| Faaasm Ltd | Professional & scientific | 2025 |
| Fabio Dimarco Kitchen & Bedrooms Ltd | Construction | 2023 |
| Facade Solutions Limited | Financial services | 2018 |
| Fairway Enterprises (Burbage) Limited | Real estate | 2008 |
| Fairways Court (Hinckley) Limited | Real estate | 1988 |
| Famly Ltd | Information & communication | 2022 |
| Farm Room Ltd | Education | 2026 |
| Farrelly Engineering Ltd | Professional & scientific | 2022 |
| Farrukh Ventures Ltd | Wholesale & retail | 2025 |
| Farside Properties Limited | Real estate | 2017 |
| Fathom House Ltd | Professional & scientific | 2012 |
| Faulkner &Company (Block Management) Limited | Real estate | 1992 |
| Feet of Clay Limited | Extraterritorial | 2012 |
| Fenester Sash Windows Limited | Manufacturing | 2023 |
| Fernandes & Thornhill Limited | Professional & scientific | 2012 |
| Fernhill Software Ltd | Information & communication | 2013 |
| Ferriss Bridal Ltd | Wholesale & retail | 2018 |
| Fetn Ltd | Education | 2025 |
| FF Cardiff Ltd | Hospitality | 2023 |
| FIN Feather & FUR Ltd | Other services | 2023 |
| Finer Lines Aesthetics Ltd | Health & social care | 2019 |
| Fire Curtains (UK) Limited | Manufacturing | 2014 |
| Fire Curtains Franchise Limited | Financial services | 2022 |
| Fire Curtains Group Limited | Financial services | 2014 |
| Fire Curtains London Limited | Manufacturing | 2014 |
| Fire Door Check Ltd | Public administration | 2026 |
| FIRM22 Ltd | Construction | 2015 |
| Fishers Farm Management Company Limited | Households | 2021 |
| Flagstream International Limited | Transport & logistics | 2023 |
| Flagstream Limited | Transport & logistics | 2000 |
| Flagstream One Limited | Professional & scientific | 2014 |
| Flanders Group Ltd | Real estate | 2024 |
| Flavell Court (Burbage) Management Limited | Households | 2008 |
| Fleming Mead Ltd | Real estate | 2015 |
| Flex Online Limited | Information & communication | 2015 |
| Flintham Ventures Ltd | Other services | 2022 |
| Flobee Designs Ltd. | Wholesale & retail | 2022 |
| Floofs and Scales Pet Supplies Ltd | Manufacturing | 2026 |
| Floorstock Limited | Wholesale & retail | 2008 |
| Florinely Limited | Transport & logistics | 2024 |
| Floris Design Ltd | Manufacturing | 2024 |
| Fludes S H Limited | Wholesale & retail | 2002 |
| Flutterbies Preschool Limited | Education | 2018 |
| Flywheel Engine Ltd | Professional & scientific | 2025 |
| FNR Consultancy Ltd | Other services | 2021 |
| Foremost Pharma Limited | Wholesale & retail | 2017 |
| Foresight Analytics & Solutions Ltd | Information & communication | 2023 |
| Forget ME NOT (Thrapston) Limited | Wholesale & retail | 2010 |
| Forsythe Estates LLP | | 2024 |
| Fort Civils Ltd | Construction | 2024 |
| FORTI5Y Ltd | Other services | 2024 |
| Fortrax LLP | | 2024 |
| Forwardhash Consulting Limited | Information & communication | 2014 |
| Fosse Express Ltd | Wholesale & retail | 2025 |
| Fosse Technology Limited | Information & communication | 2022 |
| Fosse Travel Ltd | Administrative & support | 2025 |
| Fosseway Environmental Limited | Professional & scientific | 2020 |
| Fosseway Tapes & Fixings Limited | Administrative & support | 2004 |
| Fosseway Tapes Holdings Limited | Financial services | 2012 |
| Fountmere Ltd | Professional & scientific | 2025 |
| Four Pillars Care Group Ltd | Health & social care | 2026 |
| FR Corporation Limited | Health & social care | 2026 |
| Frank Edwards Group Limited | Professional & scientific | 2008 |
| Fries With Benefits Ltd | Hospitality | 2025 |
| Frip Finishing Ltd | Manufacturing | 1994 |
| Frip Foiling Limited | Manufacturing | 2024 |
| Frip Packaging Lamination Ltd | Manufacturing | 2006 |
| Friston Property Services Limited | Real estate | 2015 |
| Frontier Heating Ltd | Construction | 2020 |
| Fruition Property Developments Limited | Construction | 2019 |
| Funky IT Ltd | Information & communication | 2016 |
| Funl Limited | Professional & scientific | 2018 |
| Fuskee Ltd | Wholesale & retail | 2023 |
| Future Surveys Limited | Construction | 2017 |
| Future-Re Ltd | Administrative & support | 2016 |
| G and L Roofing Contractors and SON Limited | Construction | 2022 |
| G Belcher Heating Ltd | Construction | 2026 |
| G D L Transport Limited | Transport & logistics | 2017 |
| G J R Financial Services Ltd | Financial services | 2015 |
| G J Seals Ltd | Water & waste | 2014 |
| G M P Services (Midlands) Ltd | Administrative & support | 2013 |
| G Miti Ltd | Health & social care | 2022 |
| G S Hinckley Limited | Administrative & support | 2008 |
| G S Vraitch Ltd | Administrative & support | 2025 |
| G T Racing Limited | Wholesale & retail | 2012 |
| GA Butlers UK Ltd | Wholesale & retail | 2017 |
| GAA Consultancy Ltd | Professional & scientific | 2024 |
| Gabri UK Limited | Information & communication | 2006 |
| Gaisford Consulting Limited | Administrative & support | 2016 |
| Gallacher Operations Limited | Construction | 2010 |
| Gamaq Lockwood Limited | Health & social care | 2020 |
| Gamaq Ltd | Professional & scientific | 2025 |
| Gamaq Nook Limited | Health & social care | 2020 |
| Gamma Games Ltd | Wholesale & retail | 2025 |
| Garage Converters (Midlands) Ltd | Construction | 2022 |
| Gardezi Properties Limited | Real estate | 2006 |
| Garner-Bland Limited | Construction | 2011 |
| Garnet Home Care Services Limited | Health & social care | 2024 |
| Garrison Trade Centre Limited | Wholesale & retail | 2018 |
| Garry Dolman Hairdressing Limited | Other services | 2014 |