| Famous Media Ltd | Professional & scientific | 2023 |
| FAN Housing Ltd | Real estate | 2025 |
| Fanbod Limited | Wholesale & retail | 2022 |
| Fancy Jacks Limited | Wholesale & retail | 2020 |
| Fancyacc.Accessories Ltd | Wholesale & retail | 2023 |
| Fanmei Industrial Co Limited | Information & communication | 2012 |
| Fannon Roofing Ltd | Construction | 2024 |
| Fantastic Farewell Limited | Other services | 2009 |
| Fantata Limited | Information & communication | 2015 |
| FAR Canal Limited | Construction | 2018 |
| FAR From Square Ltd | Information & communication | 2025 |
| FAR From Travel Ltd | Hospitality | 2025 |
| Faraoli Limited | Professional & scientific | 2019 |
| Faraz and Sanah Ltd | Other services | 2023 |
| Fare Make Ltd | Transport & logistics | 2026 |
| Fargo Holding Limited | Financial services | 2026 |
| Fargo Property 1 Limited | Real estate | 2026 |
| Fargo Sheldrake Limited | Professional & scientific | 2023 |
| Fariha Ltd | Hospitality | 2024 |
| Farimuz Ltd. | Health & social care | 2015 |
| Farm Bits Direct Limited | Wholesale & retail | 1995 |
| Farm Cafe Limited | Hospitality | 2025 |
| Farm Foresight Limited | Professional & scientific | 2024 |
| Farm Inspection Services Ltd | Professional & scientific | 2026 |
| Farm Machine Medic Ltd | Manufacturing | 2025 |
| Farmeasy Europe Limited | Manufacturing | 2024 |
| Farmeasy Ltd | Manufacturing | 2025 |
| Farmers Equipment Limited | Professional & scientific | 2013 |
| Farmhouse Bakery (Norfolk) Ltd | Manufacturing | 2010 |
| Farmweb Limited | Financial services | 1996 |
| Farnell Shawyer Ltd | Professional & scientific | 2014 |
| Farr & Associates Limited | Professional & scientific | 2008 |
| Farringdon Advisory Ltd | Financial services | 2022 |
| Farrow & Lodge Developments Ltd | Construction | 2025 |
| Farrows Limited | Administrative & support | 1998 |
| Farrs Limited | Manufacturing | 2002 |
| Farthing Green Investments Limited | Hospitality | 2017 |
| Fascial Pilates Movement Limited | Arts & recreation | 2016 |
| Fashion Originals Ltd | Professional & scientific | 2014 |
| Fashion-Ista MK Ltd | Wholesale & retail | 2020 |
| Fast & Direct Parcel Ltd | Transport & logistics | 2017 |
| Fast Developments Ltd | Construction | 2019 |
| Fast FIX Mobiles Limited | Other services | 2022 |
| Fast Lets (N) Ltd | Real estate | 2020 |
| Fast Network Designs Ltd | Information & communication | 2012 |
| Fast Pace Ltd | Hospitality | 2022 |
| Fast Premium Care Ltd. | Health & social care | 2019 |
| Fast UK Logistics Limited | Transport & logistics | 2022 |
| Fastfood Republic Ltd | Hospitality | 2015 |
| Fasting Chick Group Ltd | Real estate | 2025 |
| Fastmexico Limited | Wholesale & retail | 1999 |
| FAT Broz Ltd | Hospitality | 2023 |
| FAT Cat Inns Limited | Hospitality | 2002 |
| FAT Familiar Ltd | Information & communication | 2019 |
| Fatal Attraction Colchester Ltd | Other services | 2013 |
| Fatima & Sons Ltd | Hospitality | 2023 |
| Faustin Prolific Ltd | Health & social care | 2025 |
| Favour Ltd | Wholesale & retail | 2019 |
| Fawkham Inns Limited | Hospitality | 2012 |
| Fawz Software Services Ltd | Information & communication | 2022 |
| Fay's African Catering Services Ltd | Hospitality | 2022 |
| Fayre Maiden Foods Limited | Wholesale & retail | 2005 |
| Fayre Maiden Jewellery Ltd | Wholesale & retail | 2018 |
| FB Bars and Events Limited | Administrative & support | 2022 |
| FB Business Consulting Limited | Professional & scientific | 2017 |
| Fear Driven Films Limited | Information & communication | 2008 |
| Fearntech Limited | Information & communication | 2001 |
| Feast Theatre CIC | Arts & recreation | 2022 |
| Feasty Ltd | Information & communication | 2021 |
| FEATURE3 Limited | Information & communication | 1996 |
| Febco Ltd | Professional & scientific | 2020 |
| Fedora Holdings Ltd | Extraterritorial | 2021 |
| Feed the People CIC | Hospitality | 2023 |
| Feedback Holdings Ltd | Extraterritorial | 2022 |
| Feel Good Norfolk Ltd | Health & social care | 2022 |
| Feel Good Properties (Norfolk) Ltd | Real estate | 2023 |
| Feelwell Therapy Limited | Health & social care | 2023 |
| Fees and Charges Co Ltd | Professional & scientific | 2025 |
| Feilden + Mawson Group Ltd | Professional & scientific | 2025 |
| Feilden + Mawson Trustee Limited | Other services | 2025 |
| Feilden House Developments Limited | Administrative & support | 2020 |
| Feinbos Ltd | Administrative & support | 2016 |
| Feistybiz Ltd | Administrative & support | 2025 |
| Felbrigg Lodge Limited | Hospitality | 2012 |
| Felix House Management Company Limited | Households | 1988 |
| Fellas Digital Ltd | Professional & scientific | 2025 |
| Fellowes Plain Estate Management Company Limited | Households | 2004 |
| Fellowes Plain Homes (NO.1) Management Company Limited | Households | 2003 |
| Fellowes Plain Homes (NO.3) Management Company Limited | Households | 2005 |
| Fellowes Plain Homes (NO.4) Management Company Limited | Households | 2006 |
| Felthorpe Flying Group Limited | Arts & recreation | 2023 |
| Felthorpe Forest Nursery Limited | Agriculture & fishing | 2012 |
| Felthorpe Garden Machinery Limited | Wholesale & retail | 2023 |
| Felthorpe Motor Company Limited | Construction | 2003 |
| Felthorpe Tiger Group Ltd | Arts & recreation | 2002 |
| Feltwain 2000 Limited | Information & communication | 1998 |
| Femcee Ltd | Extraterritorial | 2002 |
| Femi Care UK Limited | Health & social care | 2024 |
| Femme Coaching Limited | Education | 2025 |
| FEN Park Developments Ltd | Construction | 2014 |