| Force Group Construction Ltd | Other services | 2013 |
| Ford Property Investment Ltd | Real estate | 2021 |
| Forest Development (London) Ltd | Real estate | 2020 |
| Forest Edge Group Ltd | Real estate | 2021 |
| Forest Tales Limited | Information & communication | 2014 |
| Forfirm Consulting Limited | Information & communication | 2019 |
| Forge Freelance Solutions Ltd | Information & communication | 2024 |
| Form Structural Design Limited | Construction | 2002 |
| Formation Friend Limited | Administrative & support | 2018 |
| Forster Management Services Ltd. | Professional & scientific | 2010 |
| Foundry Thirty Ltd | Real estate | 2026 |
| Four Seasons (Dartford) Limited | Administrative & support | 2012 |
| Four Years Limited | Professional & scientific | 2025 |
| Fourmi Solutions Limited | Professional & scientific | 2026 |
| FOX Exhibitions Limited | Education | 2025 |
| FOX Hollow (Walton on Thames) Management Company Limited | Households | 2007 |
| Foxfield 73 Limited | Financial services | 2025 |
| Frace Ltd | Construction | 2013 |
| Francis & Arnold Limited | Financial services | 2015 |
| Francis Browne Limited | Administrative & support | 2010 |
| Frank Brooke Limited | Administrative & support | 2016 |
| Frank Fehr & Co.Limited | Construction | 1956 |
| Frankham 2020 Limited | Financial services | 2023 |
| Frankham Consultancy Group Limited | Professional & scientific | 2002 |
| Frankham Developments (Godstone) Limited | Real estate | 2021 |
| Frankham Developments Limited | Construction | 2012 |
| Frankham Filming LLP | | 2025 |
| Frankham Holdings Limited | Real estate | 2014 |
| Frankham National Limited | Financial services | 2023 |
| Frankham Projects Limited | Administrative & support | 1998 |
| Frankham Risk Management Services Limited | Professional & scientific | 2004 |
| Franklin-Forbes LLP | | 2024 |
| Franvill Properties Ltd | Real estate | 2023 |
| Fraser Harvey Limited | Financial services | 2026 |
| Freeborn Carpentry Ltd | Construction | 2018 |
| Freeprop Limited | Real estate | 2015 |
| Freesolodesign Limited | Arts & recreation | 2019 |
| Freespirit Enterprise Ltd | Administrative & support | 2011 |
| French Bellgard Construction Limited | Wholesale & retail | 1990 |
| Fresh Food Express Ltd | Wholesale & retail | 2025 |
| Fresh RMZ Cleaning Ltd | Administrative & support | 2023 |
| Freya B Heating Limited | Construction | 2004 |
| Friends of Queen Mary's Sidcup Limited | Health & social care | 2009 |
| Friends of the Retreat Cafe Limited | Hospitality | 2020 |
| Friends of the Retreat Events Company Limited | Hospitality | 2025 |
| Friends Shops Limited | Wholesale & retail | 2008 |
| Friern Manor Country House Hotel Limited | Hospitality | 1995 |
| Fries U Like Ltd | Hospitality | 2024 |
| Fromoverhere Ltd | Administrative & support | 2011 |
| Frost Duval Limited | Construction | 1986 |
| Frying PAN (Orpington) Limited | Hospitality | 2014 |
| Fsquared Galleries Limited | Wholesale & retail | 2019 |
| Fudi People Ltd | Agriculture & fishing | 2022 |
| Fuelling Dreams Ltd | Information & communication | 2024 |
| Fuimus Holdings Limited | Financial services | 2019 |
| Fuimus Services Limited | Construction | 2019 |
| Full Deck Consulting Limited | Other services | 2013 |
| Full Potential Garden Services Limited | Professional & scientific | 2021 |
| Full Tilt Solutions Ltd | Administrative & support | 2024 |
| Fuller Technical Services Limited | Construction | 2016 |
| Fusion Brand Managers Ltd | Professional & scientific | 2025 |
| Future Telecoms Rigging Ltd | Information & communication | 2021 |
| FX Property Solutions Limited | Real estate | 2020 |
| Fynntessential Ltd | Wholesale & retail | 2024 |
| Fyra Ltd | Administrative & support | 2013 |
| G & H Managing Consultants Limited | Professional & scientific | 2012 |
| G and a Floral Designs Ltd | Wholesale & retail | 2015 |
| G F Walls & Ceilings Ltd | Construction | 2015 |
| G J Window Contracts Limited | Administrative & support | 2005 |
| G Moreve Limited | Administrative & support | 2024 |
| G Morgan Rail Solutions Limited | Construction | 2024 |
| G S & R Limited | Construction | 2022 |
| G Wynne Decorating Services Limited | Construction | 2023 |
| G&M Eternal Limited | Real estate | 2019 |
| G&P Electrical Contractors Limited | Construction | 2016 |
| G&Q Global Limited | Other services | 2012 |
| G&T 2025 Limited | Administrative & support | 2025 |
| G. English Electronics Limited | Wholesale & retail | 1975 |
| G. L. Coachworks Limited | Other services | 2009 |
| G.E.S Gymer's Electrical Service Limited | Construction | 2015 |
| G.J. Day Electrical Contractors Limited | Construction | 1998 |
| G.J. Wisdom & Co. Ltd. | Administrative & support | 2004 |
| G4 F.C Limited | Arts & recreation | 2025 |
| G5 & Associates Limited | Wholesale & retail | 2026 |
| G5 Associates Ltd | Wholesale & retail | 2022 |
| GA Engineering Solutions Limited | Professional & scientific | 2023 |
| Gabby 10 Limited | Construction | 2016 |
| Gadget N Support Ltd | Wholesale & retail | 2022 |
| Galatea Consulting Limited | Professional & scientific | 1999 |
| Galhud EYE Ltd | Health & social care | 2019 |
| Galhud Holding Limited | Financial services | 2024 |
| Gallery Flats Management Company Limited | Real estate | 2021 |
| Gallions 81 Limited | Financial services | 2025 |
| Galp Properties Ltd | Real estate | 2025 |
| Game Assets Limited | Professional & scientific | 2018 |
| Game School Limited | Information & communication | 2021 |
| Gamesxchange Limited | Information & communication | 2003 |
| Ganadors Physio Limited | Health & social care | 2024 |
| Garden Revivers Sidcup Ltd | Construction | 2023 |
| Gardenia Lifeline Services Limited | Other services | 2010 |