| Ezigbo Healthcare Limited | Wholesale & retail | 2025 |
| F & S Capital Investments Ltd | Real estate | 2025 |
| F M T Construction Limited | Construction | 2005 |
| F.Resh Haircare Ltd | Other services | 2012 |
| Fairoak Platinum Developments Ltd | Construction | 2010 |
| Falcon (EM) Limited | Wholesale & retail | 2013 |
| Falcon Cash & Carry Limited | Manufacturing | 2012 |
| Falcon Online Limited | Wholesale & retail | 2019 |
| Family Office Tax Services Limited | Professional & scientific | 2020 |
| Fanboxxed Ltd | Wholesale & retail | 2022 |
| Fanfactory Club Ltd | Wholesale & retail | 2025 |
| Faraday Building Services Limited | Construction | 1998 |
| Farcol Ltd | Information & communication | 2011 |
| Fast Flow Drainage Limited | Construction | 2019 |
| Fayacc Ltd | Administrative & support | 2021 |
| Fedrigoni Real Estate Services Limited | Real estate | 2025 |
| Felix B Business Services Ltd | Transport & logistics | 2016 |
| Feminique Limited | Wholesale & retail | 2025 |
| FF Property Solutions Ltd | Construction | 2024 |
| FF Solutions Ltd | Construction | 2017 |
| Fiesta Productions Limited | Information & communication | 2021 |
| Film Dental Ltd | Information & communication | 2019 |
| Financial Tips Ltd | Professional & scientific | 2018 |
| Finley RAY Investments Ltd | Real estate | 2022 |
| Finnbert Ltd | Hospitality | 2022 |
| Finnella Limited | Financial services | 2023 |
| Finprop Limited | Financial services | 2022 |
| Firebex Ltd | Professional & scientific | 2024 |
| Firm Ground Limited | Construction | 2007 |
| Firmkill Ltd | Agriculture & fishing | 2025 |
| First Attempt Ltd | Information & communication | 2025 |
| First Elite Construction Limited | Construction | 2016 |
| First Fork Ltd | Hospitality | 2024 |
| First Form Building and Glazing Limited | Construction | 2006 |
| First Step Psychology ASD Limited | Education | 2019 |
| First Step Psychology Limited | Health & social care | 2015 |
| Fish Great Limited | Information & communication | 2026 |
| Fit World Company UK Ltd | Health & social care | 2021 |
| FIX Fleet Ltd | Construction | 2026 |
| Fixation Video Limited | Information & communication | 2009 |
| FJE Electrical Contractors Ltd | Construction | 2025 |
| Flamelock Limited | Manufacturing | 2025 |
| Floliz Limited | Real estate | 2024 |
| Flowscope Ltd | Construction | 2023 |
| Flowscope Maintenance Limited | Construction | 2024 |
| Flowstate AI Ltd | Information & communication | 2025 |
| Flux Electrical Services Ltd | Construction | 2019 |
| Fly-Bry Limited | Health & social care | 2024 |
| FMA Mechanical & Electrical Services Limited | Construction | 2018 |
| Focus Stream Ltd | Professional & scientific | 2025 |
| Fogg Joinery Limited | Construction | 2004 |
| Foot Felony Ltd | Wholesale & retail | 2023 |
| Forbes Holdings Ltd | Real estate | 2017 |
| Forbes Strategic Consulting Ltd | Real estate | 2016 |
| Form & Frame Carpentry Ltd | Construction | 2026 |
| Forum Communications Limited | Professional & scientific | 2025 |
| Foundation Building Services Limited | Construction | 2022 |
| Four Keys Properties Limited | Real estate | 2000 |
| Frances Norman Ltd | Professional & scientific | 2014 |
| Frankandco Ltd | Professional & scientific | 2013 |
| Free Rabbit. Ltd | Information & communication | 2023 |
| Freedom Games Ltd | Information & communication | 2019 |
| Freedom Life Ltd | Wholesale & retail | 2015 |
| Freedomvisory Ltd | Professional & scientific | 2026 |
| Freeflow Plumbing Services Ltd | Construction | 1998 |
| FREEFLOW26 Limited | Construction | 2026 |
| Freehold 100 Lewisham Way Limited | Real estate | 2019 |
| Fresen Cooling Services Limited | Professional & scientific | 2024 |
| Fresh Perspective Installations Ltd | Construction | 2010 |
| Friday Street Films Limited | Information & communication | 2014 |
| Friendship Bar & Restaurant Ltd | Hospitality | 2020 |
| Frometrend Limited | Real estate | 1984 |
| Front Group Limited | Administrative & support | 2022 |
| Fryerns Cellar Ltd | Wholesale & retail | 2012 |
| FSG Solutions Ltd | Wholesale & retail | 2020 |
| FSJ Media Ltd | Wholesale & retail | 2025 |
| Fsmatters Limited | Professional & scientific | 2008 |
| Full Circle Property Management Limited | Real estate | 2023 |
| FUR Babies Spa and Resort Ltd | Other services | 2019 |
| Furnihub Ltd | Professional & scientific | 2024 |
| Fusion Partitions Ltd | Construction | 2010 |
| Fusion Security Integration Ltd | Administrative & support | 2011 |
| G & H Properties (London) Ltd. | Real estate | 2011 |
| G & S Sharpe Limited | Real estate | 1994 |
| G and H Safeguarding Reviews Limited | Other services | 2024 |
| G J S Event Services Ltd | Information & communication | 2014 |
| G P T V Ltd | Information & communication | 2011 |
| G R Plumbing & Heating Ltd | Construction | 2016 |
| G. J. Gardens Ltd | Administrative & support | 2015 |
| G.J.H. Interiors Limited | Construction | 2007 |
| G.Sloan Construction Ltd | Construction | 2025 |
| G4 Invests Ltd | Real estate | 2016 |
| Gafj Care Limited | Health & social care | 2018 |
| Gafj Property Limited | Real estate | 2024 |
| Gaia + Grind Limited | Hospitality | 2025 |
| Gaia Holistic Healing Group LLP | | 2026 |
| Gaia Holistic Healing Ltd | Other services | 2026 |
| Gaia Studio Design Limited | Manufacturing | 2024 |
| Galaxie Overseas Limited | Wholesale & retail | 2013 |
| Galaxy Star Ltd | Hospitality | 2025 |