| Fairhays Consulting Limited | Professional & scientific | 1999 |
| Fairmile Gate Residents Management Company Limited | Households | 2013 |
| Fairmile Homes Ltd | Construction | 2019 |
| Fairmile Properties Limited | Construction | 2024 |
| Fairmile Real Estate Limited | Real estate | 2024 |
| Faith & Maxwell Construction Ltd | Construction | 2020 |
| Faith Construction Ltd | Construction | 2014 |
| FAN19 Limited | Information & communication | 2019 |
| Fanboy Films Ltd | Extraterritorial | 2010 |
| Farndon Accountancy Limited | Professional & scientific | 1997 |
| Farrant Family Investment Company Limited | Financial services | 2026 |
| Fast Thinking Limited | Information & communication | 2004 |
| Faux Bloom Ltd | Professional & scientific | 2018 |
| Feltham Allen Associates Limited | Other services | 2018 |
| Feltonfleet Enterprises Limited | Transport & logistics | 2025 |
| Feltonfleet School Trust Limited | Education | 1967 |
| Fernlea Place Management 2 Limited | Households | 2021 |
| Fewco Contracts Ltd | Real estate | 2015 |
| Fewco Limited | Professional & scientific | 2015 |
| Fewco Management Limited | Professional & scientific | 2015 |
| Fewco Services LLP | | 2015 |
| Fewco Sports Ltd | Extraterritorial | 2015 |
| FFG Syndicate Limited | Education | 2023 |
| FG Invest Ltd | Real estate | 2021 |
| FG Windows & Doors Ltd | Wholesale & retail | 2015 |
| Fifth Element Building Ltd | Construction | 2021 |
| Figoni Paris Ltd | Manufacturing | 2018 |
| Filips Properties Limited | Real estate | 2013 |
| Fiona Wiseman Interior Design Ltd | Construction | 2020 |
| Fire Safeguard Ltd | Construction | 2019 |
| Firgrove Limited | Professional & scientific | 2010 |
| First Third Project Limited | Information & communication | 2014 |
| Fishguard Bridge Limited | Extraterritorial | 2003 |
| Fishguard Tunnel Limited | Extraterritorial | 2003 |
| Fitness 4 Schools Limited | Arts & recreation | 2013 |
| Five Demo Ltd | Construction | 2024 |
| Five Foot Productions Limited | Information & communication | 2023 |
| FJ1 Limited | Arts & recreation | 2024 |
| FLL Leads Limited | Professional & scientific | 2017 |
| Floodlight Business Limited | Professional & scientific | 2002 |
| Florian Ltd | Real estate | 2024 |
| Flow Consulting Group Limited | Professional & scientific | 2015 |
| FM Media Production Ltd | Information & communication | 2025 |
| FMG (Construction) Ltd | Construction | 2018 |
| FMG (Marylebone) Ltd | Construction | 2023 |
| FMG (Walton) Ltd | Construction | 2023 |
| Focal Business Solutions Limited | Manufacturing | 2018 |
| Folio Estates Ltd | Real estate | 2012 |
| Footmechanix Ltd | Health & social care | 2003 |
| FOR Ever Homes Restoration Ltd | Construction | 2021 |
| Forefront Sport Ltd | Wholesale & retail | 2021 |
| Forged in Frames Productions Ltd | Information & communication | 2026 |
| Fortifa Ltd | Administrative & support | 2025 |
| Forward Construction Group Ltd | Construction | 2025 |
| Forward Group (London) Ltd | Construction | 2024 |
| Forza Football UK Limited | Arts & recreation | 2024 |
| Four Contracting Ltd | Construction | 2023 |
| Four Investments Ltd | Financial services | 2025 |
| Four Maintenance Specialists Ltd | Construction | 2025 |
| Four S Advisory Limited | Professional & scientific | 2021 |
| Four Winds Park Management Company Limited | Real estate | 1998 |
| Fourteen Automotive Ltd | Administrative & support | 2025 |
| Fourteen Retail Ltd | Wholesale & retail | 2017 |
| FOURTEEN17 LLP | | 2012 |
| Fourth Dimension Interiors Ltd | Professional & scientific | 2019 |
| FOX Livings Ltd | Real estate | 2020 |
| Freelance Event Services Limited | Administrative & support | 2018 |
| Fresh Approach HR Ltd | Professional & scientific | 2009 |
| Fridgetek Limited | Manufacturing | 2002 |
| Frontier Land Holdings Limited | Financial services | 2024 |
| Fulcrum Change Consulting Ltd | Professional & scientific | 2024 |
| Fulfillment Partners Ltd | Transport & logistics | 2021 |
| Full Clear Media Limited | Information & communication | 2026 |
| Fully Completely Ltd | Professional & scientific | 2026 |
| Furlong Country Ltd | Wholesale & retail | 2023 |
| Furlong Ringwood Limited | Real estate | 2021 |
| Fusiongfx Limited | Information & communication | 2004 |
| Futureneer Invest Ltd | Real estate | 2019 |
| G&S Jarvis Investments Ltd | Construction | 2020 |
| G&T Event Consultants Limited | Arts & recreation | 2026 |
| G-Lite Limited | Arts & recreation | 2014 |
| G.R.F.Holdings Limited | Real estate | 1960 |
| G.T. Railton Limited | Health & social care | 2010 |
| Gable Residences Ltd | Real estate | 2020 |
| Gaia Real Estate Limited | Real estate | 2021 |
| Galleon Claygate Limited | Real estate | 1938 |
| Gammaxcellence Limited | Wholesale & retail | 2023 |
| Garden Design Collective Ltd | Professional & scientific | 2024 |
| Gavin's Design Studio Ltd | Professional & scientific | 2024 |
| GB Mmak Group Ltd | Real estate | 2018 |
| GCM Management Limited | Real estate | 2015 |
| GEH Groundworks Specialists Limited | Construction | 2007 |
| Gelo Consulting Ltd | Other services | 2024 |
| Gemma Norval Interiors Ltd | Professional & scientific | 2017 |
| General Renovations Limited | Construction | 2025 |
| Genesius Film Partners LLP | | 2011 |
| GEO. Kingsbury Holdings Limited | Professional & scientific | 1956 |
| GEO. Kingsbury Leasing Limited | Administrative & support | 1988 |
| GEO. Kingsbury Machine Tools Limited | Wholesale & retail | 1963 |
| GEO. Kingsbury Timber Limited | Professional & scientific | 1995 |