| Fasm Trading Co., Ltd | Wholesale & retail | 2024 |
| Fast Beckenham Ltd | Hospitality | 2023 |
| Fastone Limited | Extraterritorial | 2020 |
| FAT OX Beckenham Ltd | Wholesale & retail | 2019 |
| Favopharm Co., Limited | Manufacturing | 2024 |
| Fay&Ben Limited | Information & communication | 2021 |
| FC Invest Building Limited | Construction | 2023 |
| FCC ENG & Construction Co., Ltd | Extraterritorial | 2014 |
| FE Steel Trading Limited | Wholesale & retail | 2024 |
| Fearns Property Investments Limited | Real estate | 2014 |
| Featherstone Greenhithe Developments Limited | Construction | 2026 |
| Featherstone Group Holdings Southeast Limited | Construction | 2018 |
| Featherstone Homes (Southeast) Ltd | Construction | 2015 |
| Featherstone Homes Developments South East Ltd | Construction | 2017 |
| Featherstone Homes Peckham Management Company Limited | Construction | 2020 |
| Featherstone Homes SE25 Limited | Real estate | 2023 |
| Featherstone Homes Southfield Rentals Limited | Real estate | 2020 |
| Featherstone Homes Southfields Management Company Ltd | Real estate | 2020 |
| Featherstone Peckham Properties Limited | Construction | 2019 |
| Federal Reserve Limited | Energy | 2019 |
| Feellife Health.Uk Ltd | Extraterritorial | 2016 |
| Feeyous International Trading Co., Ltd | Wholesale & retail | 2019 |
| FEI LAI Feng Technology Co., Ltd | Professional & scientific | 2019 |
| Feihu Industry Limited | Wholesale & retail | 2016 |
| Feijoo Cleaning Services Ltd | Administrative & support | 2023 |
| Feisuo Technology Co., Ltd | Manufacturing | 2022 |
| Feiwen Kiss International Investment (UK) Co., Ltd. | Extraterritorial | 2019 |
| Felicis Technology Ltd | Wholesale & retail | 2025 |
| Felicity HAT Hire (London) Limited | Wholesale & retail | 2009 |
| Felicity James Care Services Ltd | Other services | 2025 |
| Felite Auto Parts Co., Ltd. | Extraterritorial | 2017 |
| Feng Ying International Commerce Ltd | Wholesale & retail | 2023 |
| Fengde IMP & EXP Co., Limited | Wholesale & retail | 2025 |
| Fenglin Trading Limited | Professional & scientific | 2016 |
| Fengxian Trade Ltd | Wholesale & retail | 2024 |
| Fenster Fit Ltd | Construction | 2023 |
| Fergus Parker Limited | Professional & scientific | 2018 |
| Fern Court Management Company Limited | Households | 1981 |
| Fesks Instruments Co., Limited | Manufacturing | 2021 |
| Feslunt Ltd | Extraterritorial | 2021 |
| Festi Beauty Limited | Other services | 2024 |
| FFC Holdings Group Ltd | Manufacturing | 2026 |
| Ffff Factory Ltd | Wholesale & retail | 2022 |
| FFG Limited | Real estate | 2026 |
| FH Industrial Co., Ltd | Professional & scientific | 2015 |
| Fiacom International Trading Co., Ltd | Extraterritorial | 2017 |
| Fiaj Investments Limited | Real estate | 2016 |
| Fiangco International Limited | Wholesale & retail | 2021 |
| Fiber Industry Limited | Manufacturing | 2022 |
| Fibersea Technology Co., Ltd | Manufacturing | 2023 |
| Fibre & Produce Trading Company Limited | Financial services | 1954 |
| Fiegy Capital Ltd | Professional & scientific | 2023 |
| Field International Building Materials Co., Ltd | Extraterritorial | 2024 |
| Fifth World Limited | Real estate | 2012 |
| Fig's Tree Ltd | Administrative & support | 2017 |
| FIGURE95 Ltd | Wholesale & retail | 2024 |
| Fill the Valley Ltd | Information & communication | 2021 |
| Fin-Dat Ltd | Professional & scientific | 2012 |
| Financial Change and Analytics Limited | Financial services | 2014 |
| Financial Philosophy Ltd | Professional & scientific | 2019 |
| Financial Solutions House Ltd | Other services | 2011 |
| Fincone Technology Ltd | Information & communication | 2026 |
| Find Balance Ltd | Professional & scientific | 2024 |
| Finder V16 Solution Limited | Wholesale & retail | 2024 |
| Finding Way Co., Limited | Wholesale & retail | 2014 |
| Fine Edge Carpentry Limited | Construction | 2025 |
| Fine Matubayshi Shipping Co., Limited | Manufacturing | 2022 |
| Finkel Productions Limited | Information & communication | 2012 |
| Finland Aikesidi Agriculture Group Ltd | Extraterritorial | 2020 |
| Finland Baalif Crop Nutrition Europe Co., Ltd | Extraterritorial | 2021 |
| Finland Fengdi Interantional BIO Ltd | Extraterritorial | 2020 |
| Finland Huangma Chemical Industry Group Ltd | Extraterritorial | 2024 |
| Finland Muming International Fertilizer Manufacturing Ltd | Extraterritorial | 2024 |
| Finland Wode Group Ltd | Extraterritorial | 2020 |
| Firebolt Games Limited | Information & communication | 2016 |
| Firefly Labs Development Ltd | Information & communication | 2024 |
| Firemonkey Investment Limited | Real estate | 2022 |
| Firsd International Co., Ltd | Extraterritorial | 2014 |
| First BMS Parts Ltd | Wholesale & retail | 2017 |
| First Export Services Limited | Wholesale & retail | 2022 |
| First Gipsy Hill Management Company (London) Limited | Households | 1962 |
| First Import and Export Services Limited | Wholesale & retail | 2022 |
| First Merx Parts Limited | Wholesale & retail | 2018 |
| Firstsing Ltd | Extraterritorial | 2023 |
| Fishers and Daughters Ltd | Financial services | 2020 |
| Fishers Food Ltd | Hospitality | 2007 |
| Fishiburke Group Limited | Manufacturing | 2025 |
| Fit 2 Trip Limited | Financial services | 2014 |
| Fit Precision Mold Co., Ltd | Extraterritorial | 2007 |
| Fitch Jean Trading Co., Ltd | Manufacturing | 2024 |
| Fitnfix Ltd | Construction | 2019 |
| Fiton Industry Company Limited | Extraterritorial | 2018 |
| Fitsall Industrial Co., Ltd | Extraterritorial | 2023 |
| Fitxfly Limited | Arts & recreation | 2024 |
| Fitzgerald Painting & Decorating Limited | Construction | 2022 |
| Five Oakwood Flat Maintenance (Beckenham) Limited | Households | 1992 |
| Five Point Recruitment Ltd | Administrative & support | 2021 |
| Fixte Limited | Administrative & support | 2020 |
| Fizz Industry Co., Ltd | Wholesale & retail | 2017 |
| FJ Packaging Company Limited | Manufacturing | 2013 |