| Ferne Homes Ltd | Other services | 2025 |
| Ferrystormcare Ltd | Health & social care | 2024 |
| Festival Support Services Limited | Manufacturing | 2023 |
| Fetherston Farm Ltd | Agriculture & fishing | 2025 |
| Fetherston Grange Residents Association Limited | Households | 1983 |
| Fevick Resources UK Limited | Wholesale & retail | 2024 |
| FHR Solutions Ltd | Professional & scientific | 2009 |
| FIA PCI Ltd | Health & social care | 2022 |
| Fibretek Ltd | Information & communication | 2024 |
| Ficarol Healthcare Ltd | Health & social care | 2013 |
| Fieldhouse Motors Limited | Wholesale & retail | 2024 |
| Fifar Limited | Professional & scientific | 2015 |
| Fifteen 10 Ltd | Financial services | 2020 |
| Fifti Holdings Limited | Real estate | 2017 |
| Fifti Property Limited | Real estate | 2019 |
| Fiftyone Engineering Limited | Professional & scientific | 2021 |
| Fight Starter Ltd | Arts & recreation | 2004 |
| Figuregot Ltd | Arts & recreation | 2022 |
| Filmi Ltd | Information & communication | 2023 |
| Filter Fit Limited | Administrative & support | 1989 |
| Financa Limited | Education | 2021 |
| Finance Matters Ltd | Financial services | 2006 |
| Financialearn Ltd | Information & communication | 2018 |
| Finchall Associates Limited | Professional & scientific | 2012 |
| Findigo Homes Ltd | Real estate | 2026 |
| Fine Feather Professionals Ltd | Wholesale & retail | 2022 |
| Finehurst Limited | | 1985 |
| Finest Homes Limited | Real estate | 2001 |
| Fingerbaton Ltd | Manufacturing | 2020 |
| Finishes and Interiors Sector Limited | Other services | 1997 |
| Finman Group UK Limited | Professional & scientific | 2021 |
| Finnlan Homes Ltd | Real estate | 2022 |
| Finsight Limited | Information & communication | 1999 |
| Finspa Limited | Manufacturing | 1958 |
| Finspa Properties Ltd | Administrative & support | 2018 |
| Fintech ED Ltd | Education | 2026 |
| Finver Ltd | Financial services | 2025 |
| Fire Crab Limited | Information & communication | 2021 |
| Fire Risk Assessment Union Ltd | Other services | 2024 |
| Firecrest Homes Ltd | Construction | 2021 |
| Fireguard Birmingham Ltd | Construction | 2020 |
| Firelight Detection & Electrical Systems Ltd | Construction | 2017 |
| Firenet Security Ltd | Public administration | 2019 |
| Firman Consulting Limited | Professional & scientific | 2023 |
| Firmus Utilities Ltd | Construction | 2022 |
| Firo Investments Ltd | Construction | 2018 |
| First Allied Limited | Financial services | 2013 |
| First Central Securities Limited | Administrative & support | 1989 |
| First Class Beauty Ltd | Other services | 2023 |
| First Class Housing Limited | Real estate | 2020 |
| First Estates Limited | Professional & scientific | 2001 |
| First for Energy Ltd | Information & communication | 2023 |
| First for Training Ltd | Professional & scientific | 2025 |
| First Gateway Care Providers Ltd | Health & social care | 2014 |
| First Rate Carpentry & Maintenance Ltd | Construction | 2003 |
| First Residential Investment Limited | Real estate | 1999 |
| First Steps Football LLP | | 2023 |
| First Steps Nursery (Solihull) Limited | Education | 2004 |
| First Steps Nursery Holdings (Solihull) Limited | Financial services | 2022 |
| Fiscal Group Limited | Administrative & support | 2023 |
| Fiscus Consultancy Ltd | Financial services | 2017 |
| Fishwick Ward Consultancy Ltd | Professional & scientific | 2019 |
| Fishwish Limited | Wholesale & retail | 2025 |
| Fit and Healthy Mind Ltd | Health & social care | 2012 |
| Fit for a First Lady TV Ltd | Information & communication | 2022 |
| Fit X FED CIC | Other services | 2023 |
| Fit X Ltd | Professional & scientific | 2021 |
| Fit XPO Events Ltd | Arts & recreation | 2023 |
| Fit XPO UK Ltd | Arts & recreation | 2019 |
| FIT4SCHOOLS (Midlands) Ltd | Other services | 2019 |
| Fitness by Jade Ltd | Education | 2024 |
| Fitnesse Bottles Limited | Wholesale & retail | 2023 |
| Fitted Living Ltd | Construction | 2026 |
| Fitzgerald Arts Management Limited | Arts & recreation | 2011 |
| Fitzpatrick Contractors Ltd | Administrative & support | 2022 |
| Fitzpatrick Residential Ltd | Construction | 2008 |
| Five Capital Investments (London) Limited | Professional & scientific | 2020 |
| Five H Limited | Hospitality | 2017 |
| Five Homes (Greenhill) Limited | Construction | 2022 |
| Five Homes (Shirley) Limited | Construction | 2019 |
| Five Homes (York House) Limited | Construction | 2020 |
| Five Homes Limited | Construction | 2016 |
| Five Lamps Plumbing Ltd | Information & communication | 2024 |
| Five Plus Solutions Limited | Education | 2015 |
| Five Points Ltd | Real estate | 2026 |
| Five Saints Energy Ltd | Wholesale & retail | 2023 |
| Five Star Inc Ltd | Hospitality | 2019 |
| Five Star Midlands Limited | Transport & logistics | 2017 |
| Five Wealth Management Limited | Professional & scientific | 2025 |
| FIX a Alloy Limited | Wholesale & retail | 2024 |
| FIX UP Properties Limited | Real estate | 2024 |
| Fix-A-Floor UK Ltd | Wholesale & retail | 2021 |
| Fizz and FIN Limited | Wholesale & retail | 2017 |
| Fizz Digital Limited | Information & communication | 2010 |
| Fizz Group Limited | Extraterritorial | 2015 |
| Fizz Photography Limited | Professional & scientific | 2017 |
| Fizz Portraits Limited | Professional & scientific | 2012 |
| FJM Logistics Ltd Ltd | Transport & logistics | 2024 |
| FJS Executive Chauffeur Services Ltd | Transport & logistics | 2026 |
| FK Dent Limited | Health & social care | 2024 |