| Ellis Trading Limited | Wholesale & retail | 2024 |
| Ellough AD Plant Limited | Energy | 2010 |
| Ellutia Holdings Limited | Professional & scientific | 2015 |
| Ellutia I.P. Limited | Administrative & support | 2017 |
| Ellutia Limited | Manufacturing | 1994 |
| Elmo UK Ltd | Manufacturing | 2023 |
| Eloccer Limited | Professional & scientific | 2013 |
| ELY & Soham Electrical Services Ltd | Construction | 2016 |
| ELY Auto Care Limited | Wholesale & retail | 2015 |
| ELY Auto Sales Ltd | Wholesale & retail | 2024 |
| ELY Barton Mews Limited | Professional & scientific | 1976 |
| ELY Bathrooms Limited | Wholesale & retail | 2022 |
| ELY Beauty and Skin Clinic Ltd | Other services | 2025 |
| ELY Business Travel Ltd | Transport & logistics | 2021 |
| ELY Cathedral Enterprises Limited | Other services | 1986 |
| ELY Central Heating Services Limited | Construction | 2012 |
| ELY Chiropractic Clinic Ltd | Health & social care | 2017 |
| ELY City Football Club Limited | Arts & recreation | 1985 |
| ELY Classrooms Ltd | Education | 2021 |
| ELY Clay Collective LLP | | 2025 |
| ELY Cleaning Services & Carpet Upholstery Cleaning Ltd | Administrative & support | 2017 |
| ELY Cleaning Services Ltd | Administrative & support | 2016 |
| ELY Communications Limited | Information & communication | 2025 |
| ELY Community Cinema CIC | Information & communication | 2025 |
| ELY Construction Corp Limited | Construction | 2021 |
| ELY DBF Property Limited | Real estate | 2006 |
| ELY Design Group Limited | Construction | 2011 |
| ELY Dessert Limited | Hospitality | 2024 |
| ELY Diocesan Board of Finance(The) | Other services | 1915 |
| ELY Diocesan Schools Services Limited | Education | 2004 |
| ELY Dog Field Ltd | Other services | 2024 |
| ELY Exotics Ltd | Wholesale & retail | 2020 |
| ELY Farmhouse Furniture Limited | Wholesale & retail | 2017 |
| ELY Fencing Limited | Administrative & support | 2016 |
| ELY Finance Ltd | Professional & scientific | 2012 |
| ELY Folk Festival C.I.C. | Arts & recreation | 2011 |
| ELY Foot Clinic Ltd | Health & social care | 2026 |
| ELY Grill Ltd | Hospitality | 2018 |
| ELY Hero Awards CIC | Other services | 2018 |
| ELY Marine (Property) Limited | Real estate | 2007 |
| ELY Marine Limited | Manufacturing | 2006 |
| ELY Markets Limited | Real estate | 2016 |
| ELY Masonic Hall Limited | Other services | 1982 |
| ELY Mechanical Services Limited | Construction | 2021 |
| ELY Mobile Solutions Ltd | Wholesale & retail | 2022 |
| ELY Motor Services Limited | Wholesale & retail | 2014 |
| ELY North Consortium LLP | | 2015 |
| ELY Outdoor Sports Association Ltd | Arts & recreation | 2013 |
| ELY PCN Ltd | Health & social care | 2022 |
| ELY Planning Company (Cambridgeshire) Ltd | Professional & scientific | 2019 |
| ELY Plumbing and Heating Limited | Construction | 2013 |
| ELY Porta Language School Ltd | Education | 2011 |
| ELY Property Development Ltd | Construction | 2024 |
| ELY Property Rentals Limited | Real estate | 2025 |
| ELY PUB Company Ltd | Hospitality | 2025 |
| ELY Skip Hire Limited | Water & waste | 2005 |
| ELY Spice Ltd | Hospitality | 2014 |
| ELY Squash & Leisure Limited | Arts & recreation | 1988 |
| ELY Stays Ltd | Hospitality | 2011 |
| ELY Supplies Limited | Wholesale & retail | 2026 |
| ELY Tandoori Ltd | Hospitality | 2020 |
| ELY Telecom Ltd | Extraterritorial | 2010 |
| ELY Wealth Management Ltd | Financial services | 2019 |
| ELY Wildspace Ltd | Other services | 2007 |
| Elyte Services Limited | Transport & logistics | 2002 |
| Elyvine Limited | Real estate | 2013 |
| EM Project Management Limited | Information & communication | 2016 |
| Embark Media Limited | Information & communication | 2014 |
| Embrace Psychotherapy Ltd | Health & social care | 2025 |
| Emerald Frog Marketing Ltd | Professional & scientific | 2026 |
| Emily Rose Throws Ltd | Arts & recreation | 2025 |
| Emir K Catering Ltd | Hospitality | 2022 |
| Empath Marketing Ltd | Information & communication | 2019 |
| Empathy Care Services Limited | Health & social care | 2020 |
| Empowered Electrical Ltd | Construction | 2025 |
| Encore Pro Limited | Information & communication | 2017 |
| Engine Yard Limited | Households | 2010 |
| ENHANCE68 Limited | Health & social care | 2017 |
| Enigma Property (One) Limited | Real estate | 2020 |
| Enlight in ME Ltd | Professional & scientific | 2026 |
| Enny Wines Ltd | Wholesale & retail | 2015 |
| Enviro-Link Contracts Limited | Administrative & support | 2024 |
| Environ Grounds Services Limited | Administrative & support | 2019 |
| Enzagen Ltd | Professional & scientific | 2008 |
| Epiccomiccollectibles Ltd | Wholesale & retail | 2026 |
| Epiic Limited | Professional & scientific | 2013 |
| Epistamai BIO Limited | Professional & scientific | 2023 |
| EQ Solutions Consultancy Ltd | Professional & scientific | 2023 |
| Equatech Consultancy Services Limited | Wholesale & retail | 2013 |
| Equine Medicare International Limited | Professional & scientific | 2025 |
| Equinetworks Limited | Wholesale & retail | 2017 |
| Equitas Data Solutions Ltd | Information & communication | 2024 |
| Equitas Food Services Limited | Hospitality | 2025 |
| Equity Edge Investment Ltd | Real estate | 2024 |
| Eril Ltd | Hospitality | 2017 |
| Erindi Consulting Ltd | Information & communication | 2019 |
| Escuelita CIC | Education | 2017 |
| Essafinaat UK Limited | Agriculture & fishing | 2016 |
| Essential European Information Limited | Real estate | 1994 |
| Ettington Estates Limited | Real estate | 2019 |