| Eyesore Merch Ltd | Wholesale & retail | 2014 |
| Eyetec Ltd | Professional & scientific | 2020 |
| Eyev Limited | Information & communication | 2020 |
| Eyvallah Estates Ltd | Real estate | 2020 |
| EZ ALI Limited | Health & social care | 2015 |
| EZ Grow Ltd | Agriculture & fishing | 2025 |
| EZ Holding Group Ltd | Financial services | 2024 |
| EZ Ramyeon Ltd | Wholesale & retail | 2024 |
| Ezari Ltd | Manufacturing | 2025 |
| Ezcash Limited | Financial services | 2022 |
| Ezeh Ltd | Administrative & support | 2022 |
| Ezeiza Healthcare Ltd | Health & social care | 2012 |
| Ezi-Dock Systems Limited | Manufacturing | 2003 |
| Ezi-Holdings Limited | Manufacturing | 2011 |
| Ezigoo Europe Limited | Wholesale & retail | 2018 |
| Ezionic Ltd | Information & communication | 2020 |
| Ezmed Ltd | Manufacturing | 2025 |
| F & a Tyres Ltd | Wholesale & retail | 2024 |
| F & AB Limited | Wholesale & retail | 2024 |
| F & F Promotional Ltd | Manufacturing | 2013 |
| F & J Commercial Properties Ltd | Financial services | 2023 |
| F & M Painting & Cleaning Ltd | Construction | 2026 |
| F & S Holdings Group Ltd | Financial services | 2021 |
| F a Management Consulting Limited | Information & communication | 2024 |
| F a Relocations Limited | Hospitality | 2023 |
| F Agwan Properties Limited | Real estate | 2023 |
| F C C Electrical Wholesalers Limited | Extraterritorial | 2013 |
| F D Commercial Limited | Real estate | 2016 |
| F Dooley & SON Limited | Extraterritorial | 2002 |
| F E and H Associates Ltd | Professional & scientific | 2023 |
| F E B Logistics Ltd | Transport & logistics | 2018 |
| F G Construction North West Limited | Construction | 2021 |
| F G Properties (Nottm) Limited | Real estate | 2023 |
| F H(Notts) Ltd | Construction | 2024 |
| F in FD Ltd | Professional & scientific | 2011 |
| F Logan Ltd | Health & social care | 2019 |
| F M T Reinstatement Limited | Construction | 2025 |
| F M T Utilities Holdings Limited | Real estate | 2020 |
| F M T Utilities Limited | Construction | 2015 |
| F P C C a Limited | Real estate | 2011 |
| F W Pammenter Limited | Construction | 2018 |
| F&A Health Ltd | Health & social care | 2012 |
| F&A Properties (EM) Ltd | Real estate | 2025 |
| F&B Business Solutions Ltd | Professional & scientific | 2014 |
| F&B Couriers Ltd | Transport & logistics | 2025 |
| F&C Holdings (East Yorkshire) Limited | Hospitality | 2017 |
| F&J Property Holdings Ltd | Real estate | 2026 |
| F&K Property Services Limited | Hospitality | 2015 |
| F&S Consultants - Design & Management Ltd | Professional & scientific | 2018 |
| F. D. Fundamentals Limited | Professional & scientific | 2013 |
| F.A Consultancy Services Ltd | Professional & scientific | 2022 |
| F.A. North (Carlton) Holdings Limited | Financial services | 2020 |
| F.A.C.Plasterers Limited | Real estate | 1967 |
| F.B.Atkins Limited | Extraterritorial | 1933 |
| F.H.C Property & Development Ltd | Real estate | 2024 |
| F.Partridge & SON (Heel Manufacturers) Rothwell Limited | Professional & scientific | 1960 |
| F.S. Peake & SON Limited | Agriculture & fishing | 1990 |
| F.S.C.C. Limited | Education | 2014 |
| F1 Engine Reconditioning Ltd | Wholesale & retail | 2025 |
| F11 Autos Ltd | Wholesale & retail | 2013 |
| F1RSTPOINT Sportswear Limited | Wholesale & retail | 2012 |
| F2 Magnetics Limited | Manufacturing | 1987 |
| F20 Properties Ltd | Real estate | 2019 |
| F3S Technology Ltd | Information & communication | 2026 |
| F4 Fletura Ltd | Real estate | 2025 |
| F7 Technologies Ltd | Information & communication | 2013 |
| FA Gulamz Company Ltd | Wholesale & retail | 2025 |
| FA Holdings Ltd | Financial services | 2023 |
| FA Pro Maintenance Ltd | Construction | 2026 |
| FAA Property Services Ltd | Real estate | 2022 |
| Faade Cleaning Services Ltd | Administrative & support | 2026 |
| Faal Ltd | Health & social care | 2024 |
| FAB Education Consulting Ltd | Education | 2019 |
| Fab.Key Ltd | Real estate | 2018 |
| Fabbox Automated Ltd. | Education | 2024 |
| Fabclicks Ltd | Professional & scientific | 2026 |
| Fabdishes Limited | Hospitality | 2024 |
| Faber Blinds UK Limited | Manufacturing | 1962 |
| Fabien Birren Ltd | Extraterritorial | 2017 |
| Fabis Airconditioning Limited | Extraterritorial | 2011 |
| Fabis Limited | Construction | 2003 |
| Fabra Events Company Limited | Administrative & support | 2025 |
| Fabric Recruitment Limited | Administrative & support | 2019 |
| Fabrico Holdings Limited | Financial services | 2025 |
| Fabricx Ltd | Professional & scientific | 2024 |
| Fabrikat (Nottingham) Limited | Manufacturing | 1985 |
| Fabro Verde Ltd | Manufacturing | 2022 |
| Fabuglobal Limited | Information & communication | 2015 |
| Fabulous Events Limited | Professional & scientific | 2009 |
| FAC1968 Ltd | Wholesale & retail | 2018 |
| Face Pilates Studio Ltd | Other services | 2025 |
| Facere Developments Limited | Professional & scientific | 2019 |
| Facesmakeupartistry Limited | Health & social care | 2019 |
| FACET3 Property Ltd | Real estate | 2025 |
| Facetalk Ltd | Manufacturing | 2025 |
| Facialogy Beauty and Wellbeing Limited | Other services | 2024 |
| Factor 50 Ltd | Information & communication | 2018 |
| Factors Global Limited | Wholesale & retail | 2025 |
| Factory Direct Impex Ltd | Wholesale & retail | 2026 |
| Fade LAB Barbers Ltd | Other services | 2025 |