| Filiy Collections Ltd | Wholesale & retail | 2016 |
| Filli Cafe Limited | Other services | 2015 |
| Filli Limited | Other services | 2015 |
| FIN9NCE Limited | Professional & scientific | 2021 |
| Finance Fixtory Ltd | Education | 2024 |
| Finaxis Advisory and Consultancy Limited | Professional & scientific | 2026 |
| Finch Care Brighton Ltd | Health & social care | 2025 |
| Finch Care Ltd | Hospitality | 2022 |
| Findroompro Limited | Real estate | 2022 |
| Finedge Accounting Ltd | Professional & scientific | 2025 |
| Finessence Limited | Professional & scientific | 2021 |
| Finest Academy Ltd | Education | 2024 |
| Fingurus Ltd | Professional & scientific | 2025 |
| Finra Limited | Hospitality | 2025 |
| Fintech BPO Ltd | Administrative & support | 2022 |
| Finvis Limited | Professional & scientific | 2021 |
| FIO Global Ltd | Wholesale & retail | 2025 |
| Fiorella Shoes Limited | Wholesale & retail | 2000 |
| Firetech Pro Ltd | Construction | 2014 |
| First Choice Accomodations Ltd | Hospitality | 2022 |
| First Choice Cars Ltd | Wholesale & retail | 2015 |
| First Choice Consultants Ltd | Education | 2011 |
| First Choice J Ltd | Wholesale & retail | 2025 |
| First Choice Vehicle Management Ltd | Wholesale & retail | 2020 |
| First Choice Wholesale Limited | Wholesale & retail | 2023 |
| First Direction Ltd | Wholesale & retail | 2020 |
| First Glazing Solution Limited | Construction | 2023 |
| First Point Care Services Ltd | Health & social care | 2025 |
| First R Media Limited | Information & communication | 2021 |
| First Street UK Ltd | Real estate | 2023 |
| First-Stops Trading Ltd | Wholesale & retail | 2015 |
| Firstcall Personnel Limited | Administrative & support | 2015 |
| Firstcircleconcierge Ltd | Administrative & support | 2025 |
| Fiscal Bridge Services Limited | Professional & scientific | 2018 |
| Fitra Studios Limited | Information & communication | 2025 |
| Five Pillar Homes Ltd | Real estate | 2025 |
| Five Pillars Properties Limited | Real estate | 2019 |
| Five Star Rental Property Services Company Ltd | Real estate | 2024 |
| FIX & Go Services London Ltd | Other services | 2019 |
| Fiza & Co UK Limited | Wholesale & retail | 2015 |
| Fiza and Co London Limited | Hospitality | 2017 |
| FJA Property Holding Limited | Real estate | 2026 |
| FKB Consultancy Limited | Professional & scientific | 2022 |
| Flash Sale Offers Ltd | Wholesale & retail | 2026 |
| Flashhproperty Ltd | Real estate | 2024 |
| Flave Limited | Information & communication | 2020 |
| Flavors of Kerala Ltd | Hospitality | 2025 |
| Flavour Food and Beverage Ltd | Hospitality | 2022 |
| Flbm Sousa Sousyn Co Ltd | Wholesale & retail | 2026 |
| Fleary Enterprise Ltd | Health & social care | 2018 |
| Fleet Ranger Ltd | Information & communication | 2024 |
| Flex Finds Limited | Wholesale & retail | 2024 |
| Flexe RAY Limited | Wholesale & retail | 2024 |
| Flexfit Medical Ltd | Other services | 2024 |
| Flexi Motors Ltd | Wholesale & retail | 2020 |
| Flextrade Ecom Group Ltd | Wholesale & retail | 2026 |
| Flexytech Fitness Ltd | Wholesale & retail | 2025 |
| FLO Trifan Ltd | Administrative & support | 2025 |
| Floki Airport Parking Ltd | Transport & logistics | 2025 |
| Flora Wellness Ltd | Other services | 2021 |
| Florand Construction Ltd | Construction | 2018 |
| Flore Vault Ltd | Manufacturing | 2025 |
| Florence Leather UK Limited | Wholesale & retail | 2022 |
| Florence's Wardrobe Ltd | Wholesale & retail | 2022 |
| Florin Miron Trans Ltd | Transport & logistics | 2019 |
| Floringsaid Limited | Construction | 2025 |
| Floter AI Ltd | Information & communication | 2026 |
| Floter App Ltd | Information & communication | 2026 |
| Floter Ltd | Information & communication | 2026 |
| Flourich Ltd | Professional & scientific | 2018 |
| Flourishgate Care Services Ltd | Administrative & support | 2018 |
| Flourishgate Limited | Professional & scientific | 2010 |
| Flourishgate Living | Health & social care | 2018 |
| Fluff and Scruff Studio Ltd | Wholesale & retail | 2023 |
| Flux Furnish Ltd | Wholesale & retail | 2025 |
| FLY MZM Limited | Information & communication | 2017 |
| Flyinbird Travels Ltd | Administrative & support | 2024 |
| Flywheel Trucking Ltd | Transport & logistics | 2025 |
| FM Education Hub Ltd | Education | 2019 |
| FM Elite Services Ltd | Wholesale & retail | 2026 |
| FM UK Solutions Limited | Administrative & support | 2019 |
| Fm&Zm Ltd | Construction | 2022 |
| FM7 Limited | Manufacturing | 2024 |
| FNP 2026 Ltd | Professional & scientific | 2026 |
| FNZ Global Limited | Professional & scientific | 2025 |
| Focumeu Hair Ltd | Other services | 2013 |
| Fokuson Ltd | Wholesale & retail | 2021 |
| Follow the Crowd Ltd | Hospitality | 2025 |
| Follybee Ltd | Health & social care | 2018 |
| Foneage Ltd | Other services | 2017 |
| Foods Service Ltd | Wholesale & retail | 2025 |
| Fora Tuition Ltd | Education | 2025 |
| Forbes Fashion House Limited | Wholesale & retail | 2020 |
| Fordrole Limited | Real estate | 1989 |
| Forever Gifted Ltd | Wholesale & retail | 2026 |
| Foreverballingldn CIC | Education | 2025 |
| Forksy Nibbles Limited | Hospitality | 2026 |
| Fortune Careers Ltd | Education | 2020 |
| Fortune Trading Ltd | Wholesale & retail | 2025 |
| Fortune's Feathers Limited | Administrative & support | 2017 |