| Fervent Ecoclear and Logistics Ltd | Transport & logistics | 2026 |
| Ffma (Trading) Limited | Real estate | 2008 |
| Fieldpoint Ltd | Education | 2025 |
| Fill Your Face Aesthetics Ltd | Other services | 2009 |
| Filmtailor AI Ltd | Information & communication | 2024 |
| Filthynrich Ltd | Manufacturing | 2023 |
| Final Word Studios Limited | Professional & scientific | 2023 |
| Financedox Ltd | Administrative & support | 2010 |
| Fineline Plumbing & GAS Ltd | Construction | 2024 |
| Fire Technology International Limited | Construction | 2007 |
| First AID and Safety Solutions Ltd | Health & social care | 2019 |
| First Priority Marine Ltd | Agriculture & fishing | 2024 |
| First Steps Fostering Ltd | Health & social care | 2022 |
| Firstforcosy Limited | Extraterritorial | 2021 |
| Fish & Chips Kent Ltd | Hospitality | 2024 |
| Fish FRY Records Limited | Arts & recreation | 2018 |
| Fit Girl Factory Limited | Other services | 2013 |
| Fitzies Ltd | Information & communication | 2022 |
| Five Beatty Road Stoke Newington Limited | Real estate | 2004 |
| Five Sisters Limited | Arts & recreation | 2012 |
| Five Star Elite Properties Limited | Financial services | 2025 |
| FIVE10 Freeholds Ltd | Real estate | 2024 |
| FIVE10TWELVE Limited | Information & communication | 2013 |
| Fledgelings Nursery School Limited | Administrative & support | 2002 |
| Flexpublisher Limited | Information & communication | 2025 |
| Flipperoo Ltd | Wholesale & retail | 2025 |
| Floor 13B Rotory Services Ltd | Wholesale & retail | 2020 |
| Floral Creation Gifts Ltd | Wholesale & retail | 2020 |
| Florence Nightingale House Management Company Limited | Households | 2020 |
| Flourish Training Limited | Administrative & support | 2013 |
| Flourishing World Academy Ltd | Wholesale & retail | 2025 |
| Flowshot Ltd | Information & communication | 2022 |
| Fluellen Limited | Wholesale & retail | 2025 |
| Focused Approach Ltd | Administrative & support | 2017 |
| Following Whispers Family Service Consultancy Limited | Health & social care | 2004 |
| Foord Enterprises Ltd | Other services | 2022 |
| FOR the Kids Ltd | Health & social care | 2024 |
| FOR YOU Cleaning Service Ltd | Other services | 2020 |
| Ford Synthesis Limited | Other services | 2021 |
| Foreland Heights Management Limited | Households | 2019 |
| Forever Built Ltd | Construction | 2024 |
| Forever Vigilant Ltd | Administrative & support | 2026 |
| Forever Young Advanced Aesthetics Limited | Other services | 2025 |
| Formation Scaffolding Solutions Ltd | Construction | 2016 |
| Forsyth Clark Productions Ltd | Arts & recreation | 2022 |
| Fortis Civil Engineering Ltd | Professional & scientific | 2024 |
| Fortis Transport Planning Limited | Professional & scientific | 2025 |
| Fortune Port Limited | Construction | 2021 |
| Forward MI SEH Ltd | Wholesale & retail | 2023 |
| Foster Properties and Rentals Limited | Real estate | 2015 |
| Four AS (Leasehold Management) Limited | Households | 2010 |
| Fourth Wall Folkestone CIC | Arts & recreation | 2022 |
| FOX Estate Planning Ltd | Administrative & support | 2026 |
| Foxdrop Ventures Limited | Information & communication | 2015 |
| Fracturedempire Ltd | Manufacturing | 2025 |
| Francis Mcclellan Limited | Information & communication | 2022 |
| Frank DO Little Ltd | Information & communication | 2019 |
| Frankly Entertaining Ltd | Wholesale & retail | 2022 |
| Freed Accountancy Ltd | Professional & scientific | 2025 |
| Freemans Roadside Assistance Ltd | Wholesale & retail | 2025 |
| Frenchie Investments and Consultancy Limited | Professional & scientific | 2020 |
| Frenchie Properties Limited | Real estate | 2019 |
| Friends of Brook Green | Arts & recreation | 2010 |
| Friends of Ellington Park Café Limited | Hospitality | 2019 |
| Frontline Electronics Ltd | Manufacturing | 2008 |
| Fruits DE MER Limited | Extraterritorial | 2020 |
| Fruits DE MER Wholesale Limited | Wholesale & retail | 2021 |
| Fruituk Limited | Wholesale & retail | 2023 |
| Frye & Norris Limited | Information & communication | 2016 |
| Ftmvr Global Ltd | Wholesale & retail | 2026 |
| FU YU Tasty House Ltd | Hospitality | 2021 |
| Fuel Studio Limited | Information & communication | 2015 |
| Fuel Ventures Limited | Administrative & support | 2013 |
| Fuel Ventures VC Ltd | Administrative & support | 2024 |
| Full of Game Ltd | Manufacturing | 2019 |
| Fungtion Ltd | Manufacturing | 2022 |
| Fusarium Ltd | Construction | 2022 |
| Fusion Sound Limited | Information & communication | 2026 |
| Future Homes Residential Contracting Ltd | Construction | 2023 |
| Future Lioness South East Limited | Arts & recreation | 2025 |
| Future Science Medical Consulting Limited | Wholesale & retail | 2015 |
| Fynemore Silver Ltd | Manufacturing | 2016 |
| G & a OFF Licence Ltd | Wholesale & retail | 2017 |
| G & L Environmental Ltd | Water & waste | 2011 |
| G & R Interiors Ltd | Construction | 2017 |
| G & W Gardner Building Contractors Ltd | Construction | 1999 |
| G & W Gardner Construction Limited | Construction | 2011 |
| G E Bowra Group Limited | Real estate | 1960 |
| G&R Groundworks (South East) Ltd. | Administrative & support | 2017 |
| G. Marks Limited | Professional & scientific | 2016 |
| Gaff Solutions Limited | Transport & logistics | 2018 |
| Gaia Global Ltd | Administrative & support | 2023 |
| Gallery Walk (Kent) Limited | Real estate | 2025 |
| Galley View Management Company Limited | Households | 2014 |
| Galloway Electrical Contractors Limited | Construction | 2003 |
| Gambrill and Partners Limited | Professional & scientific | 2017 |
| Ganesh Estate Ltd | Real estate | 2023 |
| Gannet Stick Ltd | Hospitality | 2025 |
| Gappstack Limited | Information & communication | 2017 |
| Garaj Ltd | Wholesale & retail | 2021 |