| Family Butchers Ltd | Wholesale & retail | 2023 |
| Family Care and Support Ltd | Health & social care | 2024 |
| Family Graves Memorials Limited | Extraterritorial | 2009 |
| Family Grocery Shop Ltd | Other services | 2024 |
| Family Medicine Specialists Ltd | Administrative & support | 2021 |
| Familymart Ltd | Wholesale & retail | 2026 |
| Fammanuel UK Limited | Health & social care | 2015 |
| Fantex Limited | Extraterritorial | 2009 |
| Fanu Traders Limited | Wholesale & retail | 2026 |
| FAR Forest Land Limited | Real estate | 2019 |
| Faraday Gardens Management Co Limited | Households | 2018 |
| Farah and Zain Limited | Health & social care | 2015 |
| Farah Associates Limited | Professional & scientific | 2014 |
| Faraway Shores Limited | Administrative & support | 2020 |
| Fareham Power Limited | Administrative & support | 2018 |
| Faresal Ltd | Wholesale & retail | 2026 |
| Farhantariq Ltd | Manufacturing | 2025 |
| Farmcote Estates Limited | Real estate | 2001 |
| Farmcote Flowers Ltd | Wholesale & retail | 2019 |
| Farmcote Forestry Limited | Professional & scientific | 2013 |
| Farmland CHICKENS1 Ltd | Wholesale & retail | 2026 |
| Farmnig Ltd Ltd | Health & social care | 2025 |
| Farmware Agri-Exports(Uk) Limited | Wholesale & retail | 2012 |
| Farnitan International Ltd | Wholesale & retail | 2024 |
| Farquharson Capital Holdings Limited | Financial services | 2023 |
| Farys Cleaning Ltd | Administrative & support | 2022 |
| Farys Consulting Ltd | Construction | 2019 |
| Farys Solutions Ltd | Construction | 2024 |
| Farzana & Rahman Consultancy Ltd | Information & communication | 2012 |
| Fashion With Paul Limited | Information & communication | 2025 |
| Fashionfleet Ltd | Wholesale & retail | 2024 |
| Fast & Clean by Elijah Ltd | Wholesale & retail | 2024 |
| Fast & Sure Ltd | Transport & logistics | 2015 |
| Fast and Reliable Couriers UK Ltd | Transport & logistics | 2025 |
| Fast Care Services Ltd | Wholesale & retail | 2017 |
| Fast FIX Heating & Plumbing Ltd | Construction | 2019 |
| Fast Line Distribution Limited | Wholesale & retail | 2012 |
| Fast Property Services Limited | Real estate | 2024 |
| Fast Solutions Landscaping Limited | Professional & scientific | 2026 |
| Fast Track Tours Ltd | Administrative & support | 2009 |
| Fast Trak Trading Limited | Wholesale & retail | 2015 |
| Fast Transport Limited | Transport & logistics | 2026 |
| Fast Ventures Limited | Manufacturing | 2020 |
| Fastdrivve Movers Ltd | Transport & logistics | 2025 |
| Fastener Testing Services Limited | Professional & scientific | 2021 |
| Fasteners First Ltd | Manufacturing | 2021 |
| Fastgrow Garden Solutions Ltd | Wholesale & retail | 2015 |
| Fastina Cares Ltd | Professional & scientific | 2020 |
| Fastlane Freight Ltd | Transport & logistics | 2025 |
| Fastmay Development Co. Limited | Construction | 1988 |
| Fastrac Profiles Limited | Manufacturing | 2004 |
| Fasttrack Transport Ltd | Transport & logistics | 2026 |
| FASTTRACK24 Limited | Transport & logistics | 2023 |
| Fastway Bedrooms & Kitchens Ltd | Construction | 2022 |
| FAT Tomato Limited | Financial services | 2015 |
| Fateel Limited | Health & social care | 2022 |
| Fatima Traders Ltd | Wholesale & retail | 2025 |
| Fatty's Bait and Fishing Tackle Limited | Wholesale & retail | 2010 |
| Fav-Agbons International Limited | Wholesale & retail | 2017 |
| Favour and Victory Limited | Wholesale & retail | 2017 |
| Favour's Tiney Home Nursery Ltd | Education | 2026 |
| Favoured Genius Ltd | Wholesale & retail | 2022 |
| Fawa Group Ltd | Information & communication | 2026 |
| Faxton Holdings Ltd | Financial services | 2022 |
| Faxton Limited | Real estate | 2004 |
| FAY Property Limited | Real estate | 2021 |
| FAY Trading Limited | Real estate | 2021 |
| Fayaz Park Village Store Ltd | Wholesale & retail | 2025 |
| Fayolle Limited | Wholesale & retail | 1977 |
| Fazbs Ltd | Wholesale & retail | 2026 |
| Fazeelat Bibi Ltd | Wholesale & retail | 2025 |
| Fazeelat Garments Limited | Wholesale & retail | 2025 |
| FB Arrangement Ltd | Wholesale & retail | 2025 |
| FB Global Plumbing Group Holdings Limited | Manufacturing | 2017 |
| FBA Devs Ltd | Real estate | 2024 |
| FBC Manby Bowdler (Midlands) Limited | Professional & scientific | 2024 |
| FBC Manby Bowdler (Midlands) Trust Corporation Limited | Professional & scientific | 2025 |
| FBC Manby Bowdler LLP | | 2007 |
| FBC Nominees Limited | Professional & scientific | 1992 |
| FC Brothers Limited | Hospitality | 2024 |
| FCC Trading Ltd | Wholesale & retail | 2026 |
| FCH1 (UK) Development Limited | Construction | 2025 |
| FD Metals Ltd | Wholesale & retail | 2024 |
| Fd&M Construction Ltd | Construction | 2019 |
| Fdalazaruk Ltd | Transport & logistics | 2024 |
| Fearnley Morris Limited | Professional & scientific | 2006 |
| Feast UK Ltd | Wholesale & retail | 2004 |
| Feather and Quartz Ltd | Wholesale & retail | 2025 |
| Featherstone Carpentry Ltd | Manufacturing | 2019 |
| Featherstone Fencing Limited | Construction | 2012 |
| Featherstone Fish and Pizza Limited | Hospitality | 2025 |
| Featherstone Housing Ltd | Real estate | 2025 |
| Featherstone Management Consultancy Limited | Professional & scientific | 2008 |
| Featherstone Plumbing & Heating Ltd | Construction | 2019 |
| FED Couture Limited | Manufacturing | 2024 |
| Fedak Logistics Ltd | Transport & logistics | 2025 |
| Fedali Properties Ltd | Real estate | 2022 |
| Fedcam Ltd | Real estate | 2022 |
| Federal Aerospace Engineering Limited | Manufacturing | 2009 |
| Fedrimine Ltd | Transport & logistics | 2019 |