Grace Schools | Education | 2013 |
| Grade SIX Supplies Limited | Wholesale & retail | 2002 |
| Graham Landick Consulting Limited | Professional & scientific | 2015 |
| Grain Culture Ltd | Manufacturing | 2026 |
| Grampiot Limited | Administrative & support | 2024 |
| Grand Finish Plastering Ltd | Construction | 2023 |
| Graphis Limited | Other services | 2018 |
| Gravel Farm Ltd | Hospitality | 2018 |
| Grayling Park (Management Company) Limited | Households | 2022 |
| Grays Property Developments Ltd | Construction | 2019 |
| GRC Elearning Limited | Information & communication | 2018 |
| GRC International Group Limited | Professional & scientific | 2017 |
| Grci Law Limited | Professional & scientific | 2018 |
| Great Norwood House RTM Company Limited | Households | 2024 |
| Great Ouse Finance Support Limited | Professional & scientific | 2023 |
| Greater Manchester Buses (2010) Limited | Transport & logistics | 2010 |
| Greek Premium Flavour Ltd | Wholesale & retail | 2024 |
| Green Caterpillar Consulting Limited | Professional & scientific | 2015 |
| Green City Electrical Services Ltd | Construction | 2024 |
| Green Cleaning Services (Cambridge) Ltd | Administrative & support | 2012 |
| Green Gardens (UK) ELY Ltd | Administrative & support | 2022 |
| Green HAT Company (Cambridge) Limited | Construction | 2018 |
| Green HAT Renewables Ltd | Construction | 2024 |
| Green House Twisters Ltd | Agriculture & fishing | 2025 |
| Greenchase Developments Ltd | Construction | 2023 |
| Greenchase Holdings Ltd | Financial services | 2024 |
| Greens Farming Limited | Agriculture & fishing | 1986 |
| Greens of Soham Limited | Agriculture & fishing | 2000 |
| Greenseed International Limited | Agriculture & fishing | 1979 |
| Greensman Groundcare Ltd | Administrative & support | 2025 |
| Greenwin Care UK Limited | Health & social care | 2024 |
| Greenwin Global (UK) Limited | Energy | 2025 |
| Grevillehurst House Freehold Limited | Real estate | 2025 |
| Grevillehurst House Management Company Limited | Households | 2014 |
| Greyhound Fordham Limited | Hospitality | 2026 |
| Greys JAC Holdings Limited | Financial services | 2023 |
| Gridcert Limited | Professional & scientific | 2002 |
| Griffin-Singh Management Company Ltd | Real estate | 2005 |
| Ground Force (ELY) Limited | Construction | 2025 |
| Grove Farm Ellington Ltd | Real estate | 2018 |
| Grovemere Holdings Limited | Professional & scientific | 1989 |
| Grovemere Property Limited | Real estate | 1957 |
| Grow NOW Ltd | Professional & scientific | 2024 |
| Growth Consultant Services Ltd | Professional & scientific | 2016 |
| GRT Autos Ltd | Wholesale & retail | 2025 |
| GSI Payroll Bureau Ltd | Professional & scientific | 2021 |
| GSI Translations Ltd | Extraterritorial | 2015 |
| GSS Farming Limited | Agriculture & fishing | 2006 |
| Guzel Barbers Ltd | Other services | 2022 |
| Guzel Food Centre Ltd | Wholesale & retail | 2023 |
| GW & HJ Farms Holdings Limited | Financial services | 2022 |