| F1T Limited | Arts & recreation | 2019 |
| F2 Chemicals Limited | Manufacturing | 1992 |
| F3 Sports Management Ltd | Arts & recreation | 2017 |
| F7 Preston Ltd | Hospitality | 2025 |
| F90 Films Ltd | Information & communication | 2026 |
| FA Commercial Investment Limited | Real estate | 2021 |
| FA Fashion Ltd | Wholesale & retail | 2026 |
| FA Investment Properties Limited | Real estate | 2020 |
| Faam B Limited | Administrative & support | 2024 |
| FAB Floors and Carpets Ltd | Wholesale & retail | 2024 |
| Fabn Ltd | Wholesale & retail | 2026 |
| Fabrik Acquisitions Ltd | Real estate | 2014 |
| Fabrik Education Limited | Professional & scientific | 2018 |
| Fabrik Invest (London) Limited | Construction | 2020 |
| Fabrik Invest Limited | Real estate | 2019 |
| Fabrik Partners Ltd | Construction | 2014 |
| Fabrik Property Group Ltd | Real estate | 2019 |
| Fabrik SMG Ltd | Real estate | 2020 |
| FAC Law Ltd | Administrative & support | 2025 |
| Face to Face Sales Solutions Limited | Wholesale & retail | 2026 |
| Face to Face Service Solutions Limited | Wholesale & retail | 2018 |
| Facer Preston Limited | Real estate | 2018 |
| Facility 24/7 Limited | Construction | 2024 |
| Factory Earth Ltd | Professional & scientific | 2026 |
| Factory North Ltd | Manufacturing | 2025 |
| Factory Shop Direct Ltd | Hospitality | 2022 |
| Fade Barbers AL Ltd | Other services | 2021 |
| Fadzo Ltd | Health & social care | 2023 |
| Fahamrad Ltd | Health & social care | 2022 |
| Fahh Limited | Real estate | 2024 |
| Fahh Properties Limited | Real estate | 2019 |
| Faill Freight Limited | Transport & logistics | 2020 |
| Faintlygold Ltd | Hospitality | 2025 |
| Fairfield Asset Management Ltd | Households | 2020 |
| Fairhaven 1 Ltd | Real estate | 2026 |
| Fairhaven 2 Ltd | Real estate | 2026 |
| Fairhaven Developments Ltd | Extraterritorial | 2020 |
| Fairhaven Investments Ltd | Real estate | 2018 |
| Fairhaven Management Services Limited | Extraterritorial | 2008 |
| Fairhope Court (Management) Limited | Households | 1972 |
| Fairley Rail Limited | Professional & scientific | 2011 |
| Fairview Poultry Services Limited | Agriculture & fishing | 2010 |
| Fairway Interiors & Kitchens Ltd | Wholesale & retail | 2021 |
| Fairwinds Enterprise Ltd | Real estate | 2026 |
| Fairy Flavours Ltd | Hospitality | 2025 |
| Fairy Fountain Gift Shop Ltd | Manufacturing | 2021 |
| Fairy Labs Ltd | Information & communication | 2026 |
| Fairydust Events Ltd | Other services | 2020 |
| Fairytale Dreamer Ltd | Extraterritorial | 2021 |
| Faisal Imports Limited | Professional & scientific | 1997 |
| Faisal Investments Limited | Professional & scientific | 2002 |
| Faisaltec Limited | Professional & scientific | 2022 |
| Faisaltex Limited | Professional & scientific | 1987 |
| Faisaltex Manufacturing Limited | Professional & scientific | 1991 |
| Faith Fostering NE Ltd | Health & social care | 2024 |
| Faith Fruits Limited | Extraterritorial | 2025 |
| Faizel Moosa Ltd | Administrative & support | 2022 |
| Fakin IT Tanning and Beauty Bar Limited | Other services | 2018 |
| Faktor Limited | Wholesale & retail | 2022 |
| Falcon Gate Property Limited | Real estate | 2024 |
| Falcon Homes North West Limited | Construction | 2017 |
| Falcon Scaffolding Limited | Administrative & support | 2018 |
| Falkner Street Limited | Real estate | 2015 |
| Fallback Systems Limited | Other services | 2004 |
| Falling Forwards Limited | Professional & scientific | 2023 |
| Faloodah Wala Ltd | Hospitality | 2024 |
| FAM Medical Services Limited | Health & social care | 2024 |
| FAM Preston Ltd | Real estate | 2019 |
| Famevalley (Burbage) Limited | Wholesale & retail | 2012 |
| Famill Property Management Co Limited | Real estate | 2022 |
| Family Costings Limited | Administrative & support | 2015 |
| Family Development Group Limited | Real estate | 2021 |
| Family Law Lawyer - Child Law Lawyer - Divorce Law Lawyer Limited | Professional & scientific | 2023 |
| Family Law Lawyer Limited | Professional & scientific | 2023 |
| Family Law Lawyer Manchester Ltd | Professional & scientific | 2024 |
| Family Walks Property LLP | | 2006 |
| FAN Medical Ltd | Health & social care | 2023 |
| Fancy Face Limited | Wholesale & retail | 2024 |
| Fanepshop Ltd | Wholesale & retail | 2022 |
| Fanfare Sport Ltd | Professional & scientific | 2024 |
| Fantastic Fiction Limited | Information & communication | 2006 |
| FAP Properties Limited | Real estate | 2019 |
| FAP Trading Ltd | Administrative & support | 2015 |
| Faqir Health Care Limited | Health & social care | 2017 |
| FAR East Oriental Food Limited | Wholesale & retail | 2010 |
| Faragher Engineering Limited | Wholesale & retail | 2012 |
| Fare Farms Ltd | Agriculture & fishing | 2015 |
| Faremaxpro Ltd | Professional & scientific | 2019 |
| Farhad Property Group Ltd | Real estate | 2022 |
| Farhad Services Ltd | Manufacturing | 2018 |
| Farholme Limited | Professional & scientific | 2006 |
| Fariha Kouser Limited | Wholesale & retail | 2025 |
| Farina & Co (Lytham) Limited | Hospitality | 2017 |
| Farley & Williams Estates Ltd | Households | 2026 |
| Farley Decorators Limited | Construction | 2004 |
| Farm Generation Limited | Energy | 2011 |
| Farm on the Fell Limited | Hospitality | 2022 |
| Farm Tech Supplies North Ltd | Manufacturing | 2014 |
| Farmers Arms (Garstang) Ltd | Hospitality | 2012 |
| Farmplus Constructions Limited | Construction | 1988 |