| Fowlmere Consulting Limited | Professional & scientific | 2023 |
| Fowlmere Engineering Limited | Wholesale & retail | 1965 |
| Foxbo Ltd | Financial services | 2014 |
| Foxfields (Melbourn) Management Company Limited | Households | 2007 |
| Frank Adam Photography Ltd | Professional & scientific | 2002 |
| Fraser Clemence Ltd | Real estate | 2023 |
| FRC Portfolio Ltd | Extraterritorial | 2015 |
| Frederick Couriers Limited | Transport & logistics | 2023 |
| Fredham Ltd | Professional & scientific | 1995 |
| Freestyle (Trade) Ltd. | Wholesale & retail | 2001 |
| Freestyle Trade (UK) Limited | Extraterritorial | 2006 |
| Freight Partners Limited | Transport & logistics | 2016 |
| Freshbundle Limited | Wholesale & retail | 2025 |
| Freshwood Group Ltd | Administrative & support | 2021 |
| Freya Developments Ltd | Construction | 2022 |
| Fritchley Clinical Development Ltd | Professional & scientific | 2022 |
| Frontrunner Tech Limited | Information & communication | 2026 |
| Fruition London Ltd | Information & communication | 2001 |
| Frunzaemil Ltd | Manufacturing | 2026 |
| FSR Publications Limited | Information & communication | 1954 |
| FT53 Limited | Real estate | 2022 |
| Fulin Restaurant Limited | Hospitality | 2013 |
| Furnicare Ltd | Other services | 2016 |
| Fusion Hospitality Services Ltd | Professional & scientific | 2020 |
| Fusion Landscaping and Maintenance Limited | Other services | 2002 |
| Future Perfect (Healthcare) Limited | Information & communication | 2020 |
| Future World Design Limited | Professional & scientific | 2022 |
| Futures Psychology Ltd | Education | 2025 |
| FW Forward Coaching Ltd | Education | 2026 |
| Fyfield Farms Limited | Extraterritorial | 2003 |
| G & R Maintenance Limited | Administrative & support | 2006 |
| G C Investments Ltd | Professional & scientific | 2011 |
| G Global Solutions Ltd | Professional & scientific | 2014 |
| G I C Services Ltd | Agriculture & fishing | 2025 |
| G.C.& J.C.Wilkerson Limited | Agriculture & fishing | 1956 |
| G.I.C. Trustees Limited | Financial services | 1981 |
| G.M. Briton (Public Works) Limited | Construction | 1979 |
| G.S.W Building Ltd | Construction | 2019 |
| G34 Holdings Ltd | Real estate | 2022 |
| Galloway Farms Limited | Agriculture & fishing | 2021 |
| Game Export UK Limited | Information & communication | 2019 |
| Gary Paffett Racing Limited | Arts & recreation | 2001 |
| Gasrad Ltd | Health & social care | 2010 |
| Gates Near ME Ltd | Manufacturing | 2025 |
| Gateway 120 Limited | Professional & scientific | 2011 |
| GB2BD Ltd | Wholesale & retail | 2026 |
| GC Validation Limited | Education | 2013 |
| GCR Camprop Eight Limited | Construction | 2018 |
| GCR Camprop Eleven Limited | Construction | 2021 |
| GCR Camprop Fifteen Limited | Construction | 2022 |
| GCR Camprop Four Limited | Construction | 2017 |
| GCR Camprop Fourteen Limited | Construction | 2022 |
| GCR Camprop Seven Limited | Construction | 2017 |
| GCR Camprop Seventeen Limited | Construction | 2025 |
| GCR Camprop SIX Limited | Real estate | 2017 |
| GCR Camprop Sixteen Limited | Real estate | 2022 |
| GCR Camprop TEN Limited | Construction | 2019 |
| GCR Private Equity Limited | Professional & scientific | 2013 |
| GCS Construction Media Limited | Professional & scientific | 2025 |
| GD Roofing Services Ltd | Construction | 2018 |
| GE Consulting Services (UK) Limited | Professional & scientific | 2013 |
| Geestdesign Limited | Professional & scientific | 2014 |
| GEM OD Consulting Limited | Professional & scientific | 2013 |
| Gender Wise CIC | Professional & scientific | 2021 |
| Geoffrey Dahl Design Limited | Professional & scientific | 2015 |
| Gess Holdings Ltd | Financial services | 2026 |
| Gess Home Improvements Limited | Construction | 2014 |
| Gess Renewables Limited | Construction | 2013 |
| GFX Studio Limited | Information & communication | 2018 |
| Gigforce Limited | Administrative & support | 2020 |
| Gilbros Limited | Administrative & support | 2000 |
| Giles Hanglin Limited | Professional & scientific | 2015 |
| Gilhooly Commercial Ltd | Wholesale & retail | 2019 |
| Ginger Brix Limited | Real estate | 2017 |
| Gingerhill Properties Limited | Administrative & support | 2009 |
| GJF Enterprises Ltd | Wholesale & retail | 2025 |
| GJG Cleaning Services Limited | Administrative & support | 2006 |
| GKX Properties Limited | Real estate | 2021 |
| Glamour Concept Company Ltd | Administrative & support | 2020 |
| Glass Solutions Ltd | Manufacturing | 2000 |
| Glebe Road Industrial Estate (1988) Limited | Real estate | 1988 |
| Global Stone Management Limited | Professional & scientific | 2016 |
| Global Technologies International (UK) Ltd | Wholesale & retail | 2002 |
| Glovers Newspapers Ltd | Wholesale & retail | 2012 |
| Gmax Technology Ltd | Professional & scientific | 2012 |
| GMG East Limited | Financial services | 2023 |
| GMG Property Ltd | Real estate | 2023 |
| Gnoesys Ltd | Professional & scientific | 2026 |
| Go-Haul Limited | Transport & logistics | 2016 |
| Gobindosree Spice Ltd | Hospitality | 2019 |
| Goddard Propco Holdings Limited | Financial services | 2019 |
| Goddardpropco Limited | Real estate | 2019 |
| Godfrey & Hicks Builders Limited | Construction | 1998 |
| Goldhawke Construction Limited | Construction | 2006 |
| Goldscheider Advisory Limited | Professional & scientific | 2026 |
| Golfbox Limited | Arts & recreation | 2024 |
| Golfqube Limited | Arts & recreation | 2025 |
| Gomito Productions | Arts & recreation | 2007 |
| Goodman House Management Company Limited | Real estate | 2019 |
| Goodwin Campling Ltd. | Construction | 2014 |