| Exist - Business Plan Writers Limited | Wholesale & retail | 2012 |
| Expanded Existence Limited | Health & social care | 2023 |
| Experience Group Limited | Information & communication | 2020 |
| Experience Hampshire Limited | Information & communication | 2021 |
| Experimentally Investments Ltd | Professional & scientific | 2023 |
| Expert Company Training Ltd | Education | 2015 |
| Expert Healthcare Ltd | Health & social care | 2019 |
| Explore Communications Ltd | Professional & scientific | 2023 |
| Express P. S. Limited | Water & waste | 2003 |
| Exsb Limited | Administrative & support | 2015 |
| Eyes of the Guest Limited | Hospitality | 2012 |
| Eyessquared Ltd | Information & communication | 2026 |
| Eyre & Johnson Limited | Real estate | 1996 |
| EZ Lockers Limited | Administrative & support | 2023 |
| Ez-Devops Limited | Information & communication | 2026 |
| F & H Crawley Ltd | Hospitality | 2017 |
| F.E.M Cleaning Ltd | Administrative & support | 2024 |
| FAB Campaigns Ltd | Information & communication | 2016 |
| FAB Game Farm Limited | Agriculture & fishing | 2020 |
| Face Holdings Ltd | Financial services | 2020 |
| Faconner Limited | Professional & scientific | 2010 |
| Faenero Limited | Wholesale & retail | 2015 |
| Fahrenheit Digital Limited | Professional & scientific | 2017 |
| Fair View Films Ltd | Arts & recreation | 2024 |
| Fairbrother Consultancy Services Limited | Professional & scientific | 2016 |
| Fairfield Court Farm Development Ltd | Construction | 2024 |
| Fairways (Winchester) Management Limited | Households | 2020 |
| Fairways Property Services Limited | Construction | 2014 |
| Faizi Limited | Professional & scientific | 2008 |
| Falcon (Hailsham) Limited | Real estate | 1977 |
| Falcon Communications Limited | Information & communication | 2006 |
| Falconry Estates Limited | Real estate | 2018 |
| Falkus Bailey Limited | Professional & scientific | 2009 |
| Fantasy Stag Ltd | Information & communication | 2022 |
| Farnborough Aircraft Corporation Ltd | Manufacturing | 2002 |
| Farrant Fitness Ltd | Arts & recreation | 2020 |
| Fashion Together Ltd | Administrative & support | 2021 |
| Fast Track EMS Limited | Arts & recreation | 2016 |
| Fastluck Ltd | Professional & scientific | 2020 |
| Fastmere Limited | Households | 1981 |
| Faulkners Public Works Co.Limited | Wholesale & retail | 1957 |
| Faultfixers Technologies Ltd | Information & communication | 2012 |
| Fawley Investors GP Limited | Financial services | 2024 |
| Fayre DE France Ltd | Wholesale & retail | 2020 |
| Fays Consulting Limited | Professional & scientific | 2010 |
| FCT Trustees Limited | Administrative & support | 2025 |
| FD Professional Limited | Professional & scientific | 2013 |
| Fearlessly Feminine Ltd | Administrative & support | 2018 |
| Feasts Shoots and Leaves Ltd | Professional & scientific | 2022 |
| FED & Watered (Events) Limited | Hospitality | 2019 |
| Feebris Ltd | Health & social care | 2017 |
| Feels Great Commerce Ltd | Wholesale & retail | 2023 |
| Felinbryn Developments Ltd | Financial services | 2022 |
| Fennessy Farming Limited | Agriculture & fishing | 2021 |
| Fenwick Media Ltd | Professional & scientific | 2020 |
| Ferguson Energy Consultancy Ltd | Professional & scientific | 2017 |
| Fermor Hesketh Enterprises Ltd | Construction | 2024 |
| Fermor Holdings Limited | Financial services | 2018 |
| Fermor Land LLP | | 2018 |
| Fernden (Holdings) Limited | Financial services | 2012 |
| Fernden Limited | Administrative & support | 2002 |
| Fernhurst Colden Common Management Company Limited | Extraterritorial | 2007 |
| Ferno Time Ltd | Wholesale & retail | 2020 |
| FGH Uranium 1 Limited | Financial services | 2017 |
| FHB West Property Ltd | Real estate | 2026 |
| FHC Investments Limited | Other services | 2005 |
| FHC Limited | Other services | 2015 |
| FHG Catering Ltd | Hospitality | 2020 |
| Fides-It Consulting Ltd | Administrative & support | 2014 |
| Fiducia Pinnacle Group Ltd | Administrative & support | 2025 |
| Fiducial Communications Ltd | Information & communication | 2013 |
| Field & Fern Ltd | Extraterritorial | 2026 |
| Field and Forest Outdoor Learning Ltd | Education | 2025 |
| Field Family Holdings Limited | Financial services | 2025 |
| Field International UK Limited | Manufacturing | 2001 |
| Fieldandfurnace Ltd | Hospitality | 2025 |
| Fiksit Ltd | Information & communication | 2024 |
| Film & TV House Limited | Information & communication | 2003 |
| Filo Verde Ltd | Extraterritorial | 2014 |
| Filter-Mate Limited | Professional & scientific | 2000 |
| Finch Studio Limited | Arts & recreation | 2005 |
| Fincon Accounting Ltd | Wholesale & retail | 2025 |
| Finding Somebody Holdings Limited | Administrative & support | 2023 |
| Finding Somebody Limited | Administrative & support | 2021 |
| Finding Stories Ltd | Information & communication | 2024 |
| Fine Organic Taste Ltd | Hospitality | 2010 |
| Finexa Books Ltd | Professional & scientific | 2026 |
| Fingals of Chislehurst Limited | Hospitality | 2026 |
| Finlay Properties Ltd | Real estate | 2022 |
| Finthree Property Limited | Real estate | 2013 |
| Firestorm Apps Limited | Information & communication | 2015 |
| First Call GP Limited | Health & social care | 2015 |
| First Cone Highways Limited | Construction | 2020 |
| First CUT Solutions Ltd | Construction | 2017 |
| First Equity Loans Limited | Financial services | 2025 |
| First Flight Ned's and Advisors Ltd | Administrative & support | 2023 |
| First Home Developments Limited | Real estate | 1987 |
| First Person Ventures Ltd | Professional & scientific | 2025 |
| Firvale Clinic Ltd | Health & social care | 2017 |
| FIS Facades Ltd | Construction | 2022 |