| Faye Sawyer (Stylist) Limited | Arts & recreation | 2007 |
| FBF Roofing Ltd | Construction | 2025 |
| Fbot Consulting Ltd | Professional & scientific | 2023 |
| Fcal Investment Limited | Financial services | 2024 |
| FCC Pavitt Ltd | Construction | 2021 |
| Fcrc Investment Limited | Households | 2026 |
| FDA Drylining Ltd | Construction | 2024 |
| Fddd Construction Ltd | Construction | 2023 |
| FDE Security Ltd | Information & communication | 2019 |
| FDM Foods Limited | Wholesale & retail | 2023 |
| Featherbrows Artistry Academy Limited | Other services | 2021 |
| Feature Finishes Limited | Construction | 2025 |
| Fedyk Trade Ltd | Construction | 2015 |
| FEE BEE DEE Ltd | Professional & scientific | 2009 |
| Feel Safe Training Ltd | Education | 2023 |
| Feel the Surf Ltd | Manufacturing | 2025 |
| Fehu Group Ltd | Construction | 2007 |
| Fela and Friends Ltd | Manufacturing | 2020 |
| Feline Traders Limited | Construction | 2010 |
| Felix Joinery Ltd | Construction | 2018 |
| Fell & Scar Limited | Administrative & support | 2020 |
| Fematec Care Support Service Ltd | Health & social care | 2015 |
| Fembuk Associates Limited | Professional & scientific | 2010 |
| Femi Esan Global Outreach Ltd | Education | 2019 |
| Femisy Ltd | Information & communication | 2022 |
| Fendowed Ltd | Other services | 2025 |
| Fengfood Ltd | Wholesale & retail | 2023 |
| Fenholme Limited | Real estate | 2009 |
| Fenny-Global Services Ltd | Mining & quarrying | 2019 |
| Fenton Sports Ltd | Wholesale & retail | 2012 |
| Fenton Way Developments Limited | Real estate | 2022 |
| Fernfield Limited | Professional & scientific | 1999 |
| Fernmode Limited | Construction | 1980 |
| Feroza Deluxe Ltd | Wholesale & retail | 2024 |
| Ferro Electronics Ltd | Wholesale & retail | 2025 |
| Fest Builders Ltd | Construction | 2009 |
| Festim Property Ltd | Real estate | 2024 |
| Festme Consultants Ltd | Professional & scientific | 2015 |
| Fetoda Building Services Limited | Construction | 2020 |
| FEZ LC Limited | Administrative & support | 2020 |
| FEZ Motors Limited | Wholesale & retail | 2019 |
| FEZ Properties Ltd | Real estate | 2022 |
| FFL Logistics Limited | Information & communication | 2024 |
| FFW Recruitment Services Ltd | Administrative & support | 2023 |
| FH Consultancy Ltd | Wholesale & retail | 2025 |
| FHA Enterprise Ltd | Wholesale & retail | 2025 |
| FIA Private Hire Ltd | Transport & logistics | 2025 |
| Fibo Services Limited | Construction | 2024 |
| Fidepraxis Limited | Professional & scientific | 2026 |
| Fides Contractors Ltd | Construction | 2024 |
| Fides Homes Limited | Construction | 2014 |
| Field Contracts Limited | Construction | 2000 |
| Field Decorating Services Limited | Extraterritorial | 2004 |
| Field Projects Limited | Extraterritorial | 2009 |
| Fieldwhite Services Ltd | Construction | 2009 |
| Fiem Accountancy & Management Services Limited | Professional & scientific | 2013 |
| Fierce Wellness Ltd | Other services | 2024 |
| Fifth Avenue Cars Limited | Wholesale & retail | 2013 |
| Fifth Southfleet Maintenance Limited | Households | 1963 |
| Fifty Property Solutions Limited | Real estate | 2021 |
| Fifty Technical Solutions Limited | Professional & scientific | 2015 |
| Filipi Groundwork Ltd | Construction | 2017 |
| Filipino Oriental Mart, Ltd | Wholesale & retail | 2019 |
| Fillo Workforce Limited | Information & communication | 2025 |
| Film Crew Limited | Transport & logistics | 2020 |
| Film Electric Limited | Information & communication | 2014 |
| Films for ALL CIC | Information & communication | 2016 |
| Finaccel Solutions Limited | Financial services | 2024 |
| Finachron Limited | Information & communication | 2011 |
| Final Checks Makeup and Hair Academy Ltd | Other services | 2018 |
| Final Goal Transport Ltd | Transport & logistics | 2013 |
| Final Logistics Ltd | Other services | 2025 |
| Finance Pro Ltd | Other services | 2022 |
| Finbow Properties Limited | Real estate | 2015 |
| Fincentral Limited | Professional & scientific | 2025 |
| Finch Property Management Ltd | Households | 2021 |
| Finco Advisors Limited | Professional & scientific | 2019 |
| Fincon Travel Ltd | Transport & logistics | 2026 |
| Find My DPP Ltd | Health & social care | 2024 |
| Findlay Electrical Limited | Energy | 2017 |
| Findmynextstay Ltd | Real estate | 2023 |
| Fine Home Construction Limited | Construction | 2021 |
| Fine Joinery Ltd | Manufacturing | 2024 |
| Fine Lines Aesthetics by Laura Ltd | Health & social care | 2023 |
| Fine Lofts Construction Ltd | Construction | 2016 |
| Fine Tailoring Ltd | Manufacturing | 2015 |
| Finesse Property Services Limited | Construction | 2014 |
| Finest Construction Ltd | Construction | 2016 |
| Finfirst Solutions Limited | Information & communication | 2017 |
| Finopsys Solutions Ltd | Information & communication | 2021 |
| Finsbury Software Ltd | Information & communication | 2020 |
| Fintax Pro Ltd | Transport & logistics | 2026 |
| Fintech Capital Consulting Ltd | Professional & scientific | 2019 |
| Finthesis Ltd | Information & communication | 2020 |
| Fintract Global Limited | Information & communication | 2025 |
| Finvest Solutions Limited | Professional & scientific | 2023 |
| Fire Compartments Ltd | Professional & scientific | 2018 |
| Fire Protec Sprinkler Systems Limited | Construction | 2020 |
| Fire Safety Check Limited | Other services | 2023 |
| Firestop Protection & Building Maintenance Ltd | Administrative & support | 2008 |