| Frostick & Co. Trading Ltd | Wholesale & retail | 2025 |
| Frostrow Limited | Energy | 2019 |
| Frozen Light | Education | 2011 |
| FRR Limited | Financial services | 2017 |
| FRS Precious Metals and Collectables Ltd | Wholesale & retail | 2026 |
| Fruitcakes Limited | Manufacturing | 2004 |
| Fruitful (UK) Ltd | Health & social care | 2014 |
| Fruitful Media Ltd | Manufacturing | 2007 |
| Fruugul Ltd | Information & communication | 2020 |
| Frwrd Nutrition Ltd | Wholesale & retail | 2025 |
| Frying Land Ltd | Hospitality | 2024 |
| FS Acquisitions Limited | Financial services | 2018 |
| FS Services East Anglia Limited | Administrative & support | 2023 |
| FSB Places and Spaces Limited | Real estate | 2025 |
| FSC Signs Limited | Manufacturing | 2021 |
| FSG Contracting Limited | Manufacturing | 2015 |
| FSG Signs & Graphics Limited | Manufacturing | 2009 |
| FSK Holdings Ltd | Financial services | 2020 |
| Fslp Limited | Wholesale & retail | 2008 |
| FSR Consultancy Ltd | Wholesale & retail | 2016 |
| FSS Electrical Services Ltd | Manufacturing | 2014 |
| FST (Holding) Ltd | Financial services | 2020 |
| FT13 Ltd | Administrative & support | 2025 |
| FTC Agriculture Ltd | Professional & scientific | 2008 |
| FTP Motor Services Ltd | Wholesale & retail | 2026 |
| FTP Properties Limited | Real estate | 2021 |
| FTR Brickwork Ltd | Construction | 2017 |
| Ftvc Advisor LLP | | 2025 |
| Ftvc Founder LLP | | 2025 |
| Ftvc General Partner Limited | Financial services | 2025 |
| Ftvc Nominee Limited | Financial services | 2025 |
| FTW Solutions Ltd | Information & communication | 2024 |
| Fu-Gen Energy UK Limited | Energy | 2022 |
| Fuel B + C Ltd | Hospitality | 2017 |
| Fuelogical Ltd | Professional & scientific | 2024 |
| Fulcher Coachtrimmers Ltd | Wholesale & retail | 2014 |
| Fulcrum Power Limited | Energy | 2013 |
| Fulfilled Talent Limited | Administrative & support | 2023 |
| Full MIX Marketing Limited | Professional & scientific | 2016 |
| Full Skin Care Ltd | Wholesale & retail | 2025 |
| Full Spectrum Ltd | Information & communication | 2015 |
| Fuller Investments Limited | Real estate | 2026 |
| Fulltilt Digital Ltd | Professional & scientific | 2015 |
| Fully Pumped Gym Ltd | Arts & recreation | 2013 |
| Fulmac Ltd | Real estate | 2022 |
| FUN on the Internet Ltd | Information & communication | 2023 |
| Fundamental Audio Ltd | Wholesale & retail | 2025 |
| Fundamental Communications Ltd | Professional & scientific | 2011 |
| Funforce Limited | Arts & recreation | 2012 |
| Funk Soul Brother Ltd | Education | 2019 |
| Funky Skincare Limited | Wholesale & retail | 2013 |
| Funky Vits Ltd | Wholesale & retail | 2024 |
| Funny Little Boxes Ltd | Manufacturing | 2022 |
| Funtime Club Limited | Education | 2009 |
| Funwork Limited | Real estate | 2019 |
| FUR Recruitment 925 Limited | Administrative & support | 2023 |
| Furber & Co Ltd | Real estate | 2010 |
| Further Concepts Ltd | Administrative & support | 2003 |
| Furthermore & Engage Limited | Professional & scientific | 2014 |
| Furthermore Marketing Solutions Limited | Extraterritorial | 2020 |
| Furzer Holdings Ltd | Financial services | 2026 |
| Fuse Norwich CIC | Administrative & support | 2022 |
| Fusion Growth Acquisitions Limited | Financial services | 2019 |
| Fusion Income Acquisitions Limited | Financial services | 2019 |
| Fusion Kung FU Ltd | Arts & recreation | 2026 |
| Fusion Life Limited | Administrative & support | 2013 |
| Fusion Mercantile Group Ltd | Financial services | 2012 |
| Fusionsmiths Limited | Wholesale & retail | 2008 |
| Fusiontech Inc Limited | Information & communication | 2025 |
| Future Action Limited | Education | 2020 |
| Future Appliances Limited | Real estate | 2012 |
| Future Digital Norfolk Limited | Information & communication | 2015 |
| Future Energy Generation Limited | Energy | 2011 |
| Future Football Elite Community Interest Company | Arts & recreation | 2017 |
| Future Homes (Norfolk) Ltd | Construction | 2021 |
| Future Life (Estate Planning) Ltd | Professional & scientific | 2015 |
| Future Life Family Ltd | Financial services | 2025 |
| Future Origins Limited | Agriculture & fishing | 2021 |
| Future Property Holdings East Ltd | Real estate | 2021 |
| Future Strength Ltd | Real estate | 2026 |
| Future Tech VC 1 LP | | 2026 |
| Future-Built Ltd | Construction | 2017 |
| Futuredog Limited | Wholesale & retail | 2004 |
| Futurefarm Limited | Information & communication | 2018 |
| Futurelink Employment Services Limited | Extraterritorial | 2007 |
| Futurepath CFO Ltd | Professional & scientific | 2025 |
| Futuretown Property Management Limited | Households | 1993 |
| Futurus Construction Ltd | Construction | 2021 |
| Futurus Rentals Ltd | Real estate | 2021 |
| Fuzion Systems Ltd | Wholesale & retail | 2006 |
| Fuzzlab Limited | Information & communication | 2016 |
| Fvii (GP I) Limited | Financial services | 2021 |
| Fvii (Nominees) Ltd | Financial services | 2021 |
| FW Properties Investments Limited | Real estate | 2011 |
| FW Properties Limited | Construction | 2010 |
| FX Decor Limited | Construction | 2003 |
| FX Enterprise Limited | Transport & logistics | 2024 |
| Fyebridge Limited | Construction | 2010 |
| Fyfy Ltd | Transport & logistics | 2017 |
| Fyna Vehicle Hire Limited | Administrative & support | 2008 |