| Euraqua UK Limited | Manufacturing | 1984 |
| Euro Youth Mental Health C.I.C. | Health & social care | 2017 |
| Eurodollar Limited | Extraterritorial | 2002 |
| European Cars Limited | Wholesale & retail | 2026 |
| European Property Development Limited | Financial services | 2001 |
| European Racking Federation | Other services | 2004 |
| European Vaccination Group (UK) Limited | Professional & scientific | 2007 |
| Evans & Payne LLP | | 2016 |
| Evans Brew Ltd | Manufacturing | 2024 |
| EVE HR Consulting Limited | Administrative & support | 2021 |
| Everest Tree Services Ltd | Administrative & support | 2022 |
| Every Step Recruitment Ltd | Administrative & support | 2020 |
| Evolution Electrical and Property Development Ltd | Construction | 2020 |
| Evolution Fireplaces Ltd | Manufacturing | 2021 |
| Evolution PUB Company Ltd | Hospitality | 2017 |
| Evolution Tree Works Services Limited | Agriculture & fishing | 2015 |
| Evolve Forward Ltd | Professional & scientific | 2026 |
| Exacity Recruitment Ltd. | Administrative & support | 2016 |
| Exacta Supply Limited | Wholesale & retail | 2022 |
| Excel SA Limited | Health & social care | 2015 |
| EXCELERATE360 Ltd | Professional & scientific | 2013 |
| Excellent Tents Ltd | Construction | 2020 |
| Exclusive Ranges Domestic Limited | Wholesale & retail | 2003 |
| Exclusive Ranges Limited | Wholesale & retail | 1996 |
| Exclusive Vehicle Operations Ltd | Administrative & support | 2025 |
| Exec Exchange Limited | Professional & scientific | 2024 |
| Execution Science Limited | Professional & scientific | 2023 |
| Exeon Limited | Manufacturing | 2017 |
| Eximius Projects Limited | Administrative & support | 2010 |
| Expanded Universe Limited | Professional & scientific | 2020 |
| Expert Finish Ltd | Professional & scientific | 2021 |
| Expertise Edge Limited | Professional & scientific | 2018 |
| Explomould Engineering Services Limited | Manufacturing | 1999 |
| Exponential Tuition LLP | | 2023 |
| Extensor Limited | Professional & scientific | 2003 |
| Extramobile Limited | Administrative & support | 2017 |
| Extreme Group Holdings Limited | Financial services | 2017 |
| Extreme Scaffolding Services Limited | Construction | 2004 |
| Extreme Specialist Services Limited | Construction | 2017 |
| Eysham Court Freehold Limited | Construction | 2020 |
| Ezee Management Limited | Professional & scientific | 2018 |
| F & G Murray Limited | Agriculture & fishing | 2024 |
| F H Consultants Limited | Information & communication | 1984 |
| F. Hitch & Co. Limited | Real estate | 1935 |
| F1 Property (UK) Ltd | Households | 2014 |
| Fabian Johnson Ltd | Arts & recreation | 2025 |
| Fabio's Gelato ( Letchworth ) Limited | Hospitality | 2018 |
| Fabio's Gelato (Hitchin) Limited | Hospitality | 2021 |
| Fabio's Gelato (Weston) Limited | Manufacturing | 2022 |
| Fabraf Consultancy Services Limited | Professional & scientific | 2025 |
| Fabraf LLP | | 2021 |
| Fade Away Barbers Limited | Other services | 2020 |
| Fair Game Media Limited | Information & communication | 2015 |
| Fair Recruitment Limited | Administrative & support | 2015 |
| Fair Trade Housing Limited | Real estate | 2021 |
| Fairgrove Skin Clinic Limited | Other services | 2015 |
| Fairlight Creative Ltd | Professional & scientific | 2024 |
| Fairview Medicare Ltd | Health & social care | 2022 |
| Fairweigh Limited | Wholesale & retail | 2001 |
| Falcon Motor Club Limited | Other services | 2007 |
| Fall OFF the Wall Limited | Information & communication | 2002 |
| Fallowfield NK Ltd. | Real estate | 2020 |
| Farai Matenga Limited | Health & social care | 2017 |
| Farley Property Investments Ltd | Real estate | 2025 |
| Farm Investments Limited | Extraterritorial | 2008 |
| Farrelly-Healey Ltd | Construction | 2024 |
| Fashion Nails Hitchin Ltd | Other services | 2022 |
| FAT Cat Consultants Limited | Professional & scientific | 2006 |
| FAT Dog Design Ltd | Professional & scientific | 2012 |
| Fatou Toure Limited | Professional & scientific | 2018 |
| Faulkner's Flooring Limited | Wholesale & retail | 2013 |
| Faustulus Limited | Hospitality | 2019 |
| FB (UK) Ltd | Financial services | 1999 |
| Fealla-Dhà Ltd | Wholesale & retail | 2026 |
| Feathergreen Consulting Ltd | Professional & scientific | 2026 |
| Feed My Fish Limited | Wholesale & retail | 2006 |
| Femmes Designers Limited | Information & communication | 2021 |
| Fenner Fabrics Limited | Wholesale & retail | 2023 |
| Fenweld Engineering Limited | Manufacturing | 2022 |
| Fernandes TCA Group Ltd | Professional & scientific | 2019 |
| FES Cambridge Limited | Construction | 2010 |
| Fescom Limited | Construction | 2018 |
| FFF Sports Limited | Arts & recreation | 2020 |
| Fgtv Limited | Arts & recreation | 2026 |
| Fibre Optics Ltd | Construction | 2023 |
| Fielding & Nicholson UK Ltd | Wholesale & retail | 2018 |
| Fieldwood Property Ltd | Construction | 2026 |
| Fierce Calm Community Interest Company | Other services | 2019 |
| Fierce Grace Limited | Arts & recreation | 2013 |
| Fierce Grace Retreats Limited | Wholesale & retail | 2023 |
| Fierce Grace Training Limited | Arts & recreation | 2026 |
| Fifth Dimension Property Limited | Real estate | 2021 |
| Fighting High Limited | Administrative & support | 2008 |
| Finch Property Solutions Limited | Construction | 2025 |
| Find Your Claims Ltd | Financial services | 2015 |
| Fine Design (Biggleswade) Limited | Other services | 2017 |
| Finedata Limited | Information & communication | 1987 |
| Finesse Interiors Limited | Manufacturing | 2024 |
| Finger Music and Sound Design Limited | Information & communication | 2010 |
| Finish Line Productions Limited | Arts & recreation | 2026 |