| F5 Media Ltd | Information & communication | 2024 |
| Facematt UK Limited | Arts & recreation | 2014 |
| Factor X Media Limited | Professional & scientific | 2024 |
| Faddy's Pet Heaven Ltd | Wholesale & retail | 2026 |
| Fadira Living Limited | Real estate | 2026 |
| Faim Bedford C.I.C. | Education | 2025 |
| Faithful Pilgrim Ltd | Administrative & support | 2024 |
| Faizas Beauty Salon Ltd | Administrative & support | 2018 |
| FALA1 Ltd | Financial services | 2025 |
| Famous Fries Ltd | Hospitality | 2025 |
| Fantio Rock Ltd | Wholesale & retail | 2024 |
| Farm Fresh Dairies Limited | Wholesale & retail | 2024 |
| Farmaceutics Healthcare Limited | Wholesale & retail | 2011 |
| Farmacista Lancashire Limited | Wholesale & retail | 2024 |
| Farmhouse Biscuits (Holdings) Limited | Financial services | 2019 |
| Farmhouse Biscuits Limited | Manufacturing | 1973 |
| Farnworth Limited | Hospitality | 2018 |
| Farnworth Rose Limited | Professional & scientific | 2012 |
| Farooshi Traders Ltd | Wholesale & retail | 2026 |
| Farrsec Ltd | Manufacturing | 2015 |
| Farvande Limited | Manufacturing | 2017 |
| Fasseh UR Rehman Limited | Wholesale & retail | 2017 |
| Fast & Furious Drivers Limited | Transport & logistics | 2026 |
| Fast Move Courier Ltd | Transport & logistics | 2024 |
| Fastfood AM Ltd | Hospitality | 2023 |
| Fastway Trade Limited | Construction | 2020 |
| FAT Fans Ltd | Information & communication | 2026 |
| Fatjoes Foods Limited | Hospitality | 2020 |
| Fatjoes in Keighley Limited | Hospitality | 2018 |
| FBN Trading Ltd | Transport & logistics | 2025 |
| Feel Healthy Ltd | Wholesale & retail | 2024 |
| Feesource Limited | Professional & scientific | 2005 |
| Ferguson Engineering (Holdings) Limited | Financial services | 2003 |
| Ferguson Engineering (Nelson) Limited | Professional & scientific | 2021 |
| Ferguson Engineering (Northern) Limited | Other services | 1987 |
| Ferguson Engineering Group Holdings Ltd | Professional & scientific | 2021 |
| Ferguson Laser Engineering Limited | Professional & scientific | 2008 |
| Fiat Specialist Limited | Wholesale & retail | 2025 |
| Fiber Knits Ltd | Wholesale & retail | 2021 |
| Fibet Rubber Bonding (U.K.) Limited | Wholesale & retail | 1992 |
| Ficu Convenience Store Ltd | Wholesale & retail | 2025 |
| Fieldstone END Limited | Construction | 2023 |
| Figaro Tamas Papp & Csaba Sulyok Ltd | Other services | 2012 |
| Finance My Business Limited | Financial services | 2022 |
| Finchley Legal Limited | Professional & scientific | 2019 |
| Findslines Limited | Wholesale & retail | 2022 |
| Finishing Touches Flooring Ltd. | Wholesale & retail | 2018 |
| Finsley Gate Car Sales Limited | Wholesale & retail | 2006 |
| Fire Door Services (NW) Ltd | Public administration | 2022 |
| Firelink Systems Ltd | Information & communication | 2026 |
| Fireworks R US Ltd | Extraterritorial | 2018 |
| First Drop Welfare Ltd | Water & waste | 2025 |
| First FIX Contractors Ltd | Other services | 2020 |
| First Signs Limited | Manufacturing | 1980 |
| First Trend Limited | Wholesale & retail | 2020 |
| Fitzpatrick Fabrications Ltd | Manufacturing | 2020 |
| Fitzpatricks (UK) Ltd | Manufacturing | 2003 |
| Five Build Limited | Construction | 2018 |
| Fizzmo Limited | Wholesale & retail | 2012 |
| FJ First Ltd | Arts & recreation | 2024 |
| Flash Properties Group Ltd | Real estate | 2024 |
| Flat 26 Ltd | Professional & scientific | 2018 |
| Flavour Fusion Ltd | Hospitality | 2026 |
| Fleetseen Limited | Professional & scientific | 2003 |
| Fletcher Fairhurst Ltd | Real estate | 2025 |
| Flipngo Limited | Hospitality | 2026 |
| Flipzilla Limited | Wholesale & retail | 2026 |
| Flooring & Ceramics Limited | Wholesale & retail | 2009 |
| Florea Darius Construction Ltd | Construction | 2022 |
| FLY High Travel Limited | Administrative & support | 2024 |
| Flying Hawk Ltd | Wholesale & retail | 2021 |
| Fmak Ltd | Real estate | 2016 |
| Foji Retails Ltd | Wholesale & retail | 2026 |
| Footprint Design Ltd | Professional & scientific | 2020 |
| Footwear Plus Ltd | Wholesale & retail | 2010 |
| Forest Street Car Sales Ltd | Wholesale & retail | 2021 |
| Fort Trading Limited | Wholesale & retail | 2019 |
| Fortitude Systems Ltd | Information & communication | 2025 |
| Fortuneflow Advertising Ltd | Professional & scientific | 2025 |
| Foundation Sports and Technical Clothing Company Ltd | Manufacturing | 2025 |
| FR Catering Ltd | Wholesale & retail | 2015 |
| Frank Belshaw Building Surveyors Ltd | Administrative & support | 2009 |
| Frank Taylor & AYS Ltd | Wholesale & retail | 2019 |
| Freddy's Lancashire Ltd | Hospitality | 2024 |
| Freedom Sports Limited | Wholesale & retail | 2012 |
| Fresh Cleaning 23 Ltd | Administrative & support | 2025 |
| Fresh Perspective Properties Ltd | Real estate | 2025 |
| Fresto Sticks Blackburn Limited | Hospitality | 2025 |
| Fresto Sticks Preston Limited | Wholesale & retail | 2025 |
| Friction Labs Ltd | Wholesale & retail | 2024 |
| Frost Rail Services Limited | Construction | 2017 |
| Frying Haddock Limited | Hospitality | 2025 |
| FS UK Fabrications Ltd | Wholesale & retail | 2022 |
| Full Range Physio Ltd | Health & social care | 2025 |
| Fun-Atics Ltd | Arts & recreation | 2020 |
| Funda Education & Childcare Ltd | Education | 2008 |
| Funda Facilities (Enterprise) Ltd | Education | 2022 |
| Funda Franchise Ltd | Administrative & support | 2022 |
| Funda Group Ltd | Financial services | 2022 |
| Furoshiki Limited | Financial services | 2014 |