| Farmyard Stories Ltd | Manufacturing | 2013 |
| Farrar & Mcgowan Ltd | Professional & scientific | 2016 |
| Farrer Property Ltd | Construction | 2020 |
| Farriers Homes Limited | Real estate | 2022 |
| Farrington Meats Ltd | Wholesale & retail | 2018 |
| Farry Utilities Limited | Construction | 2005 |
| Farsan Maintenace Limited | Construction | 2026 |
| FAS 4 U Ltd | Financial services | 2021 |
| Fasc Plumbing Ltd | Construction | 2026 |
| Fascial Release Systems Ltd | Health & social care | 2014 |
| Fashion Brands Collective Limited | Wholesale & retail | 2019 |
| Fashion Gallery Limited | Wholesale & retail | 2004 |
| Fashion Point Limited | Wholesale & retail | 2019 |
| Fashionchek Ltd | Wholesale & retail | 2021 |
| Fasm Sports Management Ltd | Other services | 2022 |
| Fast Fence Contracting Ltd | Construction | 2008 |
| Fast Flash Car Valeting Ltd | Administrative & support | 2024 |
| Fast Flavour Preston Ltd | Hospitality | 2025 |
| Fast Food Preston Ltd | Hospitality | 2019 |
| Fast Orbit Limited | Professional & scientific | 2021 |
| Fast Smart Fitness Ltd | Other services | 2019 |
| Fast Smart Solutions Limited | Professional & scientific | 2017 |
| Fast Track Logistics Courier's Limited | Transport & logistics | 2025 |
| Fast Transit Logistics Ltd | Transport & logistics | 2023 |
| Fast Valley Limited | Extraterritorial | 2016 |
| Fast Van Removal Ltd | Transport & logistics | 2025 |
| Fast Waste Removal Ltd | Water & waste | 2025 |
| Fastclick Ltd | Wholesale & retail | 2025 |
| Faster Cleaning Ltd | Transport & logistics | 2020 |
| Fastflow Heating and Plumbing Ltd | Construction | 2024 |
| Fastline Coatings Limited | Manufacturing | 1988 |
| Fastline Supplies Ltd | Wholesale & retail | 2025 |
| Fastpharmacy Limited | Extraterritorial | 2011 |
| FAT Cafe (Lancs) Limited | Hospitality | 2026 |
| FAT Duck Surveys Limited | Professional & scientific | 2021 |
| FAT Fudgy's Ltd | Hospitality | 2025 |
| FAT Scran CHA Ltd | Hospitality | 2025 |
| Fatboyzzz Ltd | Hospitality | 2026 |
| Father and SON Karaoke Limited | Arts & recreation | 2021 |
| Fatima Holdings Limited | Financial services | 2017 |
| FAV Group Holdings Ltd | Hospitality | 2024 |
| Faveo Ltd | Professional & scientific | 2024 |
| Fawdinex Limited | Arts & recreation | 2018 |
| Fawltytowers Limited | Hospitality | 2023 |
| Fawziyah Holdings Limited | Financial services | 2017 |
| Fayazi Project Management Ltd | Professional & scientific | 2023 |
| Faye Walton Retail Consultant Ltd | Professional & scientific | 2023 |
| Fayre Haven Investments Ltd | Professional & scientific | 1996 |
| Fayre Inns and Venues Limited | Hospitality | 2017 |
| Fayre Table (Garstang) Limited | Hospitality | 2014 |
| Fayre Table (Preston) Limited | Hospitality | 2014 |
| Fayre Table Blackburn Limited | Hospitality | 2022 |
| Fayre Table Lancaster Ltd | Hospitality | 2025 |
| Fays Investments Ltd | Construction | 2020 |
| Fayz 5 Limited | Other services | 2017 |
| Fayz 5 Plastics Limited | Manufacturing | 2017 |
| Fayzee Services Ltd | Transport & logistics | 2025 |
| FAZ Direct Ltd | Wholesale & retail | 2022 |
| Fazila Foods Limited | Manufacturing | 2016 |
| Fazila Frozen Foods Limited | Manufacturing | 2017 |
| FB Barbers Limited | Other services | 2025 |
| FB Management Limited | Construction | 2025 |
| FBA Navigators Ltd | Education | 2025 |
| Fbakings Ltd | Wholesale & retail | 2026 |
| Fbbiz LLP | | 2012 |
| Fbss Limited | Information & communication | 2025 |
| FC Creations Ltd | Wholesale & retail | 2022 |
| FCE Estates Limited | Real estate | 2024 |
| FCE Group Holdings Limited | Financial services | 2024 |
| FCG Purchase Limited | Financial services | 2025 |
| Fconline Ltd | Information & communication | 2002 |
| FD Commercial Finance Limited | Extraterritorial | 2004 |
| FD Professional Services Limited | Professional & scientific | 2019 |
| FDC (Holdings) Limited | Transport & logistics | 1997 |
| FDK Ltd | Information & communication | 2024 |
| FDS International Ltd | Manufacturing | 2025 |
| Fearless Leadership Partnership Ltd | Information & communication | 2013 |
| Fearn Developments Ltd | Construction | 2008 |
| Fearnley Management Company Limited | Households | 2009 |
| Feather, Fleece & FUR Limited | Agriculture & fishing | 2022 |
| Feazer Developments Ltd | Construction | 2016 |
| FEC Private Hire Limited | Transport & logistics | 2015 |
| Feel the Noise Events Ltd | Information & communication | 2024 |
| Feel Unique Limited | Other services | 2016 |
| Feezu Limited | Wholesale & retail | 2025 |
| Fejtools Ltd | Construction | 2025 |
| Felix Knight Limited | Arts & recreation | 2010 |
| Felix Medicus Limited | Health & social care | 2016 |
| Fell Group Limited | Construction | 2024 |
| Fell Medical Ltd | Health & social care | 2009 |
| Fell View Consultancy Limited | Professional & scientific | 2025 |
| Fell View Homes Ltd | Construction | 2019 |
| Fell View Projects Limited | Manufacturing | 2023 |
| Fellside HR Ltd | Administrative & support | 2025 |
| Femalebodyworkouts Limited | Arts & recreation | 2022 |
| Feminine Muslimah Ltd | Health & social care | 2025 |
| Femme Beauty Ltd | Other services | 2015 |
| FEN Lane Gridco Limited | Energy | 2022 |
| Fence Foot Farm Management Limited | Households | 2022 |
| Fence-Ai Limited | Financial services | 2022 |