| FLS INS Services Ltd | Financial services | 2005 |
| FLS Tenant Referencing Services Ltd | Financial services | 2002 |
| Flyakite Property Ltd | Real estate | 2025 |
| Flying Colours Kent Limited | Wholesale & retail | 2019 |
| Flying FAT Sheep Design Ltd | Wholesale & retail | 2020 |
| Flying FAT Sheep Toys and Games Ltd | Manufacturing | 2020 |
| Flying FAT Sheep Trading Co. Ltd | Wholesale & retail | 2018 |
| Flying Monkey Limited | Professional & scientific | 2020 |
| Flying Tiger LLP | | 2019 |
| Flying Tiger Member Ltd | Professional & scientific | 2019 |
| FNR RTM Company Limited | Households | 2023 |
| Fntc CIC | Information & communication | 2025 |
| FNX Commercial Properties Limited | Financial services | 2021 |
| FNX Holdings Limited | Financial services | 2021 |
| Focal Point Media Ltd | Information & communication | 2026 |
| Folkel Point Limited | Real estate | 2025 |
| FOLKES1 Limited | Real estate | 2024 |
| Folly Farm Gardens (Residents) Management Company Ltd | Households | 2017 |
| Food & Wine Events Limited | Wholesale & retail | 2016 |
| Food Citi Ltd | Administrative & support | 2019 |
| Food IS Care CIC | Professional & scientific | 2024 |
| Food Master Trading Limited | Hospitality | 2022 |
| Foodari Limited | Wholesale & retail | 2007 |
| Footpath Cottages Limited | Real estate | 2021 |
| Footsure South Eastern Limited | Financial services | 1980 |
| Forager Limited | Wholesale & retail | 2005 |
| Fordwich Property Investment Limited | Real estate | 2026 |
| Foreland Services Limited | Education | 2025 |
| Foresite MSP Limited | Information & communication | 2015 |
| Forest Moss Limited | Real estate | 2025 |
| Foreverod Properties Ltd | Real estate | 2016 |
| Forge House Canterbury Limited | Households | 2008 |
| Formula Global Ltd | Financial services | 2021 |
| Formula Space Ltd | Wholesale & retail | 2021 |
| Fort Lane Group Ltd | Wholesale & retail | 2011 |
| Fortitude Wealth Management Limited | Education | 2018 |
| Four Elders Ltd | Hospitality | 2022 |
| Four Fathoms Limited | Information & communication | 2024 |
| Four Oaks Bossingham Limited | Households | 2023 |
| Four Paws Adventures Ltd | Agriculture & fishing | 2025 |
| Fourth Estate Alliance Ltd | Information & communication | 2017 |
| Fourth Layer Ltd | Information & communication | 2025 |
| Fourtune Healthcare Services Limited | Administrative & support | 2021 |
| Fowis UK Ltd | Wholesale & retail | 2021 |
| FOX Commercial Services Ltd | Construction | 2026 |
| FOX Projects London Limited | Professional & scientific | 2013 |
| Foxhill Farming Co Limited | Agriculture & fishing | 2017 |
| Foxhill Stables Limited | Agriculture & fishing | 2014 |
| Foxi Ltd | Manufacturing | 2021 |
| Fragile Fight Limited | Arts & recreation | 2017 |
| Francis Evans Kent Limited | Real estate | 2024 |
| Fraser Tillyard Limited | Other services | 2008 |
| Frau Kapow Limited | Professional & scientific | 2025 |
| Frebon Limited | Wholesale & retail | 2020 |
| Freedom Pass Limited | Financial services | 2025 |
| French and Westcott Ltd | Manufacturing | 2021 |
| French and Westcott Properties Ltd | Real estate | 2022 |
| Fresh Cleaning Canterbury Ltd | Administrative & support | 2023 |
| Fresh People Ltd | Administrative & support | 2022 |
| Fresh Produce Warehouse Limited | Hospitality | 2025 |
| Fresh Start Counselling Limited | Health & social care | 2019 |
| Fresh Start Direct Limited | Education | 2018 |
| Fresh Start for Kids Limited | Education | 2014 |
| Fresh Start Group of Companies Ltd | Other services | 2019 |
| Fresh Start in Education Limited | Education | 2010 |
| Fresh Start International Limited | Extraterritorial | 2015 |
| Fresh Start Management Services Limited | Other services | 2012 |
| Fresh Start Support Services Limited | Education | 2018 |
| Fresh Voice Projects Ltd. | Construction | 2017 |
| Freshcold Limited | Manufacturing | 2010 |
| Frge Ltd | Wholesale & retail | 2026 |
| Friend+Friend Limited | Professional & scientific | 2021 |
| Friendly Seed Company Limited | Wholesale & retail | 2020 |
| Fringe and Ginge Ltd | Hospitality | 2019 |
| Frisa Property Management Limited | Real estate | 2025 |
| Fritèlo Ltd | Hospitality | 2026 |
| Frlg Invest Ltd | Real estate | 2025 |
| Fruit Salad Ltd | Real estate | 2022 |
| Fruitbowl Media Limited | Professional & scientific | 2011 |
| Fruition PO Limited | Wholesale & retail | 1998 |
| FSB Biopharma Consulting Ltd | Professional & scientific | 2020 |
| Fsie Holdings Limited | Financial services | 2024 |
| FST Developments Limited | Real estate | 2008 |
| Fudstone Developments Ltd | Construction | 2023 |
| Fulcrum Business Strategies Ltd | Construction | 2018 |
| Fulserve Ltd | Construction | 2019 |
| Function KIT Ltd | Information & communication | 2019 |
| Funnell Electrical Services Ltd | Construction | 2019 |
| FUR Real Pets Ltd | Wholesale & retail | 2026 |
| Furley Page Limited Liability Partnership | | 2006 |
| Furry Friends Ltd | Other services | 2025 |
| Fuse Universal Limited | Education | 2008 |
| Fusion Dining Group Ltd | Hospitality | 2019 |
| Fusion Farms Limited | Construction | 2025 |
| Future Fight Foundation CIC | Education | 2025 |
| Future Food Forests CIC | Education | 2021 |
| Futureactuary Ltd | Education | 2025 |
| Futuresphere Labs Limited | Information & communication | 2025 |
| FW Document Storage Limited | Administrative & support | 2007 |
| FWM Construction Limited | Financial services | 2026 |