| Eyezel Ltd | Wholesale & retail | 2023 |
| EYS Consultancy Limited | Information & communication | 2010 |
| Eyviva Therapeutics Ltd | Professional & scientific | 2024 |
| EZ Pick Limited | Wholesale & retail | 2025 |
| Ezaa Enterprises Ltd | Hospitality | 2025 |
| EZO Property Ltd | Real estate | 2026 |
| F & B Luxury Car Hire Limited | Financial services | 2019 |
| F B Leadwork Ltd | Construction | 2023 |
| F C Contracting Ltd | Construction | 2021 |
| F J Joinery Limited | Manufacturing | 2004 |
| F&F South East Limited | Construction | 2020 |
| F&S Property Developers Ltd | Construction | 2021 |
| F.J Garrott Ltd Ltd | Transport & logistics | 2019 |
| F4L Friends for Life UK CIC | Education | 2025 |
| FAB Health & Fitness Clubs Limited | Health & social care | 2023 |
| FAB Short Stays Limited | Hospitality | 2018 |
| FAB1 Limited | Health & social care | 2024 |
| Fabr Engineering Ltd | Professional & scientific | 2013 |
| Fabricon (UK) Limited | Extraterritorial | 2014 |
| Fabrx Limited | Administrative & support | 2014 |
| Fabulous Children Clothing Ltd | Wholesale & retail | 2019 |
| Faby Transport Group Ltd | Transport & logistics | 2021 |
| Fact London Rocks Productions Ltd | Arts & recreation | 2022 |
| Fahim Properties Ltd | Real estate | 2021 |
| Fair Spark Books Ltd | Information & communication | 2018 |
| Fairacre Freehold Ltd | Households | 2022 |
| Fairacre Management (Ashford) Limited | Real estate | 2009 |
| Fairbridge Investment Holdings Limited | Financial services | 2024 |
| Fairfax Meadow Europe Limited | Manufacturing | 2003 |
| Fairfax Meadow Limited | Professional & scientific | 2018 |
| Fairfield Meat and Poultry Ltd | Wholesale & retail | 2022 |
| Fairhaven Property Limited | Real estate | 2021 |
| Fairlight Contractors Limited | Construction | 2026 |
| Fairlight Surgical Limited | Health & social care | 2023 |
| Fairlight Transport Ltd | Transport & logistics | 2019 |
| Fairview Healthcare Ltd | Health & social care | 2023 |
| Fairview Industrial Estate Management Co Limited | Real estate | 2000 |
| Fairway Air Ltd | Energy | 2022 |
| Fairway Investigation and Associates Limited | Administrative & support | 2018 |
| Fairways Garages Ltd | Wholesale & retail | 2004 |
| Faithful Enterprises Group Ltd | Financial services | 2024 |
| Faithful Software Solutions Ltd | Information & communication | 2025 |
| Falcon FX Ltd | Education | 2017 |
| Falkor Limited | Information & communication | 2022 |
| Falkor Operations Limited | Administrative & support | 2022 |
| Fall Hill Ltd | Construction | 2019 |
| Fall Stop. Limited | Health & social care | 2026 |
| Fallons IT Ltd | Information & communication | 2017 |
| Falltide Press Limited | Extraterritorial | 2025 |
| Falqoni Design Ltd | Professional & scientific | 2016 |
| Falqoni Trade Ltd | Wholesale & retail | 2020 |
| Fambh Limited | Extraterritorial | 2021 |
| Family Forward CIC | Administrative & support | 2024 |
| Family Law Kent Ltd | Professional & scientific | 2017 |
| Family Seed Here to Help YOU Grow Ltd | Health & social care | 2021 |
| Family Tarrant Ltd | Arts & recreation | 2024 |
| Fandja Consulting Ltd | Professional & scientific | 2024 |
| FAR East Consultants Limited | Professional & scientific | 2025 |
| Fard Industries Limited | Real estate | 2000 |
| Farm and General Services Limited | Extraterritorial | 2005 |
| Farmatex Ltd | Health & social care | 2014 |
| Farmscan AG Limited | Information & communication | 2015 |
| Farmworld Hydraulics Limited | Professional & scientific | 2017 |
| Farringdon PUB Limited | Hospitality | 2015 |
| Farthing Common Plant Centre Limited | Wholesale & retail | 1999 |
| Faseha Healthcare Recruitment Ltd | Administrative & support | 2017 |
| Faseha Property Limited | Real estate | 2020 |
| Fash Property Limited | Real estate | 2023 |
| Fashion Nation Limited | Administrative & support | 2008 |
| Fassin Sales UK Limited | Wholesale & retail | 2019 |
| Fast Call Roofing Limited | Construction | 2025 |
| Fast FIX Plumbers Limited | Construction | 2026 |
| Fast Road Conversions Ltd | Wholesale & retail | 2009 |
| Fast-Track Flooring (South) Ltd | Construction | 2016 |
| Fatboyfire Ltd | Administrative & support | 2026 |
| Fauchon Ltd | Professional & scientific | 2009 |
| Faulkner Plant Services Limited | Wholesale & retail | 2004 |
| Faulkner Ventures Limited | Real estate | 2019 |
| Fauna Wellness Limited | Other services | 2025 |
| Faux Brickwork Ltd | Wholesale & retail | 2013 |
| Faversham Car Wash Ltd | Wholesale & retail | 2025 |
| Fawmc Ltd | Real estate | 2020 |
| Fawnfields Limited | Financial services | 2003 |
| Fayzia Consultant Ltd | Wholesale & retail | 2023 |
| FBR Property Holdings Limited | Real estate | 2025 |
| FBR Solutions Ltd | Professional & scientific | 2018 |
| FC Catering Kent Ltd | Hospitality | 2025 |
| FC Digital Limited | Information & communication | 2017 |
| FC Management Enterprises Ltd | Professional & scientific | 2019 |
| Fcfg Services Ltd | Construction | 2026 |
| FDA Medical Limited | Health & social care | 2025 |
| Federico Beauty Limited | Other services | 2012 |
| Feel Flows Ltd | Construction | 2023 |
| Feel Home Lettings PVT Ltd | Real estate | 2020 |
| Feel Warm Plumbing Limited | Construction | 2016 |
| Fefe Productions Ltd | Information & communication | 2025 |
| Feist Property Developments Ltd | Real estate | 2002 |
| Fejzo Limited | Construction | 2023 |
| Fekxir Ltd | Information & communication | 2024 |
| Felix Racing Bloodstock Ltd | Arts & recreation | 2026 |