| FAI Developments Ltd | Construction | 2022 |
| FAI Group Holding Ltd | Financial services | 2022 |
| FAI KEE (Wholesale) Meats Limited | Transport & logistics | 2008 |
| FAI Property Group Limited | Professional & scientific | 2020 |
| FAI Property Management UK Ltd | Real estate | 2022 |
| Faidhat Najd Ltd | Wholesale & retail | 2023 |
| Failsworth Antiques Ltd | Wholesale & retail | 2023 |
| Failsworth Balti House Ltd | Hospitality | 2017 |
| Failsworth Boardman Contracts Ltd | Wholesale & retail | 1994 |
| Failsworth Electrical (NW) Limited | Construction | 2018 |
| Failsworth Electrical Limited | Construction | 2002 |
| Failsworth Electrical Supplies Ltd | Other services | 2018 |
| Failsworth House Services Limited | Construction | 2018 |
| Failsworth Motors Ltd | Wholesale & retail | 2026 |
| Failsworth Power Solutions Limited | Construction | 2020 |
| Failsworth Properties Limited | Real estate | 2001 |
| Failsworth Self Storage NW Ltd | Administrative & support | 2019 |
| Failsworth Storage Ltd | Administrative & support | 2025 |
| Failsworth Treasures Ltd | Wholesale & retail | 2023 |
| Faiq Ecom Ltd | Wholesale & retail | 2025 |
| Faiq Smile Solutions Ltd | Health & social care | 2026 |
| Fair Brows Ltd | Other services | 2023 |
| Fair Construction Ltd | Extraterritorial | 2022 |
| Fair Futures CIC | Education | 2020 |
| Fair Meadow Technologies Ltd | Wholesale & retail | 2025 |
| Fair Resale Limited | Wholesale & retail | 2025 |
| Fair Trading Online Ltd | Wholesale & retail | 2023 |
| Fair Utilities Ltd | Information & communication | 2024 |
| Fair View (NW) Ltd | Hospitality | 2023 |
| Fair View Accounting & Tax Services Ltd | Professional & scientific | 2019 |
| Fairacre (Ashton) Car Park Limited | Other services | 2015 |
| Fairben Ltd | Real estate | 2025 |
| Fairbrick Ltd | Real estate | 2026 |
| Faircare Solutions Ltd | Wholesale & retail | 2023 |
| Fairclaim Helpline Ltd | Professional & scientific | 2019 |
| Fairclough Commercial Management Limited | Professional & scientific | 2024 |
| Fairfax Resurfacing Limited | Construction | 2017 |
| Fairfield Corporate Management Ltd | Professional & scientific | 2021 |
| Fairfield Education and Training Ltd | Education | 2020 |
| Fairfield Environment Trust | Professional & scientific | 2013 |
| Fairfield Golf Ltd | Hospitality | 2016 |
| Fairfield High School for Girls | Education | 2011 |
| Fairfield Medical Limited | Real estate | 2012 |
| Fairfield Medical Services Limited | Health & social care | 2026 |
| Fairfield Park Residents Company Limited | Households | 2004 |
| Fairfield Property Developments Limited | Construction | 2017 |
| Fairfields Management Company Limited | Households | 2008 |
| Fairholme Park Manchester Limited | Other services | 2008 |
| Fairholme Structures Limited | Professional & scientific | 2020 |
| Fairhursts Architects Limited | Professional & scientific | 1992 |
| Fairies of Advertising Ltd | Professional & scientific | 2025 |
| Fairlane Trading Ltd | Wholesale & retail | 2016 |
| Fairline Blinds UK Ltd | Construction | 2022 |
| Fairline Properties Limited | Real estate | 2026 |
| Fairlyn Properties Ltd | Real estate | 2022 |
| Fairmanor Investments 1 Ltd | Professional & scientific | 2018 |
| Fairmanor Investments Ltd | Professional & scientific | 2003 |
| Fairmark Ltd | Wholesale & retail | 2021 |
| Fairmart Kalavara Limited | Hospitality | 2024 |
| Fairmitre Limited | Construction | 1981 |
| Fairmond Group Ltd | Real estate | 2025 |
| Fairmont Corporate Limited | Administrative & support | 2017 |
| Fairmont Recruitment Limited | Administrative & support | 2018 |
| Fairmont Tech Systems Ltd | Information & communication | 2025 |
| Fairplay Brands Limited | Other services | 2020 |
| Fairplay Retail Limited | Wholesale & retail | 2025 |
| Fairpricetraders Ltd | Wholesale & retail | 2019 |
| Fairtrade Wholesale (UK) Limited | Wholesale & retail | 2002 |
| Fairview Legal Services Ltd | Professional & scientific | 2023 |
| Fairview Psychology Services Ltd | Education | 2017 |
| Fairview Standard Projects Ltd | Construction | 2024 |
| Fairville Ltd | Wholesale & retail | 2021 |
| Fairway Decorating Services Limited | Construction | 2003 |
| Fairway Investments Ltd | Real estate | 2004 |
| Fairway MA Limited | Hospitality | 2018 |
| Fairway Situ Ltd | Hospitality | 2025 |
| Fairwayr Limited | Manufacturing | 2026 |
| Fairways Capital Limited | Financial services | 2025 |
| Fairways Properties Ltd | Real estate | 2021 |
| Fairweather Healthcare Consultancy Ltd | Health & social care | 2025 |
| Fairwoods (Preston) Ltd | Professional & scientific | 2015 |
| Fairword Limited | Real estate | 2024 |
| Fairy Beauty & Co Ltd | Other services | 2023 |
| Fairy Night Fashion Ltd | Professional & scientific | 2021 |
| Fairy Trends Ltd | Wholesale & retail | 2021 |
| Fairyland Management Ltd | Construction | 2024 |
| Fairytale Brides Limited | Wholesale & retail | 2005 |
| Fairywell Homes Ltd | Real estate | 2024 |
| Faisal & Rachel Munif Ltd | Real estate | 2016 |
| Faisal Aladad for Trading Ltd | Wholesale & retail | 2024 |
| Faisal ALI Bakhsh for Investment Ltd | Other services | 2025 |
| Faisal Mahmood Pharma Ltd | Health & social care | 2023 |
| Faith and Sons Limited | Manufacturing | 2013 |
| Faith Driven Real Estates Ltd | Real estate | 2024 |
| Faith Inn Ltd | Real estate | 2023 |
| Faith Inter Training Ltd. | Education | 2016 |
| Faith KIT Care Service Limited | Health & social care | 2026 |
| Faith.Com Online Limited | Wholesale & retail | 2021 |
| Faithacle Limited | Wholesale & retail | 2025 |
| Faitheestyles Ltd | Other services | 2024 |