| Fairdeal Autos Ltd | Wholesale & retail | 2026 |
| Fairjoint & Co Accountants UK Ltd | Professional & scientific | 2011 |
| Faisal R M Bashir Ltd | Wholesale & retail | 2018 |
| Faith and Co Estates Ltd | Real estate | 2018 |
| Faithex Ltd | Wholesale & retail | 2026 |
| Faiz Foundation UK CIC | Administrative & support | 2025 |
| Faiz Photography Limited | Professional & scientific | 2025 |
| Faizaan Motors Ltd | Other services | 2005 |
| Falcon Construction Services Ltd | Construction | 2024 |
| Faleiro Commerce Ltd | Wholesale & retail | 2025 |
| Falk Associates Ltd | Real estate | 2023 |
| Family First Care Serene Ltd | Health & social care | 2021 |
| Famms MNH Gadgets Solution Ltd | Wholesale & retail | 2025 |
| Fancy Zari Limited | Wholesale & retail | 2013 |
| Faniani Coaches Limited | Transport & logistics | 2026 |
| Fanz Group Limited | Wholesale & retail | 2024 |
| Farah Beauty Products (UK) Limited | Wholesale & retail | 2022 |
| Faraz a Khan Locum Ltd | Health & social care | 2019 |
| Faraz Razi Medical Ltd | Health & social care | 2019 |
| Farc Ltd | Wholesale & retail | 2025 |
| Farhan Corporation Limited | Wholesale & retail | 2017 |
| Faringdon Universal Store Ltd | Wholesale & retail | 2022 |
| Farm Cafe Hanworth Limited | Hospitality | 2018 |
| Farm PCO Cars Ltd | Administrative & support | 2025 |
| Farmers Fruit & Vegetables Ltd | Wholesale & retail | 2024 |
| Farnborough Food & Wine Limited | Wholesale & retail | 2015 |
| Farro Janno Ltd | Wholesale & retail | 2024 |
| Farside Digital Limited | Information & communication | 2026 |
| Fashup AI Ltd | Information & communication | 2025 |
| Fast and Safe Courier Limited | Transport & logistics | 2016 |
| Fast Secure Limited | Information & communication | 2019 |
| Fast System PTE UK Ltd | Real estate | 2024 |
| Fast Track Repairs Ltd | Wholesale & retail | 2025 |
| Fast Way Track Ltd | Extraterritorial | 2024 |
| Fast&Shine Ltd | Administrative & support | 2014 |
| Fastline Foods Ltd | Wholesale & retail | 2023 |
| Fastline Goods Distribution Ltd | Wholesale & retail | 2024 |
| Fastrack Wholesale Limited | Manufacturing | 2020 |
| FAT JO Ltd | Wholesale & retail | 2021 |
| Fateh Management Consultancy Ltd | Professional & scientific | 2014 |
| Fatehjeet & Harsimran Investments Ltd | Real estate | 2025 |
| Fathe Builders Ltd | Construction | 2019 |
| Fathers First CIC | Professional & scientific | 2026 |
| Fatima Al-Zahra Limited | Wholesale & retail | 2025 |
| Fawaz Homecare Limited | Health & social care | 2020 |
| Fazaal Limited | Construction | 2026 |
| Fb-H Limited | Hospitality | 2023 |
| FCM Trans Ltd | Transport & logistics | 2019 |
| FCP Management and Consulting Ltd | Real estate | 2019 |
| Fdeg Ltd | Administrative & support | 2024 |
| FDN Media Cooperation Ltd | Administrative & support | 2013 |
| FEE PAY Ltd | Administrative & support | 2025 |
| Feediee Ltd | Hospitality | 2026 |
| Fegalo Ltd | Hospitality | 2025 |
| Felcourt Properties Limited | Real estate | 2001 |
| Felix Home Investments Limited | Real estate | 2025 |
| Feltham Consultancy Services (UK) Limited | Administrative & support | 2003 |
| Feltham Grocery Supermarket Ltd | Wholesale & retail | 2020 |
| Femplete Ltd | Wholesale & retail | 2021 |
| FENCEMASTERS804 Ltd | Administrative & support | 2025 |
| Fenrir Enterprises Limited | Administrative & support | 2024 |
| Feri Limited | Transport & logistics | 2015 |
| Fern Way Properties Ltd | Real estate | 2022 |
| Fernandes Bikes Ltd | Wholesale & retail | 2025 |
| Fernandes Holdings Ltd | Wholesale & retail | 2025 |
| Fernandes Software Consulting Ltd | Information & communication | 2021 |
| Fernandos Property Ltd | Real estate | 2024 |
| Ferns Brothers Ltd | Administrative & support | 2023 |
| Fernstech Solutions Limited | Professional & scientific | 2025 |
| Fernwood Formations Ltd | Wholesale & retail | 1999 |
| Ferrao Recruiting Limited | Administrative & support | 2026 |
| Fezbourne Ltd | Real estate | 2025 |
| Ffsco Ltd | Wholesale & retail | 2025 |
| FGC Exchange Ltd | Financial services | 2016 |
| FGC Travel Ltd | Administrative & support | 2019 |
| Fgora Services Ltd | Wholesale & retail | 2025 |
| FGP Topco Limited | Professional & scientific | 2006 |
| FH Global Trade Ltd | Wholesale & retail | 2025 |
| FHM Supported Accommodation Ltd | Health & social care | 2025 |
| FHX Limited | Administrative & support | 2014 |
| FIA Trans Ltd | Transport & logistics | 2025 |
| Ficsil Ltd | Construction | 2025 |
| FID Holding Limited | Financial services | 2021 |
| Field Tricks Limited | Wholesale & retail | 2025 |
| Fieldside Management Limited | Households | 1990 |
| Fiery Tiger Limited | Transport & logistics | 2015 |
| Fifth Avenue Investments Limited | Construction | 2009 |
| Fifth Essence Property Limited | Real estate | 2019 |
| Fifth Property Holdings Ltd | Real estate | 2019 |
| Fifty One Investments Ltd. | Real estate | 2018 |
| Fiji Consultancy Ltd | Professional & scientific | 2019 |
| Film Bond Ltd | Information & communication | 2004 |
| FIN Investments and Assets Ltd | Administrative & support | 2017 |
| Final Bosss Ltd | Wholesale & retail | 2025 |
| Finance Health Group Ltd | Financial services | 2017 |
| Finbeez Limited | Financial services | 2025 |
| Finchley Wines Ltd | Wholesale & retail | 2026 |
| Fincott Ltd | Financial services | 2017 |
| Find a Business International Ltd | Real estate | 2015 |
| Findinstruct Ltd | Information & communication | 2024 |