| Electricity Network Contractors Limited | Construction | 2017 |
| Eleven Consulting Global Ltd | Professional & scientific | 2019 |
| Elita Auto Car Transport Ltd | Wholesale & retail | 2019 |
| Elite Garage Doors (Midlands) Limited | Construction | 2014 |
| Elite Garage Doors (South West) Limited | Construction | 2017 |
| Elitia Limited | Professional & scientific | 2012 |
| Elliott Thompson Limited | Wholesale & retail | 2008 |
| ELM Tree Park Management Company Limited | Households | 2000 |
| Elmfarm Group Ltd | Other services | 2024 |
| Elstrom Limited | Professional & scientific | 2022 |
| EMD Inspire Limited | Other services | 2017 |
| Emerald Executive Transfers Limited | Transport & logistics | 2017 |
| Emgold Consulting and Property Limited | Information & communication | 2025 |
| EMI Plumbing and Heating Ltd | Construction | 2019 |
| Emlyn Jones and Daughters Ltd | Households | 2022 |
| Empathy Cards Limited | Wholesale & retail | 2019 |
| Emprisia Limited | Information & communication | 2017 |
| Enable Construction Ltd. | Construction | 2017 |
| Encapsulite Holdings Limited | Real estate | 2020 |
| Encouraging Steps CIC | Health & social care | 2026 |
| Endless Quantum | Financial services | 2024 |
| Endorphin Property LLP | | 2025 |
| Enfes Restaurant Ltd | Hospitality | 2019 |
| Enforcement Services Limited | Professional & scientific | 2002 |
| Engenetics Limited | Extraterritorial | 2009 |
| Engineered Wood Limited | Wholesale & retail | 2023 |
| English Language Zone Limited | Education | 2021 |
| Enhance CNC Ltd | Manufacturing | 2025 |
| Enhance Landscapes & Groundworks Services Ltd | Administrative & support | 2023 |
| Enhance Support Solutions Limited | Professional & scientific | 2007 |
| Entertowin Ltd | Professional & scientific | 2026 |
| Entire Club Ltd | Education | 2023 |
| Entire Production Services Ltd | Arts & recreation | 2015 |
| Environmentally Sound Limited | Professional & scientific | 1998 |
| Eogh Ltd | Health & social care | 2023 |
| EP Brickwork Ltd | Construction | 2016 |
| EP Constructions Limited | Construction | 2008 |
| Equaligne Ltd | Health & social care | 2025 |
| Equate 2 Ltd. | Other services | 2016 |
| Equine Veterinary & Reproduction Ltd | Professional & scientific | 2015 |
| Eric Evans & Associates Limited | Professional & scientific | 2000 |
| Escapes Landscaping Ltd | Administrative & support | 2009 |
| ESI Controls Limited | Wholesale & retail | 2009 |
| Esquires Coffee Bucks Limited | Hospitality | 2021 |
| Essam Lettings Ltd | Real estate | 2019 |
| Essential Relax by SIA Ltd | Other services | 2025 |
| Ethical Hacker Ltd | Information & communication | 2010 |
| Eurolane MOT Limited | Wholesale & retail | 2010 |
| Eurolane Property Company Limited | Real estate | 2016 |
| Eventcreate Ltd | Administrative & support | 2014 |
| Everspace SA Ltd | Hospitality | 2021 |
| Evolve Law Ltd | Professional & scientific | 2015 |
| Evoplan Limited | Information & communication | 2026 |
| Excelsior Doors & Joinery Limited | Manufacturing | 2000 |
| Exclsr Limited | Education | 2026 |
| Exemplacare Limited | Health & social care | 2017 |
| Exempli Labs Ltd | Information & communication | 2026 |
| Exhibition Mastery Ltd | Professional & scientific | 2020 |
| Experience Haus Ltd | Information & communication | 2017 |
| Explore Campervans Limited | Administrative & support | 2019 |
| Expro Associates Limited | Professional & scientific | 2005 |
| Exquisite Occasions Ltd | Other services | 2012 |
| F C Webster Consulting Ltd | Professional & scientific | 2017 |
| F I Bookkeeping Limited | Professional & scientific | 2015 |
| F L a C O Ltd | Wholesale & retail | 2021 |
| F. H. Pullin & Sons Limited | Agriculture & fishing | 1987 |
| F1 Lining Limited | Other services | 1999 |
| Fabrication Techniques Ltd | Professional & scientific | 2015 |
| Fair Winds Advocacy Limited | Health & social care | 2012 |
| Fairlawns (Amersham Road) Residents Company Limited | Households | 2002 |
| Fans Track Ltd | Professional & scientific | 2024 |
| Fawsley Ltd | Real estate | 1991 |
| Faye Johnson Consultancy Limited | Other services | 2021 |
| Featherstones Bespoke Jewellery Ltd | Manufacturing | 2026 |
| Feralthing Limited | Professional & scientific | 2018 |
| Fewcha Investments Ltd | Real estate | 2022 |
| Field Folk Ltd | Agriculture & fishing | 2026 |
| Fifty Three Foods Limited | Hospitality | 2015 |
| Figaro Virtual Services Limited | Administrative & support | 2020 |
| Filis Healthcare Ltd | Health & social care | 2023 |
| Financial Trading & Consultancy Limited | Financial services | 1986 |
| Find New Business Ltd | Administrative & support | 2024 |
| Fineline Services Limited | Information & communication | 2000 |
| Finest Accounting Limited | Professional & scientific | 2023 |
| Finite State Systems Limited | Professional & scientific | 1984 |
| Finmere Management Limited | Transport & logistics | 2018 |
| Finova Advisory Limited | Professional & scientific | 2024 |
| Finova Partners Limited | Professional & scientific | 2003 |
| FIRE24 Ltd | Construction | 2011 |
| First Product Innovations Ltd | Manufacturing | 2022 |
| First Zero Ltd | Manufacturing | 2023 |
| Fishpond Consulting Limited | Professional & scientific | 2025 |
| Fit for School International Ltd | Health & social care | 2011 |
| Fitbodystudio Ltd | Arts & recreation | 2025 |
| Five O'Clock Creative Limited | Information & communication | 2019 |
| Fiyo Limited | Transport & logistics | 2021 |
| Fleece Yard (Rental Homes) Limited | Real estate | 2023 |
| Flexryde UK Limited | Wholesale & retail | 2024 |
| Flower Operations Limited | Wholesale & retail | 2023 |
| Flowery Limited | Wholesale & retail | 2023 |