| Faanch Limited | Wholesale & retail | 2024 |
| FAB Digital Ltd | Professional & scientific | 2021 |
| Fahidi Commerce Ltd | Wholesale & retail | 2026 |
| Fair and Square (UK) Ltd | Wholesale & retail | 2008 |
| Fair and Square International Ltd | Wholesale & retail | 2020 |
| Fairbright Property Services Limited | Other services | 2017 |
| Faircharge Ltd | Professional & scientific | 2023 |
| Faircroft Trade Limited | Wholesale & retail | 2026 |
| Fairfield Builders Limited | Construction | 2002 |
| Fairfield Lofts Limited | Agriculture & fishing | 2022 |
| Fairfield Mechanical Ltd | Construction | 2020 |
| Fairn Enough Limited | Arts & recreation | 2024 |
| Falcon Shop Ltd | Wholesale & retail | 2024 |
| Falconcrest Trade Limited | Wholesale & retail | 2026 |
| Fallon Associates Limited | Financial services | 2004 |
| Falzon Talent Ltd | Administrative & support | 2024 |
| Fame Consulting Ltd | Administrative & support | 2024 |
| Fandom Forge Ltd | Wholesale & retail | 2026 |
| Fanny ANN Ltd | Wholesale & retail | 2020 |
| Farhadfetch Ltd | Wholesale & retail | 2025 |
| Farm 2000 Energy Limited | Professional & scientific | 2006 |
| Farm 2000 Limited | Professional & scientific | 2006 |
| Fassflicks Limited | Arts & recreation | 2024 |
| Fast Grow Limited | Wholesale & retail | 2024 |
| Fast Nexa Ltd | Wholesale & retail | 2025 |
| Fast Property and Facilities Management Limited | Real estate | 2024 |
| Fast Track Computer Training Limited | Information & communication | 2010 |
| Fastfit Nationwide (Holdings) Limited | Wholesale & retail | 2019 |
| Fastfit Nationwide Limited | Wholesale & retail | 1997 |
| Fastfit Nationwide Midlands Limited | Wholesale & retail | 2020 |
| Fastfit Tyres & Exhausts (Kidderminster) Limited | Wholesale & retail | 1986 |
| Fawks Ltd | Information & communication | 2015 |
| Fawzan Ltd | Wholesale & retail | 2025 |
| Febrh Ltd | Real estate | 2022 |
| Feldav Developments Limited | Hospitality | 2018 |
| Fellows Building and Maintenance Ltd | Construction | 2025 |
| Fellows Financial Limited | Professional & scientific | 2016 |
| Fendrive Limited | Information & communication | 2023 |
| Fenvise Limited | Construction | 1986 |
| Fera Home Improvements Ltd | Construction | 2025 |
| Fergiland Limited | Wholesale & retail | 2002 |
| Ferndale Gate (Blackwell) Management Company Limited | Households | 2010 |
| Ferndale Solutions Limited | Administrative & support | 1997 |
| Fernleigh Flats (Bromsgrove) Management Limited | Households | 1993 |
| Ferox Maintenance Ltd | Construction | 2018 |
| Ferst Estates Limited | Real estate | 2006 |
| Ferst Holdings Limited | Professional & scientific | 2006 |
| Fews Marquees Limited. | Administrative & support | 2000 |
| FF Property Holdings Limited | Real estate | 2021 |
| Field House Residential Home Limited | Health & social care | 2013 |
| Fieldgrove Contractors Ltd | Construction | 2026 |
| Fieldstone Trade Limited | Wholesale & retail | 2026 |
| Fight Sports Scholarship Programme CIC | Education | 2022 |
| Fighting Fit Events Limited | Arts & recreation | 2017 |
| Filmer Services Ltd | Professional & scientific | 2025 |
| Filmmakers United Community Interest Company | Information & communication | 2024 |
| Filterite Limited | Administrative & support | 2003 |
| FIN Foods Limited | Extraterritorial | 2022 |
| Final Straw Productions Ltd | Administrative & support | 2020 |
| Final Third Sport CIC | Professional & scientific | 2026 |
| Final Third Sport Consultancy Ltd | Professional & scientific | 2023 |
| Financial Counselling Services Limited | Financial services | 2007 |
| Finext Ltd | Administrative & support | 2019 |
| Finsight Advisory Limited | Professional & scientific | 2024 |
| Finstall Property Services Limited | Construction | 2021 |
| Finwood Designs Limited | Administrative & support | 2005 |
| Fiona Colbeck Limited | Information & communication | 2007 |
| Fiona Seres Limited | Arts & recreation | 2012 |
| Fire Control Services Limited | Manufacturing | 2006 |
| Fire Horse Passive Fire Protection Limited | Manufacturing | 2026 |
| Firefly Jars Entertainment UK Limited | Arts & recreation | 2024 |
| Firesand Asset Management Limited | Real estate | 2025 |
| Firewell Limited | Wholesale & retail | 2024 |
| Firmament Ltd | Arts & recreation | 2007 |
| First Grade International Limited | Wholesale & retail | 2002 |
| First Image (U.K.) Limited | Wholesale & retail | 2000 |
| First Service Frozen Foods Holdings Limited | Administrative & support | 2011 |
| First Service Frozen Foods Limited | Wholesale & retail | 2005 |
| Fit - Consultants Limited | Information & communication | 2025 |
| Fit Film Limited | Administrative & support | 2024 |
| FIT360 Limited | Information & communication | 2016 |
| Five Rivers Car Centre Limited | Wholesale & retail | 2025 |
| FIX 8 Films Limited | Information & communication | 2016 |
| FIX IT Right Heating and Plumbing Ltd | Construction | 2022 |
| FIX UP Property Maintenance Ltd | Construction | 2012 |
| Fizzyfinds Ltd | Wholesale & retail | 2025 |
| FJH Consultancy Services Limited | Professional & scientific | 2023 |
| FJM Carpentry Contractors Limited | Construction | 2025 |
| FJP Squire Ltd | Real estate | 2018 |
| Flashcare Recruitment Limited | Health & social care | 2023 |
| Flasline Limited | | 1972 |
| Flatpack Ninja Ltd | Other services | 2021 |
| Flavours Bengali Cuisine Limited | Hospitality | 2018 |
| Flaxley Properties Limited | Real estate | 2016 |
| Fleetmaster Operational Support Services Limited | Transport & logistics | 2001 |
| Fleur James Limited | Real estate | 2020 |
| Flexitt Living Ltd | Wholesale & retail | 2026 |
| Flick Art Pictures Limited | Information & communication | 2011 |
| Flightpath Aviation Training Ltd | Education | 2019 |
| Flightpath Flying Club Ltd. | Arts & recreation | 2012 |