| F&B Adult Training Centre Ltd | Wholesale & retail | 2017 |
| Fabric and Ledger Ltd | Information & communication | 2026 |
| Fabric Construction Limited | Construction | 2022 |
| Fabulous Tea Limited | Manufacturing | 2024 |
| Facelifts Maintenance Ltd | Construction | 2014 |
| Fair Blocks Ltd | Real estate | 2025 |
| Fairlight Property Solutions Limited | Extraterritorial | 2019 |
| Fairlight UN Limited | Health & social care | 2014 |
| Falshaw Ltd | Administrative & support | 2024 |
| Farley Plumbing and Heating Ltd | Construction | 2023 |
| Faron Home Improvements Ltd | Construction | 2021 |
| Farrago Footwear Limited | Manufacturing | 2022 |
| Farringdon House Financial Services Limited | Financial services | 2025 |
| Fashion on the High Street Ltd. | Administrative & support | 2018 |
| Fast & Clean Hand Car Wash Ltd | Administrative & support | 2025 |
| Fast and Happy Street Food Ltd | Transport & logistics | 2020 |
| Fast and Rare Ltd | Wholesale & retail | 2016 |
| Faversham House Holdings Limited | Professional & scientific | 2010 |
| Faversham House Limited | Information & communication | 1961 |
| Fbggl ADS Ltd | Wholesale & retail | 2024 |
| FC Operations Limited | Administrative & support | 2013 |
| FCC Operations Ltd | Administrative & support | 2016 |
| Fehris Ltd | Information & communication | 2025 |
| Felbridge Communications Limited | Real estate | 1988 |
| Felbridge Court Owners Association Limited | Administrative & support | 1965 |
| Felbridge Electrical Services Limited | Construction | 2018 |
| Felbridge Green LLP | | 2017 |
| Felcourt Management Limited | Real estate | 2008 |
| Fender Musical Instruments Europe Limited | Manufacturing | 1995 |
| Fenners Chambers Management Company Limited | Administrative & support | 2023 |
| Fibre Management Limited | Construction | 2008 |
| Filipino British Nurses Extra Care East Grinstead Ltd | Health & social care | 2013 |
| Film Art International Ltd | Information & communication | 2025 |
| Final Version Limited | Information & communication | 2008 |
| Financial Strategic Management SRH Ltd | Financial services | 2024 |
| Finch & Francis Ltd | Wholesale & retail | 2019 |
| Finch Garden Machinery Service Ltd | Manufacturing | 2021 |
| Find Your Private JET and Findur Cars Limited | Transport & logistics | 2016 |
| Finley Consulting Limited | Professional & scientific | 2013 |
| Finnpower Limited | Professional & scientific | 1996 |
| Fireball Digital Media Ltd | Information & communication | 2022 |
| Firebolt Studios Ltd | Information & communication | 2022 |
| Firefly Property Services Ltd | Real estate | 2016 |
| Fisher Recycling Ltd | Water & waste | 2018 |
| Fitness Coach Freedom Ltd | Education | 2019 |
| Fitted Furniture & Joinery Limited | Construction | 2003 |
| Fitzroy Camden Management Limited | Real estate | 2004 |
| Five Marketing Solutions Limited | Professional & scientific | 2010 |
| FIX ALL & More Ltd | Wholesale & retail | 2021 |
| Fixxa Limited | Construction | 2018 |
| FL Equity Management Ltd | Financial services | 2017 |
| Flagship Estate Planners Limited | Professional & scientific | 2005 |
| Flagship Financial Consultants Limited | Financial services | 2001 |
| Flamingo Lane Limited | Administrative & support | 2022 |
| Flexi Cleans Ltd | Administrative & support | 2022 |
| Florence Organics Ltd | Wholesale & retail | 2018 |
| Floris Creations Ltd | Administrative & support | 2016 |
| Flossi Limited | Wholesale & retail | 2025 |
| Flowermac of New Covent Garden Ltd | Wholesale & retail | 2013 |
| FLY to YOU Ltd | Hospitality | 2026 |
| Focus Arts and Media Education CIC | Education | 2025 |
| Focus Film School Limited | Education | 2017 |
| Footjoy Limited | Extraterritorial | 2010 |
| FOR EVA Films Limited | Information & communication | 2025 |
| Forbairt Properties Ltd | Construction | 2023 |
| Forest ROW Golden Grill Ltd | Hospitality | 2021 |
| Forge SA Properties Limited | Real estate | 2025 |
| Fort Domestic Building Limited | Construction | 2017 |
| Fortis Dynamics Ltd | Professional & scientific | 2026 |
| FORTY12 Limited | Professional & scientific | 2024 |
| Fotolab Ltd | Manufacturing | 2001 |
| Fountain Court Chambers Limited | Extraterritorial | 1989 |
| Fountain Court Limited | Extraterritorial | 1989 |
| FOX & Sage Ltd | Professional & scientific | 2026 |
| FOX Recruitment UK Limited | Administrative & support | 2005 |
| FOX Scaffold Design Limited | Construction | 2017 |
| FPA Marketing Ltd | Professional & scientific | 2005 |
| FPR Acquisitions Limited | Wholesale & retail | 2025 |
| Fpro Electrical Services Ltd | Construction | 2011 |
| Fractured Mountain Limited | Information & communication | 2016 |
| Franklin Team Ltd | Construction | 2018 |
| Free Natural Life International Limited | Health & social care | 1999 |
| Freedom Forever Investment Group Ltd | Professional & scientific | 2026 |
| Freedom Xpress Global Ltd | Administrative & support | 2018 |
| Freelove Angt Ltd | Wholesale & retail | 2024 |
| Fresh Start Limited | Construction | 2007 |
| Friends of ST Bernard Limited | Health & social care | 2025 |
| Frosts Investments Limited | Real estate | 2020 |
| FU2U Ltd | Wholesale & retail | 2026 |
| Fuel Fixer Ltd | Professional & scientific | 2013 |
| Fuel Fixer Properties Ltd | Real estate | 2022 |
| Fulmar Leisure Limited | Professional & scientific | 2021 |
| Furkindness Ltd | Wholesale & retail | 2026 |
| Furnace Wood Road Fund Association Limited | Other services | 2006 |
| Furniture Crates Ltd | Manufacturing | 2022 |
| Fxclusive Trading Academy Ltd | Education | 2025 |
| G & G Food Supplies Limited | Manufacturing | 1987 |
| G & T Property Rentals Ltd | Households | 2026 |
| G M Garage Doors Limited | Manufacturing | 2001 |
| G S Drug Development Sciences Ltd | Professional & scientific | 2018 |