What happens after applying for IEng?

Incorporated Engineer (IEng) professional registration - what happens next and the outcome/decision.

Internal review

On receipt of your application for IEng, your application will be:

  • reviewed by staff;
  • reviewed by experienced and trained members.

They will consider whether or not you have provided sufficient evidence for your application to progress to a professional review interview. You will be advised if any further evidence is needed.

The application process includes peer assessment by registered engineers who are IET members. These members are not IET staff, but volunteers who have been trained for this purpose. Please familiarise yourself with how we use your data

Your interview

All applicants for IEng professional registration will be interviewed. The interview is conducted by two members of the IET. You will discuss many aspects of your work which demonstrate your personal contribution and competence. At the start of the interview you will be asked to make a presentation lasting no more than 15 minutes and the overall interview will last approximately one hour and 15 minutes. For further guidance on the PRI, please watch this short Professional Review Interview video which will give you an insight into the process and read what to expect from your professional review interview.

The interview confirms your overall level of competence as a professional engineer. The interviewers will ask you to expand on the information in your application.

Your interview can be held at various locations worldwide.  If you have special requirements, please let us know so that appropriate arrangements can be made.


Successful applicants for IEng will receive a letter to confirm the decision, together with notification of Engineering Council fees which are collected by the IET on behalf of the Engineering Council. Once we have received your payment, which should be within three months, your details will be submitted to the Engineering Council for registration as an IEng. You will receive a certificate from the IET confirming your IEng registration and date registered. Your registration number will be sent to you by the Engineering Council once the registration process is complete. Only upon receipt of your registration number will you be entitled to use the designatory letters IEng.

Should your application be unsuccessful you will receive a letter advising you about the additional experience or knowledge required. You will also be referred to a professional registration advisor who will be able to provide you with guidance and support. In some cases a different registration category may be recommended.

Need help?

You may find answers to some of your questions in the professional registration frequently asked questions.

We will do as much as we can to support you with any aspect of your application, so please get in touch if you need help.


Tel: +44 (0) 1438 767 333
Email: profreg@theiet.org