| Freshtec Agricultural Consultancy Limited | Administrative & support | 2012 |
| Friendly Farm Connections CIC | Education | 2026 |
| Friends of Peterhouse | Education | 1979 |
| Frog Prop Developments Limited | Construction | 2024 |
| Frog Vehicle Developments Limited | Wholesale & retail | 2019 |
| Froggy Studios Limited | Information & communication | 2026 |
| Frontal Care Ltd | Administrative & support | 2019 |
| Frontal Care Plus Ltd | Hospitality | 2023 |
| Frozen Solid DCT Limited | Manufacturing | 2019 |
| FS Recruitment Ltd | Extraterritorial | 2008 |
| Fuelbar Ltd | Wholesale & retail | 2025 |
| Fulbourn Medical Limited | Manufacturing | 1992 |
| Fulbourn Wood Ltd | Extraterritorial | 2013 |
| Fulcrum Health Limited | Administrative & support | 1996 |
| Full Focus Limited | Professional & scientific | 2018 |
| Function Pilates Limited | Other services | 2024 |
| Funky Friday Limited | Administrative & support | 2010 |
| Funky Recordz Ltd | Arts & recreation | 2025 |
| Funny Girl Fiction Limited | Information & communication | 2015 |
| Funny Girl Films Limited | Arts & recreation | 2002 |
| Fusion Competition Limited | Arts & recreation | 2026 |
| Fusion Global Enterprises Ltd | Education | 2022 |
| Fusion Motorsport International Ltd | Arts & recreation | 2026 |
| Fusion Motorsport Limited | Arts & recreation | 2010 |
| Fusion Travel Solutions Limited | Transport & logistics | 2017 |
| Fusion Welding Ltd | Manufacturing | 2022 |
| Future Management Solutions Ltd | Professional & scientific | 2024 |
| G B Housing Ltd | Real estate | 2025 |
| G C Dixon and SON HAY & Straw Limited | Agriculture & fishing | 2015 |
| G C E Groundworks Ltd. | Construction | 2009 |
| G M Kitchens and Worktops Ltd | Construction | 2022 |
| G T Picton Limited | Agriculture & fishing | 1955 |
| G W Forster Consulting Ltd | Financial services | 2019 |
| G&B Developments Limited | Real estate | 2019 |
| G&C Scaffolding Ltd | Construction | 2024 |
| G&S Painting Ltd | Construction | 2022 |
| G. & J. Saunders & Sons Limited | Agriculture & fishing | 1997 |
| G. M Solidsurfaces Limited | Manufacturing | 2013 |
| G.B. Brudenell Limited | Real estate | 1945 |
| G1 Medical Limited | Health & social care | 2015 |
| G3 Construction ( Cambs) Ltd | Construction | 2023 |
| Ga&Fm Logistics Tansport Ltd | Transport & logistics | 2025 |
| Gabriella Trans Ltd | Transport & logistics | 2020 |
| Gaffertape.Com. Ltd | Administrative & support | 1999 |
| Gainfort Limited | Other services | 2010 |
| Galexia Creative Agency Ltd | Professional & scientific | 2020 |
| Gama Care Personnel Ltd | Health & social care | 2020 |
| Game on Arcade Ltd | Manufacturing | 2025 |
| Gameweaver Ltd | Information & communication | 2007 |
| Garage Door Wizards Ltd | Construction | 2017 |
| Garde Munro Limited | Professional & scientific | 2017 |
| Garden Grill 132 Ltd | Hospitality | 2025 |
| Garner Commercials Ltd | Wholesale & retail | 2020 |
| GAS Analysis and Sensing Group Limited | Other services | 2015 |
| Gatehouse Estates Properties Ltd | Real estate | 2021 |
| Gatehouse Estates Property Management Limited | Real estate | 2000 |
| Gatehouse International Ltd | Real estate | 2001 |
| Gateway Print Services Limited | Manufacturing | 2025 |
| GAUDI/12 Limited | Real estate | 2025 |
| Gavin Walters Limited | Information & communication | 2008 |
| Gazelle Theatre CIC | Arts & recreation | 2024 |
| GB Blue Service Ltd | Transport & logistics | 2023 |
| GB Builders and Maintenance Ltd | Construction | 2015 |
| GB Delivery Services Ltd | Transport & logistics | 2019 |
| GB Devcon Ltd | Transport & logistics | 2024 |
| GB Holdings Cambs Ltd | Real estate | 2022 |
| Gbat Properties Ltd | Real estate | 2019 |
| GBI Haulage Ltd | Transport & logistics | 2020 |
| Gbmt Civil Engineering Ltd | Construction | 2023 |
| GCF Operations Ltd | Professional & scientific | 2022 |
| GDC Holding Limited | Financial services | 2000 |
| Gearedtowork Limited | Information & communication | 2017 |
| Gearflex Ltd | Manufacturing | 2024 |
| Gearup Autohub Ltd | Wholesale & retail | 2025 |
| Gego Ltd | Wholesale & retail | 2011 |
| Gelert Consulting Limited | Professional & scientific | 2020 |
| Gemini Creative Marketing Limited | Professional & scientific | 2020 |
| Gemstone Learning Limited | Professional & scientific | 2008 |
| GEN B Consulting Ltd | Information & communication | 2025 |
| Genesis Consulting Ltd | Professional & scientific | 2022 |
| Geni Engineering Ltd | Professional & scientific | 2023 |
| Genson Civils and Groundworks Ltd | Construction | 2024 |
| Gentle Approach Dental Ltd. | Health & social care | 2015 |
| GEOCRIS92 Ltd | Transport & logistics | 2024 |
| George (Westgate) Limited | Financial services | 2024 |
| George Family Holdings Limited | Financial services | 2024 |
| George Family Investment Company Limited | Financial services | 2022 |
| George First Limited | Transport & logistics | 2020 |
| George Group Holdings Limited | Financial services | 2024 |
| George Group Investments Limited | Financial services | 2024 |
| George Houghton Limited | Extraterritorial | 2025 |
| George Investments Limited | Extraterritorial | 2025 |
| George James Antiques Ltd | Wholesale & retail | 2021 |
| George Living Limited | Extraterritorial | 2023 |
| George Newman Plant Limited | Mining & quarrying | 2019 |
| George Partnership Holdings Limited | Construction | 2022 |
| George Royston Limited | Extraterritorial | 2025 |
| GET Customers Ltd | Education | 2020 |
| GGK Haulage Ltd | Administrative & support | 2024 |
| GH Payscheme Limited | Professional & scientific | 1999 |