| From Estates Ltd | Real estate | 2021 |
| From House to Home Interiors Ltd | Professional & scientific | 2024 |
| From the Mill Theatre Company Ltd | Arts & recreation | 2016 |
| From the Offset Ltd | Wholesale & retail | 2022 |
| FROM25 Limited | Financial services | 2025 |
| Fronline Sales & Distribution Limited | Wholesale & retail | 2026 |
| Fronolau House Management Company Limited | Real estate | 2021 |
| Front Door Properties and Maintenance Ltd | Real estate | 2024 |
| Front Door Properties Management UK Limited | Real estate | 2024 |
| Front Foot Media Ltd | Information & communication | 2020 |
| Front Line Fit Ltd | Arts & recreation | 2010 |
| Front ROW Claims Ltd | Financial services | 2011 |
| Frontal Music Group Ltd | Information & communication | 2025 |
| Frontbench Coaching Limited | Other services | 2018 |
| Fronterra Ltd | Arts & recreation | 2023 |
| Frontier Events Ltd | Administrative & support | 2015 |
| Frontier for International Services Limited | Extraterritorial | 2026 |
| Frontier Peak Advisory Group Ltd | Extraterritorial | 2026 |
| Frontier Works Ltd | Health & social care | 2025 |
| Frontiers Holding Ltd | Financial services | 2018 |
| Frontiers International Services Limited | Wholesale & retail | 2019 |
| Frontline Business Solutions Limited | Professional & scientific | 2026 |
| Frontline Cleaners Express Ltd | Administrative & support | 2023 |
| Frontline Distribution International UK Limited | Wholesale & retail | 2025 |
| Frontline Finance Solutions Limited | Financial services | 2009 |
| Frontline Fit Global Ltd | Arts & recreation | 2014 |
| Frontline Resources Limited | Information & communication | 2018 |
| Frontlinefit Camp Ltd | Arts & recreation | 2019 |
| Frontpark Limited | Wholesale & retail | 1988 |
| Frontrou Limited | Wholesale & retail | 2019 |
| Frontstep Manchester | Hospitality | 2020 |
| Frontstep Staffing and Support Services Ltd | Administrative & support | 2019 |
| Froom Mortgages Limited | Financial services | 2024 |
| Froreal Beauty Ltd | Wholesale & retail | 2025 |
| Frosch Learning Limited | Other services | 2018 |
| Frosei Cosmetics Ltd | Wholesale & retail | 2025 |
| Frost Valley Capital Holdings Ltd | Extraterritorial | 2026 |
| Frosted Peak Capital Management Ltd | Extraterritorial | 2026 |
| Frosts Group Limited | Financial services | 2018 |
| Frosts Pharmacy Ltd | Wholesale & retail | 2008 |
| Frosty-B Ltd | Hospitality | 2024 |
| Froxmer Properties (NW) Limited | Real estate | 2026 |
| Froya Limited | Agriculture & fishing | 2001 |
| Froyle House (Leases) Limited | Real estate | 2014 |
| Froyoo Ltd | Extraterritorial | 2021 |
| Frozen Horizon Limited | Wholesale & retail | 2025 |
| Frozen Lemon LAB Ltd | Wholesale & retail | 2024 |
| Frpa Ltd | Information & communication | 2018 |
| FRR Investments Limited | Real estate | 2018 |
| Frsr Intermediates Limited | Professional & scientific | 2020 |
| Frsr Ltd | Administrative & support | 2017 |
| Frst Class Management Ltd | Other services | 2025 |
| Fruidel Office Groceries Limited | Hospitality | 2021 |
| Fruit & Hive Ltd Limited | Wholesale & retail | 2025 |
| Fruit Consulting Limited | Information & communication | 2014 |
| Fruit Market Management Company Limited | Households | 2021 |
| Fruit Pieces Limited | Wholesale & retail | 2023 |
| Fruitful Bough Ltd | Information & communication | 2026 |
| Fruithappy Limited | Wholesale & retail | 2025 |
| Fruits PIE Limited | Wholesale & retail | 2024 |
| Fruity Enterprises Ltd | Administrative & support | 2023 |
| Fruity Lead Ltd | Professional & scientific | 2025 |
| Frutta Dolce UK Ltd | Hospitality | 2021 |
| FRV Recruitment Ltd | Administrative & support | 2023 |
| Frvapes Limited | Wholesale & retail | 2021 |
| Frwrd Accounting & Advice Ltd | Professional & scientific | 2022 |
| Fry'D Manchester Ltd | Hospitality | 2024 |
| Fryday Consulting Limited | Professional & scientific | 2016 |
| Frydays Estate Ltd | Real estate | 2025 |
| Frydeck Ltd | Wholesale & retail | 2025 |
| Fryett's Fabrics Limited | Wholesale & retail | 2006 |
| Fryett's Holdings Limited | Professional & scientific | 2009 |
| Fryin Limited | Hospitality | 2025 |
| FS Auto Body Ltd | Wholesale & retail | 2022 |
| FS Commercial Group Ltd | Wholesale & retail | 2024 |
| FS Consulting Limited | Professional & scientific | 2024 |
| FS Design House Ltd. | Construction | 2018 |
| FS Holdings Ltd | Other services | 2022 |
| FS Mensah Ltd | Arts & recreation | 2017 |
| FS Online Services Limited | Wholesale & retail | 2026 |
| FS Plus Limited | Professional & scientific | 2023 |
| FS Pro Traders Ltd | Wholesale & retail | 2018 |
| FS Properties (MCR ) Ltd | Real estate | 2018 |
| FS Services Ltd | Other services | 2024 |
| FS Training and Consultancy Limited | Information & communication | 2019 |
| FS VA Services Ltd | Administrative & support | 2025 |
| FSA Group Ltd | Real estate | 2024 |
| FSA Private Limited | Wholesale & retail | 2025 |
| FSA Services Ltd | Education | 2023 |
| Fsbi Accountants UK Limited | Professional & scientific | 2023 |
| FSC Consulting Limited | Construction | 1996 |
| FSC MCR Limited | Hospitality | 2023 |
| FSD Foods Ltd | Wholesale & retail | 2018 |
| FSD Services Ltd | Wholesale & retail | 2018 |
| FSD Transport Limited | Transport & logistics | 2025 |
| FSE Consulting Ltd | Manufacturing | 2022 |
| FSE Group Holdings Ltd | Financial services | 2024 |
| FSE1 Ltd | Administrative & support | 2024 |
| FSG (3) Limited | Construction | 2022 |
| FSG (Appleton Cross) Developments Limited | Construction | 2021 |