All 35 professional engineering institutions who are licensed by the Engineering Council are members of E4E, together with the umbrella bodies which provide professional support.
- EngineeringUK
- The Engineering Council
- The Royal Academy of Engineering
- BCS, The Chartered Institute for IT
- British Institute of Non-Destructive Testing (BINDT)
- Chartered Institution of Building Services Engineers (CIBSE)
- Chartered Institution of Highways & Transportation (CIHT)
- Chartered Institute of Plumbing and Heating Engineering (CIPHE)
- Chartered Institution of Water and Environmental Management (CIWEM)
- Energy Institute (EI)
- Institution of Agricultural Engineers (IAgrE)
- Institution of Civil Engineers (ICE)
- Institution of Chemical Engineers (IChemE)
- Institute of Cast Metals Engineers (ICME)
- Institution of Engineering Designers (IED)
- Institution of Engineering and Technology (IET)
- Institution of Fire Engineers (IFE)
- Institution of Gas Engineers and Managers (IGEM)
- Institute of Highway Engineers (IHE)
- Institute of Healthcare Engineering and Estate Management (IHEEM)
- Institution of Lighting Professionals (ILP)
- Institute of Marine Engineering, Science & Technology (IMarEST)
- Institution of Mechanical Engineers (IMechE)
- Institute of Measurement and Control (InstMC)
- Institution of Royal Engineers (InstRE)
- Institute of Acoustics (IOA)
- Institute of Materials, Minerals and Mining (IOM3)
- Institute of Physics (IOP)
- Institute of Physics and Engineering in Medicine (IPEM)
- Institution of Railway Signal Engineers (IRSE)
- Institution of Structural Engineers (IStructE)
- Institute of Water
- Nuclear Institute (NI)
- Royal Aeronautical Society (RAeS)
- Royal Institution of Naval Architects (RINA)
- Society of Environmental Engineers (SEE)
- The Society of Operations Engineers (SOE)
- The Welding Institute (TWI)
