| Feerick and Associates Limited | Administrative & support | 2003 |
| FEL Diamond Cleaning Ltd | Administrative & support | 2023 |
| Felicia Ltd | Education | 2023 |
| Felicity BEE Specialist Hair Ltd | Other services | 2018 |
| Felicity Solutions Ltd | Professional & scientific | 2022 |
| FENCES4U Ltd | Construction | 2021 |
| Fencing Mart Limited | Manufacturing | 2012 |
| Fency That Ltd | Construction | 2025 |
| Fenex Properties Ltd. | Real estate | 2021 |
| Fenrir Property Ltd | Real estate | 2025 |
| Fenrir Trading Ltd | Wholesale & retail | 2022 |
| Fera Collective Ltd | Professional & scientific | 2026 |
| Fergs-World Ltd | Wholesale & retail | 2020 |
| Ferlyn Estates Limited | Real estate | 2012 |
| Fern Lodge Residents Limited | Households | 2024 |
| Fern Properties Ltd | Real estate | 2019 |
| Fern Side Holdings Limited | Professional & scientific | 2016 |
| Fernandes Empire Ltd | Transport & logistics | 2023 |
| Fernando IMR Ltd | Construction | 2023 |
| Ferndale Joinery Limited | Manufacturing | 1993 |
| Ferndale Motors Ltd | Wholesale & retail | 2018 |
| Ferney Field Development Limited | Households | 2025 |
| Fernlea Developments Ltd | Construction | 2016 |
| Ferns Consultancy Ltd | Professional & scientific | 2023 |
| Ferns Mclean Limited | Construction | 2018 |
| Ferris O’Hara Travel Services Limited | Administrative & support | 2024 |
| FES North Limited | Health & social care | 2023 |
| FES North West Limited | Health & social care | 2008 |
| Fesak Commercial Enterprises Ltd | Health & social care | 2018 |
| Festa Italiana Limited | Other services | 2020 |
| FF Autocare Ltd | Wholesale & retail | 2025 |
| FF MOT Ltd | Professional & scientific | 2025 |
| FF Motor House Ltd | Wholesale & retail | 2026 |
| FFB Assets Limited | Real estate | 2022 |
| FFF Nurul Hoque Limited | Arts & recreation | 2025 |
| Ffion Optical Limited | Health & social care | 2024 |
| Ffraidproperty Ltd | Households | 2025 |
| FG Electrical Ltd | Construction | 2019 |
| FH Estate Management Company Limited | Households | 2004 |
| FH Healthcare Limited | Professional & scientific | 2009 |
| FH Optics Ltd | Health & social care | 2023 |
| FH Properties NW Limited | Real estate | 2025 |
| FH Yousufzai Ltd | Wholesale & retail | 2025 |
| FHM Investments Ltd | Other services | 2020 |
| FHR Healthcare Limited | Wholesale & retail | 2026 |
| FHS Pharma Ltd | Professional & scientific | 2017 |
| FIA NW Ltd | Financial services | 2025 |
| Fiadh Consultancy Limited | Professional & scientific | 2020 |
| Fiasco Search Ltd | Information & communication | 2009 |
| Fibre Textile Limited | Manufacturing | 2019 |
| Fibrocell Limited | Construction | 1961 |
| Field Strategic Marketing Limited | Professional & scientific | 2014 |
| Fielding Roofing Ltd | Construction | 2025 |
| Fieldmasters Ltd | Construction | 1997 |
| Fifth Oldham Ltd | Hospitality | 2025 |
| FIFTY5INTERIORS Ltd | Professional & scientific | 2024 |
| Fighting Fish Ltd | Information & communication | 2024 |
| Figjam Clothing Limited | Wholesale & retail | 2010 |
| Fiimy Limited | Other services | 2018 |
| Filler Wholesale (UK) Ltd | Health & social care | 2022 |
| Filtrapools Ltd | Construction | 2017 |
| Financial Controls Limited | Information & communication | 1998 |
| Financial Expert Solutions UK Ltd | Professional & scientific | 2025 |
| Financial Health Group Ltd | Administrative & support | 2021 |
| Financial Referrals Limited | Real estate | 2009 |
| Fincrest Consulting Limited | Public administration | 2026 |
| Find ME a Home Limited | Real estate | 2005 |
| Findings Ltd. | Professional & scientific | 2010 |
| Fine Key Properties Ltd | Real estate | 2025 |
| Fine Line Commercial Bodies Limited | Manufacturing | 2022 |
| Fine Shooting Accessories Ltd | Manufacturing | 2019 |
| Fine Strokes Aesthetics Limited | Other services | 2022 |
| Fine Strokes Microblading Ltd | Other services | 2019 |
| Fineline B&K Holdings Ltd | Financial services | 2022 |
| Finesse International Ltd | Information & communication | 2025 |
| Finest Drinks Ltd | Wholesale & retail | 2021 |
| Finhance Ltd | Wholesale & retail | 2020 |
| Finishline Print Finishers Limited | Manufacturing | 1998 |
| Finmark Assist Ltd | Extraterritorial | 2025 |
| Finnerty Investments Limited | Real estate | 2020 |
| Finnington Limited | Construction | 1989 |
| Finsai PAY Limited | Information & communication | 2024 |
| Finsbury Motor Group Limited | Wholesale & retail | 2025 |
| Fintech Financials Ltd | Professional & scientific | 2024 |
| Fintech Technology Ltd | Information & communication | 2025 |
| FIR Lane 1964 Limited | Extraterritorial | 2014 |
| Firbank Mews (Royton) Management Company Limited | Households | 2013 |
| Firbank Property Management Limited | Real estate | 2017 |
| Fire & Forest Ltd | Other services | 2026 |
| Fire and Risk Solutions Ltd | Administrative & support | 2023 |
| Fire and Spice Wigan Ltd | Hospitality | 2026 |
| Fire Extinguishers Near ME Limited | Public administration | 2023 |
| Fire Safety Services (FSS) Ltd | Administrative & support | 2001 |
| Firetone Limited | Construction | 2021 |
| First 4 Beds & Home Furnishings Ltd | Wholesale & retail | 2016 |
| First 4 Recruitment Ltd | Administrative & support | 2017 |
| First Call 24/7 Locksmith Ltd | Construction | 2026 |
| First Choice Contractors Ltd | Construction | 2025 |
| First Choice Homes Limited | Extraterritorial | 2019 |
| First Choice Investments Limited | Real estate | 2016 |