| Freshly Baked Limited | Wholesale & retail | 2008 |
| Freshly Baked Properties Limited | Administrative & support | 2010 |
| Fribbly Games Ltd | Information & communication | 2022 |
| Friends Beauty Ltd | Manufacturing | 2025 |
| Friends of Amersham Limited | Administrative & support | 2013 |
| Friends of Lucy's Mill Bridge CIC | Health & social care | 2017 |
| Frontcourt Capital Limited | Arts & recreation | 2025 |
| Frontcourt Chesham Limited | Arts & recreation | 2025 |
| FSS Solutions Limited | Information & communication | 2019 |
| FTS Electrical Services Limited | Construction | 2024 |
| Fuja Communications Ltd | Professional & scientific | 2012 |
| Full CUP Caregiver Ltd | Health & social care | 2026 |
| Fullers Grove Management Company Limited | Households | 2007 |
| Funisa Ltd | Information & communication | 2024 |
| Furniture Installation Services Ltd | Construction | 2008 |
| Future Winners International Ltd | Professional & scientific | 2006 |
| G & L Scaffolding & Roofing Ltd | Construction | 2011 |
| G D L Plumbing Limited | Construction | 2014 |
| G Globe Ltd | Wholesale & retail | 2024 |
| G P Bryant & Sons Limited | Construction | 2013 |
| G&A Dhillon Properties Limited | Real estate | 2025 |
| G.Popplewell Industrial Cladding and Roofing Limited | Construction | 2017 |
| G2 Investments Limited | Real estate | 1995 |
| G257 Limited | Professional & scientific | 2017 |
| G5 Wheels Ltd | Wholesale & retail | 2023 |
| Gadeside Finance Limited | Households | 2019 |
| Galantos Ltd | Information & communication | 2014 |
| Galantos Management Consultants Ltd | Wholesale & retail | 2003 |
| Game DEV Local Ltd | Information & communication | 2023 |
| Gamestorm Ltd | Information & communication | 2009 |
| Garnett Interactive Ltd | Professional & scientific | 2019 |
| Garry Associates Limited | Professional & scientific | 2020 |
| GAS Flow Heating Ltd | Construction | 2008 |
| Gateville Group Limited | Financial services | 2018 |
| Gateville Limited | Construction | 2012 |
| GB Electrical Solutions Limited | Construction | 2019 |
| GBR Construction Limited | Construction | 2008 |
| GDI Consulting UK Ltd. | Professional & scientific | 1991 |
| GEM Films Ltd | Professional & scientific | 2024 |
| General Counsel Services Limited | Information & communication | 2020 |
| General Maintenance Construction Ltd | Construction | 2024 |
| Genesis Exotics Private Limited | Wholesale & retail | 2025 |
| Genn-Wyatt Ltd | Information & communication | 2014 |
| GEO360 Agro Limited | Wholesale & retail | 2024 |
| Geoinsight Limited | Mining & quarrying | 2003 |
| Germain Homes Limited | Construction | 1997 |
| Ghosh Consulting Ltd | Professional & scientific | 2025 |
| GHS Realty Ltd | Real estate | 2021 |
| Gianluca Sessa Hair and Make-Up Ltd | Other services | 2024 |
| Gil-Lec Holdings Limited | Wholesale & retail | 2020 |
| Giles Keyte Limited | Information & communication | 2009 |
| Gincraft Limited | Wholesale & retail | 2021 |
| Ginnelly Lavelle Holdings Limited | Households | 2022 |
| GJH Audit & Risk Services Ltd | Professional & scientific | 2017 |
| GJP Business Solutions and Consulting Limited | Professional & scientific | 2025 |
| Glen Surveys Limited | Professional & scientific | 1987 |
| Glendale Court (Teignmouth) Limited | Health & social care | 2014 |
| Glis Glis Gone Limited | Agriculture & fishing | 2023 |
| Glisco Ltd | Information & communication | 2021 |
| Global Facilities Partnerships Ltd | Professional & scientific | 2005 |
| Global Infrastructure Anti-Corruption Centre Limited | Professional & scientific | 2008 |
| Global Loyalty Organisation Ltd | Professional & scientific | 2022 |
| Global S&P Limited | Manufacturing | 2018 |
| Global Thought Room C.I.C. | Professional & scientific | 2025 |
| Gloria Budd Limited | Administrative & support | 2004 |
| Glorious Wins Ltd | Arts & recreation | 2026 |
| GLY Ltd | Financial services | 2013 |
| Glynn Construction Limited | Construction | 2003 |
| Go Foods Group Ltd | Information & communication | 2024 |
| GO4IT Developments Ltd | Real estate | 2024 |
| GO4IT Property Investments Ltd | Real estate | 2020 |
| Goat and Chair Antiques Ltd | Wholesale & retail | 2025 |
| GOC Limited | Construction | 2019 |
| Gold and Jewels Ltd | Manufacturing | 2026 |
| Golden Memories Ltd | Financial services | 2024 |
| Golden Realm Film & Light Ltd | Information & communication | 2021 |
| Golden Realm Productions Limited | Information & communication | 2022 |
| Goldenchora Visa Limited | Professional & scientific | 2024 |
| Goldfinch Electrics Limited | Other services | 2020 |
| Golding Bespoke Woodwork Ltd | Manufacturing | 2022 |
| Goldkorn Construction Ltd | Construction | 2025 |
| Goldterm Limited | Households | 1987 |
| Golf Ball Stencil Ltd | Wholesale & retail | 2025 |
| Golzey Automotive Ltd | Wholesale & retail | 2026 |
| Good Enough Limited | Arts & recreation | 2018 |
| Goodyverse Limited | Wholesale & retail | 2023 |
| GOP Ltd | Hospitality | 2016 |
| Gordon Gronbach Lighting Camera Limited | Information & communication | 2007 |
| Gordon Middleton Automobile Engineers Limited | Wholesale & retail | 2025 |
| Gourmet Burgers Chesham Ltd | Hospitality | 2023 |
| Grado Developments Ltd | Real estate | 2023 |
| Graffix Digital Ltd | Manufacturing | 2010 |
| Grafham Construction Limited | Construction | 2008 |
| Grainvin Acres Ltd | Wholesale & retail | 2023 |
| Grandmap Investments Ltd | Real estate | 2019 |
| Granger Family Investment Company Limited | Financial services | 2025 |
| Grant & Khan Industries Ltd | Professional & scientific | 2026 |
| Graphene Animation Ltd | Information & communication | 2025 |
| Gravitas Resourcing Ltd | Professional & scientific | 2007 |
| Graysham Real Estate Advisers Limited | Real estate | 2013 |