| Executive Ride Connections (ERC) Ltd | Transport & logistics | 2025 |
| Executive Sales Ltd | Wholesale & retail | 2025 |
| Executive Security Group Ltd | Professional & scientific | 2020 |
| Executive Systems Limited | Transport & logistics | 1981 |
| Exel Engraving Limited | Other services | 1982 |
| Exeter (Wyvern) Residents Company Limited | Households | 2003 |
| Exeter Housing Ltd | Real estate | 2026 |
| Exeter Lodge Management Company Limited | Real estate | 1995 |
| Exmouth (York Close) Residents Company Limited | Households | 2004 |
| Exode U.K. Ltd | Information & communication | 2014 |
| Exodus Business Solutions UK Limited | Professional & scientific | 2015 |
| Exomodus Ltd | Wholesale & retail | 2026 |
| Exotic Car Bodyshop Ltd | Wholesale & retail | 2024 |
| Expat Recruitment Ltd | Administrative & support | 2008 |
| Expatrium International Ltd | Administrative & support | 2004 |
| Experience Designed Ltd | Information & communication | 2023 |
| Experience Travel Limited | Administrative & support | 2018 |
| Expert Analysis Group Limited | Financial services | 2007 |
| Explore Modular Limited | Construction | 2020 |
| Explore Travel Limited | Administrative & support | 2018 |
| Express Booze Limited | Wholesale & retail | 2009 |
| Express Burger Ltd | Hospitality | 2019 |
| Express Chicken & Pizza Ltd | Hospitality | 2023 |
| Express Dance Ltd | Wholesale & retail | 2015 |
| Express Fit Bridgnorth Ltd | Wholesale & retail | 2017 |
| Express Holdings Group Ltd | Real estate | 2026 |
| Express Restaurant Ltd | Wholesale & retail | 2018 |
| Expressions Group Limited | Construction | 2022 |
| Exquisite Group Limited | Real estate | 2016 |
| Extra MSA Property (UK) Limited | Professional & scientific | 1999 |
| Extraordinary Vision Media Production Limited | Information & communication | 2018 |
| Extraperks Ltd | Other services | 2023 |
| Extreeme Enterprise Limited | Wholesale & retail | 2025 |
| Extreme Car Service Ltd | Wholesale & retail | 2013 |
| EYE Auto Repair Centre Limited | Wholesale & retail | 2018 |
| EYE Green Cars Ltd | Wholesale & retail | 2016 |
| EYE Minimart Ltd | Wholesale & retail | 2025 |
| EYE Village Cars Ltd | Other services | 2020 |
| Eye-Optical Ltd | Health & social care | 2021 |
| Eyemani Limited | Information & communication | 2020 |
| Eyematt Ltd | Hospitality | 2019 |
| Eyepioneer Ltd | Health & social care | 2020 |
| Eyes ARE Loud Ltd | Transport & logistics | 2025 |
| Eyestar Solutions Limited | Information & communication | 2024 |
| Eylul DRY Goods Limited | Hospitality | 2021 |
| Eyre Athletic Limited | Arts & recreation | 2023 |
| Eyre Athletic Peterborough Limited | Arts & recreation | 2025 |
| EZ Fit Ltd | Manufacturing | 2020 |
| EZ Reel Ltd | Manufacturing | 2024 |
| EZI Eastern Limited | Real estate | 2025 |
| EZI Web Solutions Ltd | Information & communication | 2020 |
| F & J Broadbent Ltd | Agriculture & fishing | 2019 |
| F C Carpentry Ltd | Construction | 2018 |
| F C Workforce Ltd | Administrative & support | 2018 |
| F Elzbieta F Ltd | Wholesale & retail | 2021 |
| F N W Ltd | Hospitality | 2026 |
| F P Smith Holdings Eastfield Limited | Professional & scientific | 1951 |
| F R P Solutions Limited | Extraterritorial | 2006 |
| F S Brennan Decorating and Property Maintenance Ltd | Construction | 2014 |
| F S D Builders Ltd | Construction | 2016 |
| F S Travel Ltd | Transport & logistics | 2023 |
| F&B Process UK Ltd | Professional & scientific | 2022 |
| F&Co Lettings Limited | Real estate | 2024 |
| F&M Associates Ltd | Wholesale & retail | 2019 |
| F&M More Space Ltd | Construction | 2022 |
| F&M Sparkle Cleaners Ltd | Administrative & support | 2026 |
| F&S Fleet Wash Ltd | Administrative & support | 2016 |
| F&U Properties Ltd | Real estate | 2023 |
| F. Perkins Limited | Administrative & support | 1932 |
| F.A.M Building Contractors LLP | | 2004 |
| F.B. Gibbons & Sons (Farms) Ltd | Professional & scientific | 1977 |
| F.C.& H.S.Allen Limited | Agriculture & fishing | 1946 |
| F.I. Bliss Limited | Agriculture & fishing | 1954 |
| F.J.N Transport Limited | Transport & logistics | 2025 |
| F.P. Smith Holdings (Barwell) Limited | Professional & scientific | 1964 |
| F.P. Smith Holdings (Ilkeston) Limited | Wholesale & retail | 1962 |
| F.P.Smith Holdings (Newark Avenue) Limited | Wholesale & retail | 1953 |
| F.P.Smith Motors Limited | Wholesale & retail | 1963 |
| F.P.Smith(Holdings)Limited | Wholesale & retail | 1940 |
| F8 Photography Limited | Professional & scientific | 2002 |
| FA Ventures Ltd | Wholesale & retail | 2026 |
| FA3 Limited | Information & communication | 2011 |
| FAB Floorboards and Reclamation Swindon Limited | Wholesale & retail | 2025 |
| FAB Logistics Ltd | Transport & logistics | 2024 |
| Fabio Ferreira Ltd | Manufacturing | 2026 |
| Fablemaker Ltd | Manufacturing | 2021 |
| Fabtech Sheet Metal Ltd. | Manufacturing | 2008 |
| Face Upgrade Limited | Information & communication | 2025 |
| Facelift Property Renovations Ltd | Construction | 2022 |
| Faces & Fine Lines Ltd | Other services | 2025 |
| Facial Palsy UK | Health & social care | 2012 |
| FACILIT84U Limited | Extraterritorial | 2011 |
| Facts and Fine Liners Ltd | Information & communication | 2023 |
| FAD Mechanic Ltd | Wholesale & retail | 2021 |
| FAD Properties Ltd | Real estate | 2016 |
| Faedah Solutions Limited | Information & communication | 2020 |
| Faes Property Holdings Ltd. | Real estate | 1995 |
| Faha DSM Limited | Health & social care | 2022 |
| Fahey Ecology Ltd | Professional & scientific | 2020 |
| Fahmaida Holdings Limited | Construction | 2026 |