| Featherstone Corner Ltd | Wholesale & retail | 2024 |
| Featherstone Court (Southall) RTM Company Limited | Real estate | 2023 |
| Featherstone Sports Centre Trust | Education | 2018 |
| Federico Marcon Consulting Ltd | Professional & scientific | 2015 |
| Feel Good Constructions Ltd | Construction | 2024 |
| Feild Ltd | Construction | 2025 |
| Feltham Lahori Karahi Ltd | Hospitality | 2024 |
| Femferoza Ltd | Wholesale & retail | 2023 |
| Fenix Management Services Ltd | Wholesale & retail | 2026 |
| Fento Limited | Hospitality | 2018 |
| Ferndale Ventures Limited | Real estate | 2003 |
| Ferns Events Ltd | Hospitality | 2025 |
| Ferns Petals Ltd | Wholesale & retail | 2025 |
| Fernwood Capital Ltd | Construction | 2026 |
| Feroza Ltd | Wholesale & retail | 2018 |
| Fetchyfy Limited | Wholesale & retail | 2025 |
| Fibre Care Essex Limited | Other services | 2018 |
| Fibre Care Services Limited | Other services | 2017 |
| File, Admin & Recruit Ltd | Administrative & support | 2023 |
| Fill Places Ltd | Administrative & support | 2026 |
| Find My Trials Ltd | Professional & scientific | 2020 |
| Findbestremovals Ltd | Transport & logistics | 2024 |
| Fine Goods Grocery Ltd | Wholesale & retail | 2026 |
| Fine Property(Uk) Ltd | Real estate | 2016 |
| Fine Real Estate Ltd | Real estate | 2020 |
| Fine Touch (LDN) Limited | Wholesale & retail | 2015 |
| Fine Wine Kentish Town Ltd | Wholesale & retail | 2025 |
| Fine Wine Regents Park Ltd | Wholesale & retail | 2025 |
| Fine Workforce Ltd | Professional & scientific | 2018 |
| Finergreen (UK) Limited | Professional & scientific | 2023 |
| Finetec Construction Ltd | Construction | 2025 |
| Finger of GOD Enterprise - (Minah Security Services) Ltd. | Administrative & support | 2016 |
| Finqo Ltd | Information & communication | 2026 |
| Fintech Nathan Group Ltd | Extraterritorial | 2023 |
| Fiona Collection UK Ltd | Wholesale & retail | 2024 |
| Fire Door Solution Group Ltd | Public administration | 2025 |
| Fire Pizza Ltd | Hospitality | 2020 |
| First Choice London Limited | Real estate | 2017 |
| First Choice Roofing&Guttering Limited | Construction | 2024 |
| First Class Property and Lettings Investors Ltd | Real estate | 2025 |
| First Class Roofing & Building Services Ltd | Construction | 2021 |
| First Connection Recruitment Ltd | Transport & logistics | 2013 |
| First Deal Ltd | Real estate | 2023 |
| First FLY Logistic Limited | Transport & logistics | 2025 |
| First Glass London Limited | Manufacturing | 2019 |
| First Impact Limited | Arts & recreation | 2018 |
| First Step Foundation Limited | Education | 2012 |
| First Stop Publishing Ltd | Information & communication | 2013 |
| First Work Ltd | Manufacturing | 2026 |
| Firstline Transport Ltd | Transport & logistics | 2026 |
| Fishkeb & Pappus Limited | Hospitality | 2025 |
| Fit Life London Ltd | Other services | 2024 |
| Fitness AI Ltd | Other services | 2025 |
| Fitness Next Level Limited | Administrative & support | 2026 |
| Fitpipe UK Ltd | Manufacturing | 2010 |
| Five Pillars Recruitment Ltd | Administrative & support | 2020 |
| Five River Entertainment Limited | Arts & recreation | 2018 |
| Five Star Property Support Limited | Construction | 2026 |
| Five Stars Local Ltd | Wholesale & retail | 2014 |
| Fixbuildit Limited | Construction | 2024 |
| Fixpro Ltd | Administrative & support | 2019 |
| Fixway Strategy LAB Limited | Professional & scientific | 2025 |
| Fizzy UK Limited | Wholesale & retail | 2021 |
| FJTRADERS123 Ltd | Wholesale & retail | 2024 |
| FKA Synergy Limited | Professional & scientific | 2012 |
| Flag Football CIC | Arts & recreation | 2024 |
| Flair & Flame Ltd | Manufacturing | 2025 |
| Flair AI Limited | Information & communication | 2024 |
| Flame GAS & Heating Services Ltd | Construction | 2026 |
| Flashpoint Invest Ltd | Real estate | 2023 |
| Flexible FIX Ltd | Construction | 2022 |
| Flovita Ltd | Wholesale & retail | 2025 |
| Flowerphul CIC | Wholesale & retail | 2025 |
| Flowteck Ltd | Construction | 2016 |
| FLY Easily Travel Ltd | Administrative & support | 2024 |
| FLY Mate Ltd | Administrative & support | 2023 |
| Flyershub Limited | Administrative & support | 2023 |
| FM24 Rental Properties Limited | Real estate | 2024 |
| FMT Transport Private Ltd | Wholesale & retail | 2025 |
| FMY Limited | Health & social care | 2016 |
| Focus Multi Services Ltd | Energy | 2021 |
| Folkestone Ltd | Real estate | 2025 |
| Fon-Ex PVT Ltd | Wholesale & retail | 2025 |
| Fone Baze UK Ltd | Information & communication | 2017 |
| Fone Select Accessories Ltd | Wholesale & retail | 2009 |
| Fone Select Ltd | Wholesale & retail | 2003 |
| Fone Select Repair Centre Ltd | Wholesale & retail | 2019 |
| Fone World Kingston Ltd | Wholesale & retail | 2024 |
| Fonelab Ltd | Information & communication | 2017 |
| Fontana Estates Limited | Real estate | 1997 |
| Food Glorious Food Community Interest Company | Education | 2025 |
| Food Southall Ltd | Hospitality | 2025 |
| Food Tech Hub Limited | Information & communication | 2025 |
| Foodapp Trading Ltd | Wholesale & retail | 2019 |
| Foodhub London Ltd | Wholesale & retail | 2025 |
| Footsupplier Ltd | Wholesale & retail | 2024 |
| Force Contractors Ltd | Construction | 2015 |
| Ford Street Developments Ltd | Construction | 2018 |
| Forever Dreaming Properties Ltd | Real estate | 2019 |
| Forever Dreaming Properties Trading Ltd | Real estate | 2019 |