| Farah Khan Ltd | Health & social care | 2018 |
| Faringdon Solutions Limited | Administrative & support | 2011 |
| Farn Step Limited | Manufacturing | 2023 |
| Farnfields LLP | | 2013 |
| Farrell Estates Ltd | Real estate | 2024 |
| Farrow Browne and Gryspeerdt Ltd | Other services | 2015 |
| FAS Industries Limited | Wholesale & retail | 2020 |
| Fashevents&Hire Ltd. | Hospitality | 2017 |
| Fast Fashion FF Limited | Wholesale & retail | 2025 |
| Fast Marine Services Limited | Transport & logistics | 2024 |
| Fast UK Traders Ltd | Wholesale & retail | 2017 |
| Fasten Auto Parts Industries Ltd | Wholesale & retail | 2021 |
| Fastening Solutions Limited | Wholesale & retail | 2000 |
| FAT Sams Ice Creams Ltd | Wholesale & retail | 2014 |
| Fateh Limited | Manufacturing | 2024 |
| Fateh Transport Ltd | Transport & logistics | 2023 |
| Favorite Rainham Ltd | Hospitality | 2019 |
| Favour Thirty Four Ltd | Construction | 2023 |
| Favprop Limited | Real estate | 1983 |
| Faysfitclub Ltd | Arts & recreation | 2025 |
| FBA Faye Ltd | Wholesale & retail | 2025 |
| FBS Flash Bang Smoke Ltd | Manufacturing | 2020 |
| Fcss LLP | | 2017 |
| FD Drivers Ltd | Administrative & support | 2017 |
| FD Proje UK Ltd | Manufacturing | 2019 |
| Fear Brand UK Limited | Wholesale & retail | 2017 |
| Featurekey Properties Limited | Real estate | 1997 |
| Fees Global Ltd | Other services | 2023 |
| Fekadu Solutions Limited | Administrative & support | 2012 |
| Feltham Furniture Limited | Manufacturing | 2022 |
| Femico Limited | Construction | 2025 |
| Fendasox Limited | Extraterritorial | 2008 |
| Ferndown Mortgage Services Ltd | Financial services | 2024 |
| Fesquad Limited | Transport & logistics | 2019 |
| Fest Support Services Ltd | Other services | 2018 |
| Festiship Ltd | Transport & logistics | 2025 |
| Fetoj Limited | Information & communication | 2021 |
| Fhinnies Ltd | Health & social care | 2023 |
| Fibby Enterprises Limited | Wholesale & retail | 2019 |
| Fibre One Communications Ltd | Information & communication | 2022 |
| Fida Brides Ltd | Manufacturing | 2019 |
| Field of Dreams Kent Ltd | Hospitality | 2025 |
| Fifum Limited | Information & communication | 2017 |
| Filters Direct Ltd | Wholesale & retail | 2020 |
| Fims (Fire Information Management Systems) Limited | Information & communication | 2022 |
| Final EE Focused Intensives Ltd | Education | 2020 |
| Finberry Construction Limited | Construction | 2021 |
| Finberry Group Limited | Financial services | 2021 |
| Finberry Holdings Limited | Real estate | 2019 |
| Finberry Homes Limited | Construction | 2021 |
| Finch Close Limited | Construction | 2024 |
| Finchall Investments Ltd | Real estate | 2024 |
| Finchy Lifts Limited | Professional & scientific | 2019 |
| Fine Medical Supply Limited | Extraterritorial | 2016 |
| Fine Times Ltd | Wholesale & retail | 2024 |
| Finechemie Company Limited | Wholesale & retail | 2018 |
| Finepoint English Ltd | Professional & scientific | 2024 |
| Finer Investments Limited | Real estate | 2016 |
| Finer Personnel Limited | Administrative & support | 2019 |
| Finlo Frank Estates Ltd | Real estate | 2022 |
| Fire and Security Holdings Limited | Financial services | 2019 |
| Fireball Consultancy Ltd | Information & communication | 2016 |
| Fireball Residential Ltd | Real estate | 2019 |
| First Call Medway Ltd | Construction | 2022 |
| First Class Brickwork and Maintenance Limited | Construction | 2015 |
| First Class Brickwork Ltd | Construction | 2015 |
| First GAS and Renewable Energy Ltd | Construction | 2020 |
| First Glass Exterior Cleaning Ltd | Other services | 2017 |
| Fitoutview Ltd | Construction | 2023 |
| Five Automotive Limited | Information & communication | 2024 |
| Five. Architects Ltd | Professional & scientific | 2022 |
| Fiveways Engineering and Consulting Limited | Construction | 2016 |
| Fixed Abode Garage Doors Ltd | Construction | 2017 |
| Flames Forged Limited | Wholesale & retail | 2025 |
| Flavour Hub Foods & Events Ltd | Manufacturing | 2025 |
| Fleet Solutions (South) Ltd | Professional & scientific | 2017 |
| Flexible Thinkers Ltd | Education | 2023 |
| Flexiwaste Environmental Services Ltd | Construction | 2012 |
| FLO PAY Ltd | Information & communication | 2025 |
| Floangel Ltd | Wholesale & retail | 2025 |
| Flomari Company Limited | Health & social care | 2019 |
| Flooring and Fabrics Make a Home Ltd | Wholesale & retail | 2020 |
| Floral Fabrications Limited | Manufacturing | 2022 |
| Flow Business Support Limited | Administrative & support | 2023 |
| Flownetix Mechanical Services Ltd | Construction | 2021 |
| FLP Facade Fire Safety Consultants Limited | Professional & scientific | 2020 |
| Flush Drainage Limited | Water & waste | 2023 |
| Fluxwin Enterpirse Company Ltd | Wholesale & retail | 2018 |
| FLY Beetles Ltd | Transport & logistics | 2025 |
| FLY Hope Ltd | Transport & logistics | 2023 |
| FMF Courier Ltd | Transport & logistics | 2021 |
| FMR Accountancy Limited | Professional & scientific | 1993 |
| Folk Cottages Limited | Real estate | 2022 |
| Folkard & Sons Software Ltd | Information & communication | 2021 |
| Folly Farm Estates Ltd | Construction | 2023 |
| Food of the Vine Ltd | Manufacturing | 2025 |
| Food Oriental Ltd | Hospitality | 2026 |
| Food to Go for Delivery Limited | Hospitality | 2025 |
| Foodie Love Limited | Hospitality | 2024 |
| Footcare Clinic Limited | Health & social care | 2007 |