| Fraghaus Ltd | Wholesale & retail | 2025 |
| Fraglands UK Limited | Wholesale & retail | 2025 |
| Fragrance & Beauty Creations Limited | Wholesale & retail | 2006 |
| Fragrance & Beauty Limited | Wholesale & retail | 2020 |
| Fragrance Acquisitions Limited | Financial services | 2005 |
| Fragrance Factory Ltd | Wholesale & retail | 2026 |
| Fragrance Oils (International) Limited | Manufacturing | 1974 |
| Fragrance Oils Limited | Professional & scientific | 1994 |
| Fragrance Point Ltd | Wholesale & retail | 2020 |
| Fragrance Sisters Ltd | Wholesale & retail | 2021 |
| Fragrance Warehouse Ltd | Wholesale & retail | 2023 |
| Fragranza Ltd | Wholesale & retail | 2020 |
| Fragro International Limited | Wholesale & retail | 2010 |
| Fraiche Aesthetics & Skincare Ltd | Other services | 2023 |
| Fraley Tutors Ltd | Education | 2021 |
| Frame & Build for Services Ltd | Other services | 2024 |
| Frame Locker Limited | Wholesale & retail | 2020 |
| Frame the Game Limited | Manufacturing | 2024 |
| Frameandfont Limited | Wholesale & retail | 2025 |
| Framed Digital Ltd | Wholesale & retail | 2026 |
| Frames Didsbury Ltd | Wholesale & retail | 2026 |
| Frames Killeen Ltd | Professional & scientific | 2024 |
| Framewave Limited | Professional & scientific | 2025 |
| Framewood Media Limited | Information & communication | 2020 |
| Frameworks Social Enterprise CIC | Administrative & support | 2019 |
| Frameworks Training and Safety Services Ltd | Administrative & support | 2017 |
| Framing Manchester Ltd | Manufacturing | 2012 |
| Framos (Fabrications) Limited | Manufacturing | 1987 |
| Frampton Surgery Limited | Health & social care | 2021 |
| Fran Baker Limited | Information & communication | 2013 |
| Franangel Ltd | Wholesale & retail | 2023 |
| Franbridge Group Ltd | Wholesale & retail | 2026 |
| France Big Rooster Mining Co. Ltd | Manufacturing | 2023 |
| France Fruitfulness International Ltd | Extraterritorial | 2025 |
| France Line International Transport Limited | Transport & logistics | 1980 |
| France Property Group Ltd | Construction | 2025 |
| Frances Walker Properties Limited | Hospitality | 2013 |
| Francesca Rocco Ltd | Health & social care | 2026 |
| Francesco's Restaurant Limited | Hospitality | 2004 |
| Franchise Collective (the Strand) Limited | Wholesale & retail | 2025 |
| Franchise Collective Holdings UK Limited | Financial services | 2025 |
| Franchise Collective Opco Limited | Wholesale & retail | 2025 |
| Franchise Collective Propco Limited | Real estate | 2025 |
| Franchise Investments Heating Limited | Construction | 2014 |
| Franchises & Marketing Ltd | Professional & scientific | 2021 |
| Francis Bradley Ltd | Transport & logistics | 2025 |
| Francis Chan Property Investment Ltd | Real estate | 2023 |
| Francis Connor Ltd | Health & social care | 2024 |
| Francis Dillon Limited Partnership | | 2003 |
| Francis Fire Protection Ltd | Construction | 2023 |
| Francis Kirk & SON Limited | Wholesale & retail | 1945 |
| Francis-Moira Products Limited | Wholesale & retail | 2024 |
| Francisco Enterprises Limited | Other services | 2004 |
| Francisco Foodstuff and General Trading Ltd | Wholesale & retail | 2021 |
| Franco Desserts Ltd | Hospitality | 2025 |
| Franco Fire Detection Ltd | Manufacturing | 1985 |
| Franco N Delio Ltd | Hospitality | 2026 |
| Franco Pisani Ltd | Manufacturing | 2016 |
| Franconia Consulting Limited | Information & communication | 2014 |
| Frangogrill&Kebab Ltd | Hospitality | 2025 |
| Franhas LLP | | 2024 |
| Frank Beirne Fabrics Limited | Manufacturing | 1997 |
| Frank Crowther Ltd | Construction | 2015 |
| Frank Financial Ltd | Financial services | 2024 |
| Frank FK Reomvals Limited | Construction | 2025 |
| Frank FM Ltd | Administrative & support | 2023 |
| Frank Knowles and Company Limited | Professional & scientific | 1947 |
| Frank Logistics Ltd | Transport & logistics | 2026 |
| Frank Management Limited | Professional & scientific | 2003 |
| Frank Marshall (Garswood) Limited | Real estate | 2008 |
| Frank O'Gara & Sons Limited | Construction | 1995 |
| Frank O'Hara Transport Services Ltd | Transport & logistics | 2016 |
| Frank Pine Limited | Financial services | 2018 |
| Frank Pine Trustee Limited | Professional & scientific | 2021 |
| Frank Plumbing Services Ltd | Construction | 2025 |
| Frank Shepley (Engineers) Limited | | 1948 |
| Frank Supports Limited | Health & social care | 2019 |
| Frank Wellness Ltd | Health & social care | 2025 |
| Frankab Limited | Extraterritorial | 2025 |
| Franke Foodservice Systems UK Limited | Manufacturing | 1963 |
| Franke Sissons Pension Trustees Limited | Financial services | 1992 |
| Frankel Property Holding (10) Ltd | Real estate | 2023 |
| Frankel Property Holding (11) Ltd | Real estate | 2024 |
| Frankel Property Holding (12) Ltd | Real estate | 2024 |
| Frankel Property Holding (3) Ltd | Real estate | 2017 |
| Frankel Property Holding (4) Ltd | Real estate | 2017 |
| Frankel Property Holding (5) Ltd | Real estate | 2018 |
| Frankel Property Holding (6) Ltd | Real estate | 2018 |
| Frankel Property Holding (9) Ltd | Real estate | 2023 |
| Frankel Property Holding 2 Limited | Real estate | 2016 |
| Frankel Property Holding Limited | Real estate | 2016 |
| Frankel Property Holding Reading 2 Ltd | Real estate | 2026 |
| Frankel Property Holding Reading Ltd | Real estate | 2026 |
| Frankenbike Automotive Engineering Limited | Wholesale & retail | 2024 |
| Frankenthal/Burghaun LP | | 2005 |
| Frankie Goes to Bollywood Leisure Limited | Hospitality | 2004 |
| Frankie Hull Ltd | Wholesale & retail | 2025 |
| Frankies Fish Bar Limited | Hospitality | 2020 |
| Frankies PVT Ltd | Hospitality | 2024 |
| Frankies Toasties MCR Ltd | Hospitality | 2025 |