| Funk'D Dance Limited | Arts & recreation | 2019 |
| Fuse Projects Ltd | Administrative & support | 2015 |
| Fuse Technical Solutions Ltd | Professional & scientific | 2024 |
| Fusion People Consultancy Services Limited | Administrative & support | 2023 |
| Fusion People Employees' Trustee Limited | Financial services | 2006 |
| Fusion People Infrastructure Limited | Administrative & support | 2023 |
| Fusion People Limited | Administrative & support | 2003 |
| Futura Bright Limited | Professional & scientific | 2024 |
| Future Active Workforce Community Interest Company | Education | 2020 |
| Future Fit for Business Limited | Administrative & support | 2021 |
| Future Fit Group Ltd | Financial services | 2021 |
| Future Fit Sport Ltd | Administrative & support | 2025 |
| Future Fit Technologies Limited | Information & communication | 2021 |
| Future Fit Training Limited | Education | 2002 |
| Future Greats Limited | Professional & scientific | 2025 |
| Future Mortgage Management Limited | Financial services | 2003 |
| Future Oceans CIC | Professional & scientific | 2023 |
| Future Point 4 Business Limited | Information & communication | 2015 |
| Future Success Sports Ltd | Arts & recreation | 2025 |
| Future Technologies (NW) Ltd | Professional & scientific | 2020 |
| Future U Fitness Limited | Arts & recreation | 2018 |
| Futuristic Films Limited | Professional & scientific | 2025 |
| FYR Consultancy(Fire Safety) Limited | Professional & scientific | 2023 |
| Fyrma Ltd | Wholesale & retail | 2026 |
| G & B Roofing Limited | Construction | 2009 |
| G & C Financial Services Limited | Financial services | 2003 |
| G & T Door Access Solutions Ltd | Construction | 2009 |
| G and E Projects Limited | Construction | 2014 |
| G ASH Consultancy Limited | Public administration | 2024 |
| G Duff Decorating Services Ltd | Construction | 2025 |
| G E Nichols Flooring Limited | Wholesale & retail | 2012 |
| G M Drinks Limited | Wholesale & retail | 2012 |
| G M Drinks of Hampshire Limited | Wholesale & retail | 2015 |
| G P Autos Portsmouth Limited | Wholesale & retail | 2018 |
| G P Watson Limited | Manufacturing | 1994 |
| G Pictures Ltd | Information & communication | 2019 |
| G Squared Carpentry & Building Services Ltd | Construction | 2015 |
| G&D Interiors Limited | Construction | 2021 |
| G&F Services (Southern) Limited | Construction | 2020 |
| G&J Air Conditioning Limited | Professional & scientific | 2024 |
| G-G’S Corner Ltd | Hospitality | 2023 |
| G. Seymour & SON Limited | Water & waste | 1964 |
| G.R. Data Services Ltd | Information & communication | 2011 |
| G.R.C Group Limited | Wholesale & retail | 2022 |
| G.T Securities Limited | Professional & scientific | 2020 |
| G.T Tooling Ltd | Manufacturing | 2011 |
| GA Electrical Waste Limited | Water & waste | 2016 |
| GA Gourmet Limited | Financial services | 2018 |
| Gabbitas Law Limited | Professional & scientific | 2026 |
| Gables Brickwork Service Limited | Construction | 2008 |
| Gadgetservices.Com Ltd | Wholesale & retail | 2016 |
| Gadiwang Limited | Professional & scientific | 2013 |
| Gage (Investments) Limited | Real estate | 1963 |
| Gage Properties Limited | Real estate | 1988 |
| Gaiatech Ltd | Professional & scientific | 2026 |
| Gainsborough Specsavers Hearcare Limited | Wholesale & retail | 2026 |
| Gainsborough Specsavers Limited | Wholesale & retail | 2007 |
| Gainsborough Visionplus Limited | Wholesale & retail | 2007 |
| Galactic Property Solutions Limited | Construction | 2024 |
| Galashiels Specsavers Limited | Wholesale & retail | 2002 |
| Gamble & Co Removals Ltd | Transport & logistics | 2025 |
| Gamblin T & a Services Limited | Agriculture & fishing | 2003 |
| Gandhi Fareham Limited | Hospitality | 2017 |
| Gandor Limited | Administrative & support | 2002 |
| Garden Force (Hampshire) Limited | Administrative & support | 2021 |
| Gardens of the Future Limited | Administrative & support | 2015 |
| Garrison Motor Company Ltd | Wholesale & retail | 2025 |
| Garwood Wealth Management Limited | Financial services | 2013 |
| Gary Clark Advisory Limited | Professional & scientific | 2026 |
| Gary Lander Ltd | Real estate | 2022 |
| GAS Electrical Ltd | Construction | 2009 |
| Gas-Tech Domestic Heating Limited | Construction | 2014 |
| Gasmaster (Bournemouth) Limited | Other services | 2003 |
| Gasp OTT Ltd | Transport & logistics | 2022 |
| Gates House Gardens Ltd | Construction | 2021 |
| Gateshead Specsavers Limited | Wholesale & retail | 2004 |
| Gateshead Team Valley Specsavers Limited | Wholesale & retail | 2023 |
| Gateshead Visionplus Limited | Wholesale & retail | 2004 |
| Gateway Infrastructure GP (UK) LLP | | 2025 |
| Gateway Infrastructure Investments, L.P. | | 2007 |
| Gateway Transfers Ltd | Transport & logistics | 2020 |
| Gateway UK Water II, L.P. | | 2008 |
| Gateway UK Water, L.P. | | 2008 |
| Gatewayhub Community Interest Company | Health & social care | 2025 |
| Gattaca PLC | Financial services | 2002 |
| Gattaca Projects Limited | Professional & scientific | 1997 |
| GAW Consultants Limited | Administrative & support | 2019 |
| GB Cleaning and Laundry Services Ltd | Administrative & support | 2024 |
| GB Labs Limited | Manufacturing | 2015 |
| GB Landscapes Limited | Construction | 2022 |
| GBM Interiors Limited | Construction | 2018 |
| GC Projects Ltd | Professional & scientific | 2016 |
| GCB Property Management Limited | Real estate | 2025 |
| GD Plumbing Ltd | Construction | 2025 |
| GD Southern Ltd | Construction | 2020 |
| GDK (Contracts) Limited | Extraterritorial | 2000 |
| GDK AC Holdings Limited | Financial services | 2025 |
| GDK Air Conditioning Limited | Construction | 2002 |
| GDK Limited | Extraterritorial | 1998 |
| Gecko Data Consulting Limited | Information & communication | 2020 |