| Faery Blue Limited | Information & communication | 2012 |
| Fair Employment Training (FET) Ltd | Professional & scientific | 2008 |
| Fairbank Lettings Ltd | Real estate | 2019 |
| Fairbett Estates Limited | Construction | 2024 |
| Fairbrook Grove Management Company Limited | Households | 2020 |
| Fairbrook Properties Ltd | Real estate | 2024 |
| Fairfox Ltd | Professional & scientific | 2022 |
| Fairmont Advisory Limited | Professional & scientific | 2022 |
| Fairview Farm Agricultural Services Limited | Agriculture & fishing | 2015 |
| Fairview Gardens (Sturry) Management Company Limited | Hospitality | 2004 |
| Fairview Holdings (Kent) Limited | Real estate | 2017 |
| Family Investment (Four) Limited | Households | 1994 |
| Family Tree Limited | Hospitality | 2014 |
| Famyne Limited | Information & communication | 2018 |
| FAN Art Ltd | Information & communication | 2025 |
| Fang Massage and Beauty Ltd | Other services | 2025 |
| Farah Consultancy UK Ltd | Professional & scientific | 2026 |
| FARE24 Ltd | Information & communication | 2024 |
| Farhan Bari Limited | Health & social care | 2016 |
| Farleigh Heights Management Company Limited | Real estate | 2016 |
| Farm Repair Services Ltd | Manufacturing | 2026 |
| FARMG8 Ltd | Agriculture & fishing | 2024 |
| Farmile Group Limited | Financial services | 2024 |
| Farmile Investments Limited | Real estate | 2022 |
| Farrer Barnes Limited | Administrative & support | 1995 |
| Farrington Mews (Bridge) Management Company Limited | Households | 2019 |
| Fast and Furios Ltd | Transport & logistics | 2024 |
| FAY & Daughters Property Limited | Real estate | 2022 |
| Fays Foods Ltd | Hospitality | 2023 |
| Fcls RM 19 Limited | Other services | 2021 |
| Fcls RM 20 Limited | Other services | 2021 |
| Fcls RM 21 Limited | Other services | 2021 |
| Feather&Stone Solutions Limited | Wholesale & retail | 2026 |
| Feelix Consulting Ltd | Professional & scientific | 2017 |
| Feline Ltd | Wholesale & retail | 2018 |
| Felix Solis Avantis UK Ltd | Wholesale & retail | 2013 |
| Felks Holdings Limited | Professional & scientific | 1998 |
| Fella Limited | Other services | 2014 |
| Feminine Balance Ltd | Health & social care | 2022 |
| Fengjuan’ Company Ltd | Health & social care | 2022 |
| Ferndale Residential Ltd | Real estate | 2016 |
| Ferry Services Limited | Hospitality | 2026 |
| Fete Vision Limited | Hospitality | 2024 |
| Fides Box and Pack Limited | Wholesale & retail | 2024 |
| Fierro's Wine&Food Ltd | Wholesale & retail | 2024 |
| Fikson Limited | Administrative & support | 2023 |
| Filip & DAD Electrical Solutions Ltd | Construction | 2026 |
| Fillers Limited | Administrative & support | 2009 |
| Film Education Limited | Education | 2017 |
| Finally Group Limited | Financial services | 2022 |
| Financial Investigations Limited | Financial services | 2013 |
| Fineview Landscapes Limited | Administrative & support | 1997 |
| Finhill Studio Ltd | Information & communication | 2026 |
| Finn's (1865) Ltd | Real estate | 1996 |
| Finnian’S Ltd | Wholesale & retail | 2025 |
| Fire Lily Studio Ltd | Information & communication | 2025 |
| Fire Protection Online Limited | Wholesale & retail | 2004 |
| Fire Security Services Limited | Public administration | 2003 |
| Fireaway Canterbury Ltd | Hospitality | 2020 |
| Firelens Ltd | Information & communication | 2022 |
| Fireway Ltd | Hospitality | 2023 |
| First Letting Services Ltd | Administrative & support | 2023 |
| First Stop Letting Ltd | Real estate | 2024 |
| First Thought (Equine) Limited | Manufacturing | 1996 |
| First Thought (Holdings) Limited | Manufacturing | 1996 |
| Fish Advisory Ltd | Administrative & support | 2026 |
| Fish and Chips Direct Limited | Hospitality | 2019 |
| Fish Castle Ltd | Hospitality | 2025 |
| Fisher Court Management Company Limited | Households | 2007 |
| Fisk-Welch Reach Services Limited | Professional & scientific | 2008 |
| Fittall Designs Ltd | Professional & scientific | 2020 |
| Fitter & Harding Limited | Real estate | 2014 |
| Fitton Care Consultants Limited | Administrative & support | 2024 |
| Fitzgerald Jewellers Limited | Wholesale & retail | 2014 |
| FIX East Village Ltd | Health & social care | 2016 |
| FJ Fine Trade Limited | Wholesale & retail | 2025 |
| FJB Rail Engineering Ltd | Construction | 2023 |
| Fjslandscaping Ltd | Administrative & support | 2025 |
| Flare 7 Limited | Information & communication | 2012 |
| Flat Roofing (South East) Limited | Construction | 2017 |
| Flawless Cleaning Services Kent Ltd | Administrative & support | 2018 |
| Fleming Dental Limited | Health & social care | 2018 |
| Fleming Medical Practices Limited | Extraterritorial | 2018 |
| Flex Physiotherapy Limited | Health & social care | 2017 |
| Flexaura Home Physio UK Ltd | Health & social care | 2026 |
| Flexilocker Ltd | Wholesale & retail | 2018 |
| Flexq Limited | Information & communication | 2022 |
| Flightlight Limited | Administrative & support | 2026 |
| Flint Bespoke Properties Limited | Construction | 2019 |
| Flipfinity Innovations Limited | Energy | 2014 |
| Flipflash Learning Ltd | Education | 2025 |
| Floc Brewing Ltd | Manufacturing | 2019 |
| Flock&Canvas Ltd | Professional & scientific | 2023 |
| Florence Properties Limited | Real estate | 2002 |
| Flourishing Olive Limited | Wholesale & retail | 2025 |
| Flourishuk Ltd | Professional & scientific | 2019 |
| Flow Osteopathy Ltd | Health & social care | 2025 |
| Flow Ride School Runs Ltd | Transport & logistics | 2026 |
| Flowers by EG Limited | Wholesale & retail | 2022 |
| FLR Leisure Limited | Administrative & support | 2025 |