| Ebritain Limited | Ramsgate | 2007 |
| Ebro Crescent 1955 Limited | Coventry | 2015 |
| EBS (UK) Limited | Warwick | 2013 |
| EBS Plant Hire Limited | Manchester | 2019 |
| EBS Projects Ltd | Weybridge | 2001 |
| EBS Telecom Solutions Limited | Milton Keynes | 2014 |
| EBS Ventures Ltd | London | 2017 |
| Ebsford Invasives Limited | Castleford | 2019 |
| Ebson Fluid Control Industrial Co., Ltd | Beckenham | 2016 |
| Ebsworth Brickwork Limited | Braintree | 2009 |
| Ebuildingsupplies Ltd | London | 2009 |
| Ebusiness Creator Limited | Leeds | 2000 |
| EC Accounting Ltd | Norwich | 2018 |
| EC Advisors Ltd | Norwich | 2018 |
| EC English Oxford Limited | Cambridge | 2012 |
| EC Farm Contractors Limited | Peterborough | 2015 |
| EC Logistics Limited | Grays | 1991 |
| EC Ltd | London | 2005 |
| EC Serenity Coaching Ltd | Doncaster | 2022 |
| EC Training Ltd | Norwich | 2018 |
| Ec-Lab Limited | Reading | 2019 |
| ECA Certification Limited | Sevenoaks | 2007 |
| ECA Directors Limited | Beckenham | 2003 |
| ECA Secretaries Limited | Kent | 2003 |
| Ecacium Tech Limited | Beckenham | 2021 |
| Ecancer Limited | Clifton | 2013 |
| Ecare EYE Services Limited | Reading | 2016 |
| Ecatering Ltd. | Seaham | 2022 |
| ECC Truck Sales Limited | Norwich | 1998 |
| Eccentric Enterprises Limited | Birmingham | 1996 |
| Eccles Tooling Systems Limited | Halesowen | 2015 |
| Ecclesia Yachting Ltd | London | 2026 |
| Ecco Ltd | Harlow | 2008 |
| Eccoo Ltd | London | 2025 |
| ECE Cleaning Services Ltd. | Redhill | 2017 |
| ECE Yachting Ltd | Blackpool | 2023 |
| Ecelebrations Limited | London | 2001 |
| ECF Limited | Rearsby | 2014 |
| ECF Technologies Ltd | Chester | 2016 |
| ECG Plant Hire Ltd | Ascot | 2018 |
| Ecgba Ltd | Stourbridge | 2013 |
| Echelon Creative Ltd | Woking | 2012 |
| Echo Access Limited | London | 2026 |
| Echo Canyon Consulting Firm Ltd | Manchester | 2026 |
| Echo Contracts Limited | Manchester | 2023 |
| Echo Frontier Global Investments Ltd | Manchester | 2025 |
| Echo Machinery Co., Ltd | Beckenham | 2019 |
| Echo Point Support Solutions Ltd | Manchester | 2026 |
| Echo RTM Company Limited | Hove | 2023 |
| Echo Valley Ltd | London | 2025 |
| Echo Yachting Ltd | Blackpool | 2023 |
| Echobeck Limited | Dagenham | 2025 |
| Echobush Limited | London | 2012 |
| Echocraft Communications Ltd | Doncaster | 2025 |
| Echoera Media Ltd | London | 2026 |
| Echoes Marine Ltd | Bromley | 2026 |
| Echoforge Developments Ltd | Doncaster | 2025 |
| Echomain Limited | Bridgend | 2025 |
| Echonat Ltd | London | 2023 |
| Echopeak Analytics Ltd | Doncaster | 2026 |
| Echosync VR Ltd | Carlisle | 2025 |
| Echovale Media Ltd | Doncaster | 2026 |
| Echox Limited | Brighton | 2021 |
| Ecigologist Limited | Fareham | 2013 |
| Ecite Ltd | Clifton | 2019 |
| ECJ Joinery Holdings Ltd | Tadworth | 2012 |
| Eckley Limited | | 1995 |
| Eckom Auto Parts Limited | Kenilworth | 2010 |
| ECL Civils Ltd | Loughborough | 2021 |
| ECL Contracts Limited | Windsor | 1992 |
| ECL Infrastructures Limited | Loughborough | 2019 |
| ECL Investments Limited | Windsor | 2009 |
| ECL Manufacturing Ltd | Cradley Heath | 2025 |
| Eclair DU Vanille Ltd | London | 2021 |
| Eclairer Limited | Bishop Auckland | 2014 |
| Eclectic Supply Co Limited | Henley On Thames | 2014 |
| Eclipse Accounting Limited | Lee-On-The-Solent | 2018 |
| Eclipse Auctions Property Limited | Chipping Norton | 2023 |
| Eclipse Building & Electrical Services Ltd | Preston | 2014 |
| Eclipse Business Dynamics Limited | Uckfield | 2004 |
| Eclipse Crew Limited | Brighton | 2025 |
| Eclipse Cricket Ltd | Wakefield | 2020 |
| Eclipse Diagnostics Ltd | Swadlincote | 2007 |
| Eclipse Equity Limited | Chipping Norton | 2022 |
| Eclipse Financial Solutions Limited | Barnstaple | 2005 |
| Eclipse General Trade Services Limited | Coventry | 2006 |
| Eclipse Lounge Limited | Taunton | 2008 |
| Eclipse Photography Ltd | Birmingham | 2016 |
| Eclipse Property Maintenance (Wokingham) Limited | Wokingham | 2013 |
| Eclipse Sports Therapy Limited | Braintree | 2014 |
| Eclipse Tools Limited | Sheffield | 1997 |
| Eclipsed World Limited | Beckenham | 2023 |
| Eclipseengage Entertainment Ltd | Edinburgh | 2026 |
| Ecloudy Limited | Cambridge | 2022 |
| Ecls 2025 Limited | Wallsend | 2007 |
| Eco 10 Limited | Watford | 2017 |
| Eco Alliance Limited | Gateshead | 2020 |
| Eco Architects Limited | Exeter | 2008 |
| Eco Asset Holdings Ltd | Harrow | 2022 |
| Eco Balanced Ltd | Swansea | 2011 |