| Faltaous Medical Services Limited | Health & social care | 2018 |
| Family Funeral Services Limited | Extraterritorial | 1975 |
| Family Plaice Limited | Hospitality | 2025 |
| Fantasy Kitchens Ltd | Manufacturing | 2025 |
| Faraday Systems Ltd | Professional & scientific | 2025 |
| Farah PH Ltd | Health & social care | 2026 |
| Faraz Fish & FRY Limited | Hospitality | 2025 |
| Farco Limited | Information & communication | 2008 |
| Farebrother Funeral Services Limited | Extraterritorial | 1973 |
| Farewill Funerals Limited | Other services | 2019 |
| Farewill Legal Services Limited | Professional & scientific | 2018 |
| Farewill Ltd. | Information & communication | 2015 |
| Farewill Trustees Limited | Professional & scientific | 2018 |
| Farhan Nawaz Pharma Limited | Professional & scientific | 2011 |
| Farismere Properties Limited | Extraterritorial | 1972 |
| Farley Lane Investments Limited | Real estate | 2022 |
| Farncote Limited | Professional & scientific | 2017 |
| Farrelly Building Services Limited | Construction | 2015 |
| Fasha Trading Ltd | Health & social care | 2024 |
| Fast Track Assessments Limited | Administrative & support | 2025 |
| Fasttrack Construction (Derby) Limited | Wholesale & retail | 1998 |
| Fasutofudo Sushi Limited | Hospitality | 2024 |
| FAT KEE Limited | Hospitality | 2011 |
| Faulkes Properties Limited | Real estate | 1997 |
| Faythe Holdings Ltd | Arts & recreation | 2020 |
| FAZ Midlands Limited | Hospitality | 2024 |
| Fazeley Cantonese Takeaway Ltd | Hospitality | 2019 |
| Featherglade Limited | Extraterritorial | 1988 |
| Federici Property Ltd | Real estate | 2022 |
| Federici Signature Stays Ltd | Real estate | 2024 |
| Feeding Solutions Limited | Manufacturing | 2005 |
| Feldon View Barns Management Company Limited | Households | 2023 |
| Fenit Design Management Limited | Professional & scientific | 1999 |
| Fennel Grove Management Limited | Real estate | 2010 |
| Fenwick Property Limited | Real estate | 2023 |
| Fergana Luggage Ltd | Wholesale & retail | 2024 |
| Fern Bay Limited | Real estate | 2024 |
| Fernbridge Properties Limited | Real estate | 2007 |
| FF Property Group Ltd | Real estate | 2022 |
| FH Medical Ltd | Health & social care | 2022 |
| Fibre Safety Limited | Construction | 2022 |
| Fibre Safety Property Limited | Real estate | 2024 |
| Ficode Digital Ltd | Information & communication | 2021 |
| Ficode Services Ltd | Information & communication | 2021 |
| Ficode Technologies Limited | Information & communication | 2013 |
| Field View Dogs Ltd | Agriculture & fishing | 2026 |
| Fieldbase Investments Limited | Administrative & support | 2000 |
| Fifty Fifty Properties Limited | Real estate | 2007 |
| Fifty Two Latitude Limited | Professional & scientific | 2014 |
| FIG9 Ltd | Information & communication | 2019 |
| Figo Property Ltd | Real estate | 2024 |
| Fiji Beauty Limited | Health & social care | 2013 |
| Fillify Ltd | Administrative & support | 2025 |
| Fillmore Constructions Ltd | Construction | 2021 |
| Filtration Solutions (UK) Limited | Wholesale & retail | 2013 |
| Finance First Consulting Limited | Professional & scientific | 2024 |
| Financial Dynamics Consultants Limited | Financial services | 2010 |
| Finchwell Property Limited | Real estate | 2023 |
| Find Your Bliss Ltd | Information & communication | 2024 |
| Finding Another Way Limited | Other services | 2025 |
| Fine Finish Plastering Services Limited | Construction | 2023 |
| Fine Line Club Limited | Arts & recreation | 2026 |
| Finest Food Ltd | Wholesale & retail | 2020 |
| Finvest Properties Limited | Real estate | 2022 |
| Fioram Ltd | Construction | 2019 |
| Fire Aesthetics Ltd | Other services | 2024 |
| Fire for the Mind Ltd | Real estate | 2020 |
| Fireaway Sutton B73 Ltd | Hospitality | 2025 |
| Firebird Nutraceuticals Limited | Wholesale & retail | 2019 |
| Fireplace (UK) Ltd | Wholesale & retail | 2011 |
| First Choice Business Solutions Limited | Professional & scientific | 2013 |
| First UP, S.L.U. | | 2024 |
| Firsthaulage Ltd | Transport & logistics | 2015 |
| Fish & Chips Halesowen Limited | Hospitality | 2021 |
| Fisher & Field Ltd | Professional & scientific | 2019 |
| Fisher & Townsend (Funeral Directors) | Extraterritorial | 1963 |
| Fisher COX Property Ltd | Real estate | 2022 |
| Fisher COX Retail Limited | Wholesale & retail | 2024 |
| Fistee Ltd | Real estate | 2024 |
| Fit 4 ALL Limited | Health & social care | 2000 |
| Fit Midlands Limited | Health & social care | 2014 |
| Fit Studio Limited | Arts & recreation | 2020 |
| Fit-Kids Zone C.I.C. | Education | 2014 |
| Five Lights Education CIC | Education | 2025 |
| Five Rivers Properties Limited | Real estate | 2024 |
| FIX My Auto Ltd | Professional & scientific | 2026 |
| Fixdream Limited | Information & communication | 2025 |
| Fixed.By Rich Ltd | Other services | 2024 |
| Fizco Limited | Health & social care | 2024 |
| FJH Property Services Limited | Real estate | 2021 |
| Flair Designz Limited | Education | 2002 |
| Flair Holdings Ltd | Manufacturing | 2017 |
| Flair Window Installations Ltd | Manufacturing | 2017 |
| Flamble Limited | Information & communication | 1998 |
| FLAME2FLAME Ltd | Wholesale & retail | 2023 |
| Flames Fireplaces Limited | Wholesale & retail | 2002 |
| Flanagan Plastering Limited | Construction | 2017 |
| Flavorful Ltd | Hospitality | 2023 |
| Flavorix Limited | Hospitality | 2025 |
| Flavuro Ltd | Transport & logistics | 2019 |