| Forshaw Construction Ltd | Construction | 2021 |
| Forshaw Developments Ltd | Construction | 2015 |
| Forshaw Investments Ltd | Real estate | 2013 |
| Forshaw Land & Property Group Ltd | Construction | 2008 |
| Fort Care Services Limited | Health & social care | 2024 |
| Fort Housing Solutions Limited | Real estate | 2024 |
| Fort Leonard Ltd | Administrative & support | 2013 |
| Fortalice Limited | Health & social care | 2008 |
| Forte Glass Ltd | Other services | 2021 |
| Fortheplot DUO Ltd | Information & communication | 2023 |
| Fortis Group Consultancy Ltd | Information & communication | 2021 |
| Fortis Vita Limited | Professional & scientific | 2019 |
| Fortitude Equip Gym Installations and Servicing Ltd | Construction | 2023 |
| Fortitude Global Living Ltd | Real estate | 2021 |
| Fortitudo NW Ltd | Construction | 2023 |
| Fortnight Limited | Other services | 2016 |
| Fortress Fasteners Ltd | Wholesale & retail | 2010 |
| Fortress LAB Limited | Information & communication | 2015 |
| Fortress Secured Management Limited | Construction | 2025 |
| Fortuna Bar and Restaurant Ltd | Hospitality | 2010 |
| Fortuna Catering & Events Ltd | Hospitality | 2016 |
| Fortune Cookie Takeaway Ltd | Hospitality | 2019 |
| Fortune Properties (UK) Limited | Real estate | 2006 |
| Fortune United UK Ltd | Hospitality | 2026 |
| Fortunefam Cool Ltd | Other services | 2025 |
| Forward AS One Church of England Multi Academy Trust | Education | 2012 |
| Forward Care Services Ltd | Health & social care | 2023 |
| Forward-It Ltd | Information & communication | 2022 |
| FOS Digital Limited | Administrative & support | 2016 |
| Fostering Solutions (Hitchin) Limited | Health & social care | 2002 |
| Fostering Solutions (Northern) Limited | Health & social care | 2005 |
| Fostering Solutions Limited | Health & social care | 2000 |
| Fosters Care Ltd | Health & social care | 2026 |
| Found First Digital Limited | Professional & scientific | 2023 |
| Found Recruitment Solutions Ltd | Administrative & support | 2023 |
| Founder Ventures Ltd | Information & communication | 2022 |
| Fountain ARK Limited | Financial services | 2019 |
| Four ALL Seasons Caravans Limited | Other services | 2001 |
| Four Brewery CRT Residents Ltd | Real estate | 2024 |
| Four Candles Investments Ltd | Financial services | 2020 |
| Four Circule Limited | Wholesale & retail | 2024 |
| Four Eyes Logistics Ltd | Transport & logistics | 2023 |
| Four Fortunate Ltd | Manufacturing | 2025 |
| Four Projects Ltd | Financial services | 2017 |
| Four Recruitment Limited | Administrative & support | 2011 |
| Four Rings Motors NW Ltd | Wholesale & retail | 2022 |
| Four Rivers Clothing Ltd | Wholesale & retail | 2025 |
| Four Seasons Conservatories U.K. Limited | Manufacturing | 2000 |
| Four Seasons Marple Ltd | Hospitality | 2025 |
| Four Seasons North West Ltd | Wholesale & retail | 2025 |
| Four Wall Housing Ltd | Real estate | 2022 |
| Fourfold Holdings Limited | Financial services | 2026 |
| Fourfold Investments Limited | Real estate | 2026 |
| Fourgates Luxury Beds and Interiors Ltd | Wholesale & retail | 2025 |
| Fouronethreegroup Limited | Information & communication | 2023 |
| Fourpoint Solutions Ltd | Information & communication | 2025 |
| Fourteen (North West) Limited | Information & communication | 2006 |
| Fourtex DRY Lining Services Ltd | Construction | 2011 |
| Fourtyfourproperty Limited | Real estate | 2025 |
| FOX Roofing Services Limited | Construction | 2022 |
| Foxdenton LLP | | 2012 |
| Foxfrazer Ltd | Professional & scientific | 2014 |
| Foxtrot PVT Ltd | Wholesale & retail | 2025 |
| Foxx River Ltd | Manufacturing | 2016 |
| Foxy Desserts Limited | Wholesale & retail | 2024 |
| Fozdar Optix Ltd | Health & social care | 2019 |
| Fozy Developments Limited | Construction | 2021 |
| Fozy Enterprise Ltd | Wholesale & retail | 2019 |
| Fozy Properties Ltd | Real estate | 2019 |
| FP Electronics Limited | Wholesale & retail | 2023 |
| FP Premier Ltd | Wholesale & retail | 2024 |
| Fpma Limited | Health & social care | 2025 |
| Fpverse Ltd | Information & communication | 2025 |
| FR Restaurants Ltd | Hospitality | 2024 |
| FRA Global Ltd | Information & communication | 2025 |
| FRA North West Limited | Financial services | 2023 |
| Fracshon Ltd | Professional & scientific | 2025 |
| Fractory Ltd | Information & communication | 2019 |
| Fragola Digital Limited | Information & communication | 2021 |
| Fragrance Wholesale International Ltd | Wholesale & retail | 2023 |
| Fragrance International Limited | Manufacturing | 2023 |
| Fragrance National Ltd | Manufacturing | 2025 |
| Fragrance SK Ltd | Wholesale & retail | 2025 |
| Fragrance Wardrobe Limited | Wholesale & retail | 2026 |
| Frame IT by Lesley Ltd | Professional & scientific | 2024 |
| Framelines Publishing Limited | Professional & scientific | 2021 |
| Framing Madness Manufacturing Ltd | Manufacturing | 2001 |
| Frana Wear Limited | Wholesale & retail | 2018 |
| France Properties Ltd | Real estate | 2024 |
| Francis Norton Limited | Arts & recreation | 2009 |
| Francisco Tiler Ltd | Construction | 2013 |
| Franco's Bakery 2003 Limited | Manufacturing | 2003 |
| Franglo Ltd | Information & communication | 2018 |
| Franguitos Bolton Limited | Hospitality | 2023 |
| Frank & GUS Co. Limited | Other services | 2020 |
| Frank Hulton Motor Engineers Limited | Wholesale & retail | 2005 |
| Frank Oakley Developments Limited | Real estate | 2022 |
| Frank Structures Ltd | Construction | 2022 |
| Frank Wills Recruitment Ltd | Administrative & support | 2016 |
| Frankford International Limited | Other services | 1994 |