| Fairmile Fencing Limited | Manufacturing | 1964 |
| Fairmont Building Solutions Ltd | Construction | 2025 |
| Fairmont Housing Ltd | Hospitality | 2026 |
| Fairmont Painters Ltd | Other services | 2019 |
| Fairmont Properties Limited | Other services | 2014 |
| Fairmont Property Group Ltd | Real estate | 2026 |
| Fairmont Services Ltd | Administrative & support | 2023 |
| Fairmore Heating & Industrial Services Limited | | 1978 |
| Fairmount Capital Limited | Construction | 2018 |
| Fairplay Industries Ltd | Manufacturing | 2026 |
| Fairshop Ltd | Wholesale & retail | 2025 |
| Fairtax Accounting Limited | Professional & scientific | 2013 |
| Fairtax Solutions Limited | Professional & scientific | 2019 |
| Fairtrade Property Services Ltd | Real estate | 2019 |
| Fairuz Cafe & Lounge Ltd | Hospitality | 2024 |
| Fairvalue Motors Ltd | Wholesale & retail | 2026 |
| Fairview Hodge Hill Common Ltd | Real estate | 2013 |
| Fairview Hook Line & Fryer Ltd | Hospitality | 2024 |
| Fairway Financial Planning Limited | Financial services | 2010 |
| Fairway Lawns Management Company Limited | Real estate | 2019 |
| Fairway Mortgages Ltd | Professional & scientific | 2019 |
| Fairway View (Solihull) Management Company Limited | Real estate | 2018 |
| Fairwayandfork Ltd | Hospitality | 2026 |
| Fairy Dust Consulting Limited | Professional & scientific | 2010 |
| Fairyland Property Limited | Real estate | 2020 |
| Fairytale Parties Ltd | Arts & recreation | 2026 |
| Fairytales Nursery Ltd | Education | 2010 |
| Fais Properties Ltd | Real estate | 2024 |
| Faisal Jewellers Ltd | Wholesale & retail | 2013 |
| Faisal Mini Market Limited | Wholesale & retail | 2025 |
| Faisal Removals Ltd | Administrative & support | 2024 |
| Faisal's Holdings Ltd | Financial services | 2025 |
| Faisalr Ltd | Other services | 2019 |
| Faisals Ecomm GC Limited | Wholesale & retail | 2025 |
| Faisana Limited | Wholesale & retail | 2014 |
| Faisel's Care Ltd | Health & social care | 2023 |
| Faisu Ltd | Wholesale & retail | 2026 |
| Faith & Hope Ltd | Health & social care | 2020 |
| Faith and Confidence Business Agency Limited | Arts & recreation | 1968 |
| Faith Brynels Insights CIC | Professional & scientific | 2024 |
| Faith Care Haven 365 Ltd | Health & social care | 2025 |
| Faith Hospitality Recruitment Limited | Other services | 2019 |
| Faith Housing Ltd | Real estate | 2024 |
| Faith in Ltd. | Transport & logistics | 2017 |
| Faith in Motion Limited | Education | 2026 |
| Faith Security Ltd | Administrative & support | 2025 |
| Faith Supplements Ltd | Wholesale & retail | 2024 |
| Faith Transportation Ltd | Transport & logistics | 2025 |
| Faithbook London Limited | Information & communication | 2025 |
| Faithful Trading Ltd | Wholesale & retail | 2024 |
| Faithg Limited | Public administration | 2025 |
| Faithstone Property Group Ltd | Real estate | 2026 |
| Faiz Automotive Ltd | Wholesale & retail | 2024 |
| Faiz Commodities Ltd | Wholesale & retail | 2025 |
| Faiz CW7 Limited | Hospitality | 2025 |
| Faiz M Investments Ltd | Real estate | 2024 |
| Faiz Miah Ltd | Hospitality | 2025 |
| Faiz Miah Takeaway Services Ltd | Hospitality | 2025 |
| Faiz Shah Begum Welfare Foundation | Health & social care | 2019 |
| FAIZAAN582855 Ltd | Transport & logistics | 2025 |
| Faizan Global Trading Ltd | Wholesale & retail | 2026 |
| Faizan-E-Mujaddid | Education | 2017 |
| Faizan-E-Raza | Professional & scientific | 2011 |
| FAIZAN147 Ltd | Transport & logistics | 2025 |
| Faizi Fashion Ltd | Wholesale & retail | 2013 |
| Faizul Islam Masjid Limited | Education | 2007 |
| FAJ Rentals Ltd | Hospitality | 2025 |
| Fajr Face Masks Ltd | Wholesale & retail | 2024 |
| Fajr Flights & Tours Ltd | Administrative & support | 2021 |
| FAK Consultants T/A KBA Service Centre Limited | Manufacturing | 2024 |
| Fake News Ltd | Construction | 2025 |
| Fakhamat AL Yemen Ltd | Wholesale & retail | 2026 |
| Faki & Choco Limited | Real estate | 2020 |
| Fakir Halal Donners Ltd | Manufacturing | 2020 |
| Falak Fashions Birmingham Limited | Wholesale & retail | 2017 |
| Falaq RX Ltd | Health & social care | 2025 |
| Falasteen on Film CIC | Information & communication | 2024 |
| Falcao Limited | Administrative & support | 2020 |
| Falcata Ltd | Professional & scientific | 2024 |
| Falco Solutions Ltd | Information & communication | 2023 |
| Falcon Accountants Ltd | Professional & scientific | 2015 |
| Falcon Capitals Group Ltd | Wholesale & retail | 2025 |
| Falcon Care Services Ltd | Hospitality | 2023 |
| Falcon Carers Limited | Health & social care | 2013 |
| Falcon Commerce Ltd | Wholesale & retail | 2026 |
| Falcon Engineering Productions Limited | Manufacturing | 1987 |
| Falcon Gate Services Ltd | Administrative & support | 2025 |
| Falcon Key Holding Ltd | Real estate | 2025 |
| Falcon Nimrah Ltd | Real estate | 2026 |
| Falcon Services Corporation Limited | Administrative & support | 2024 |
| Falcon Therapy & Wellbeing Limited | Public administration | 2024 |
| Falcon Works Property Limited | Real estate | 2019 |
| Falconhurst Limited | Real estate | 2004 |
| Falcons Transport Limited | Transport & logistics | 2012 |
| Falkirk Impex Ltd | Extraterritorial | 2020 |
| Fallasei Limited | Information & communication | 2012 |
| Fallmart Trading Ltd | Wholesale & retail | 2024 |
| Fallon Court Management Company Limited | Households | 2026 |
| Falsum Consulting Limited | Professional & scientific | 2020 |
| FAM Anghel Estates Ltd | Real estate | 2019 |