| Evidence-Based Medicine Consultancy Ltd | Professional & scientific | 2013 |
| Evielife Ltd | Construction | 2021 |
| Evolution Fitness PT Limited | Arts & recreation | 2016 |
| Evolve Investment Property Limited | Real estate | 2022 |
| Evolve Property Group Holding Limited | Real estate | 2023 |
| Evolve Refurb Limited | Construction | 2023 |
| Ewaterservices Limited | Water & waste | 2020 |
| EWE Pens Labs Limited | Financial services | 2016 |
| Ewen Consulting Ltd | Public administration | 2024 |
| Ewen Mill Dialogues | Education | 2026 |
| Excel Repel Ltd | Administrative & support | 2017 |
| EXCELR8 Ltd | Professional & scientific | 2002 |
| EXE Capital Limited | Extraterritorial | 2019 |
| EXE Capital Management Limited | Administrative & support | 2022 |
| Exeo Europe Limited | Wholesale & retail | 2011 |
| Exloki IT Services Ltd | Information & communication | 2018 |
| Explain the Market Ltd | Professional & scientific | 2014 |
| EYE on Design and Antiques Limited | Wholesale & retail | 2022 |
| Eyfshome Ltd | Education | 2020 |
| Eykyn Media Ltd | Information & communication | 2013 |
| F R Crew Fencing Limited | Agriculture & fishing | 2006 |
| F.M.G. Properties Limited | Construction | 1983 |
| Fable Psychology Ltd | Health & social care | 2025 |
| Facsim Holdings Ltd | Manufacturing | 1992 |
| Faff Limited | Wholesale & retail | 1998 |
| Fairchild Consulting Limited | Professional & scientific | 2021 |
| Fairhurst (UK) Limited | Construction | 2002 |
| Fairwater Homes Limited | Construction | 1996 |
| Falco 1 (Management) Limited | Construction | 2015 |
| Falco 1 Limited | Construction | 2011 |
| Falco 2 Limited | Construction | 2011 |
| Falkata Semi Ltd | Professional & scientific | 2021 |
| Fans Legacy Limited | Professional & scientific | 2008 |
| FAR Design Limited | Information & communication | 2005 |
| Faringdon House Developments Limited | Real estate | 2019 |
| Farm Conscience Ltd | Financial services | 2024 |
| Farmead Court Residents Company Limited | Households | 1982 |
| Farming the Wild Productions Ltd | Information & communication | 2020 |
| Fast Reindeer Limited | Health & social care | 2020 |
| Fast Reindeer Properties Ltd | Construction | 2020 |
| Feather Wills & Estate Planning Limited | Professional & scientific | 2019 |
| Feelings FIX Ltd | Wholesale & retail | 2022 |
| Fenlandz Limited | Wholesale & retail | 2019 |
| Fenwick Group Limited | Financial services | 2015 |
| Festival in a Drum Ltd | Wholesale & retail | 2025 |
| Fibrenet Global Ltd | Wholesale & retail | 2015 |
| Fidenti Financial Planning Ltd | Financial services | 2015 |
| Filmcap Limited | Wholesale & retail | 1999 |
| Finance & Data Solutions Limited | Information & communication | 2023 |
| Financial Clarity Ltd | Financial services | 2006 |
| Finding Solutions Limited | Construction | 2022 |
| Finian Farming LLP | | 2008 |
| Fintech Recruitment Ltd | Administrative & support | 2017 |
| Finveritas Limited | Professional & scientific | 2025 |
| Fire & Flow Cirencester Limited | Hospitality | 2025 |
| Fire & Flow Holdings Limited | Financial services | 2025 |
| Fire & Flow Limited | Manufacturing | 2019 |
| Fire Simulator Service & Repairs Ltd | Other services | 2022 |
| Firesandfireplaces.Net Ltd | Transport & logistics | 2002 |
| Firmacore Limited | Construction | 2016 |
| Firmacore Plant Ltd | Construction | 2021 |
| Firmsight Limited | Construction | 2010 |
| First Military Executive Recruitment Ltd | Administrative & support | 2014 |
| First Military Recruitment Ltd | Administrative & support | 2013 |
| Fitzcount Holdings Limited | Financial services | 2026 |
| Fitzgerald & Company Consultants Ltd | Construction | 2016 |
| Fitzharris Motors Limited | Wholesale & retail | 2002 |
| Five Hestercombe Avenue Limited | Households | 1977 |
| Five Valleys Construction Ltd | Construction | 2013 |
| FJL Yacht Sales Ltd | Wholesale & retail | 2021 |
| Flexen Property Services Ltd | Construction | 2023 |
| Flexible Software Limited | Information & communication | 1989 |
| Fligbys Property Management Ltd | Real estate | 2025 |
| Flora Howard Limited | Manufacturing | 2014 |
| Florentine Logistics Limited | Mining & quarrying | 2014 |
| Flow Screed Solutions Limited | Construction | 2019 |
| FLY 7 Helicopters LLP | | 2009 |
| FLY 7 Holdings Limited | Financial services | 2017 |
| Focal Ltd | Transport & logistics | 2017 |
| Focal Solutions Ltd | Administrative & support | 2017 |
| Ford Property Holdings Ltd | Administrative & support | 2016 |
| Fordwood Limited | Other services | 2020 |
| Formula Hub Limited | Manufacturing | 2024 |
| Forsters Shelfco 220 Limited | Real estate | 2005 |
| Fortius Operating Systems Ltd | Real estate | 2003 |
| Fortunity Advisory Ltd | Professional & scientific | 2025 |
| Forum Interior Design Ltd | Wholesale & retail | 2013 |
| Fosseway Consultants Limited | Information & communication | 2025 |
| Fosseway Properties Limited | Extraterritorial | 2012 |
| Fosway Group Limited | Professional & scientific | 1996 |
| Founders Golf Trust Limited | Professional & scientific | 1995 |
| Four Sisters Property Ltd | Real estate | 2026 |
| Fowey River Properties Limited | Administrative & support | 2021 |
| FOX Green G D Ltd | Other services | 2021 |
| Fraggle Enterprises Ltd | Real estate | 2022 |
| Fragrancesbystephanie Limited | Manufacturing | 2021 |
| Frank J. Huck Limited | Agriculture & fishing | 2008 |
| Frank Page Ltd | Real estate | 2022 |
| Freedom Aviation Limited | Administrative & support | 2006 |
| Freedom Fence Limited | Wholesale & retail | 2003 |