| EXN HR & Transformation Consulting Ltd | Professional & scientific | 2026 |
| Exo-Ai Ltd | Information & communication | 2026 |
| Exocore Limited | Professional & scientific | 2022 |
| Expercity Limited | Wholesale & retail | 2017 |
| Expert Aesthetics Ltd | Health & social care | 2010 |
| Expert Endoscopy Ltd | Health & social care | 2020 |
| Expertise Hub Ltd | Information & communication | 2014 |
| Expertly Handled Ltd | Information & communication | 2026 |
| Exploration Direction Limited | Professional & scientific | 2018 |
| Expodata.Ai Ltd | Information & communication | 2023 |
| Express Transport by Road Limited | Transport & logistics | 2016 |
| Expressionedits Ltd | Professional & scientific | 2021 |
| External Contractors Limited | Administrative & support | 2011 |
| Extra Fleur Event Styling Ltd | Wholesale & retail | 2018 |
| EYE Focus Limited | Health & social care | 2009 |
| EYE Planit Colne Ltd | Health & social care | 2011 |
| Eyebrook Consultancy Limited | Information & communication | 2025 |
| Eyelash Ltd | Hospitality | 2018 |
| Eyewear by Sarah Limited | Wholesale & retail | 2025 |
| Eyewear Guru Ltd | Professional & scientific | 2024 |
| Eyeworks Redhill Limited | Health & social care | 2001 |
| EZ Made Limited | Information & communication | 2025 |
| Ezetec Limited | Wholesale & retail | 2025 |
| E’Scaasi Ventures Ltd | Arts & recreation | 2024 |
| F & S Construction Limited | Construction | 1994 |
| F & W Networks Ltd | Information & communication | 2018 |
| F H Advanced Dental Limited | Health & social care | 2025 |
| F NAZ Solutions Limited | Administrative & support | 2021 |
| F&F Head Spa Limited | Health & social care | 2024 |
| F&L Homes Ltd | Construction | 2023 |
| F&M Health Services Ltd | Health & social care | 2024 |
| F-M Engineering Services Ltd | Construction | 2022 |
| F. P. Engineering Limited | Wholesale & retail | 1995 |
| F.A.C.Est 21 Ltd | Other services | 2021 |
| F.K Secretarial Limited | Administrative & support | 2016 |
| F.T. Select Ltd | Information & communication | 2007 |
| F3 Consultancy Services Ltd | Professional & scientific | 2004 |
| FA Shopzone Ltd | Wholesale & retail | 2024 |
| Faaf Care Limited | Health & social care | 2022 |
| Fabcoat Engineering Ltd | Manufacturing | 2025 |
| Fabrial Labs Ltd | Information & communication | 2026 |
| FABX2.5.1 GP Ltd | Real estate | 2019 |
| FABX2.5.1 Nominee Ltd | Extraterritorial | 2019 |
| Facilities Management Consultancy Limited | Professional & scientific | 2025 |
| Factory Floor Productions Ltd | Arts & recreation | 2018 |
| Fahmh Ltd | Hospitality | 2018 |
| Faicetech Ltd | Information & communication | 2021 |
| Fair Juice Limited | Professional & scientific | 2008 |
| Fairbourne Insolvency Limited | Financial services | 2025 |
| Fairfax & Bell Limited | Administrative & support | 2026 |
| Fairhaven Court Lessees Limited | Real estate | 2013 |
| Fairhurst Group Holdings Limited | Water & waste | 2011 |
| Fairscroft Ltd | Professional & scientific | 2026 |
| Fairsport UK Limited | Other services | 2017 |
| Fairway Business Finance Limited | Financial services | 2016 |
| Faith Capital Limited | Real estate | 2020 |
| Faiz Medical Services Limited | Health & social care | 2021 |
| Falabella Delivery Ltd | Financial services | 2022 |
| Falabella Development Ltd | Financial services | 2022 |
| Falabella Digital Business Ltd | Financial services | 2022 |
| Falabella Digital Ltd | Financial services | 2022 |
| Falabella Marketplace Ltd | Financial services | 2022 |
| Falabella PAY Ltd | Financial services | 2022 |
| Faller Creative Limited | Professional & scientific | 2023 |
| Falmouth Lodges Management Ltd | Real estate | 2018 |
| False Locust Projects C.I.C. | Arts & recreation | 2025 |
| FAM IT Services Limited | Administrative & support | 2011 |
| Family Estate Investments Ltd | Real estate | 2024 |
| Family Pass Limited | Extraterritorial | 2019 |
| Family Psychologists Ltd | Health & social care | 2010 |
| Famlop Holdings (2020) Limited | Financial services | 2020 |
| Famlop Holdings Limited | Professional & scientific | 2009 |
| Fanteware Limited | Professional & scientific | 2024 |
| Farewell Transmission PR Ltd | Professional & scientific | 2016 |
| Farley Lodge (Bowdon) Management Company Limited | Households | 2003 |
| Farmart Media Ltd | Information & communication | 1995 |
| Faro Fashion Limited | Wholesale & retail | 2022 |
| Farrar Development Limited | Administrative & support | 2016 |
| Farrat Holdings Limited | Professional & scientific | 2017 |
| Farrat Installation Services Limited | Construction | 2008 |
| Farrington Polo Limited | Wholesale & retail | 2020 |
| Farrmore Limited | Professional & scientific | 2011 |
| Farsource Ltd | Professional & scientific | 2024 |
| Fasciato Architects Limited | Professional & scientific | 2003 |
| Fashion Corridor Limited | Wholesale & retail | 2020 |
| Fashion Lead Limited | Professional & scientific | 2026 |
| Fast Construction Manchester Ltd | Construction | 2023 |
| Fast Track Wholesalers Ltd | Wholesale & retail | 2012 |
| Fast-Pak Packaging Limited | Manufacturing | 1995 |
| Fastpath Solutions Ltd | Information & communication | 2019 |
| Fastrack Medical Services Limited | Health & social care | 1998 |
| Faulconbridge Consulting Limited | Professional & scientific | 2026 |
| Fazal Noor Bibi Limited | Health & social care | 2024 |
| FB Law Limited | Professional & scientific | 2017 |
| FB Programme Management Limited | Professional & scientific | 2020 |
| FBA Aesthetica Ltd | Wholesale & retail | 2023 |
| FCC Advisory Limited | Professional & scientific | 2024 |
| Fcna Homecare Limited | Health & social care | 2018 |
| FD Solved Limited | Professional & scientific | 2018 |
| Fd&R Ltd | Information & communication | 2024 |