Being invited to attend a Professional Review Interview is a good sign as it means you have demonstrated your competence and commitment sufficiently on paper. The purpose of the interview is to confirm that your experience is substantially as described in your application documents including your Professional Review Report.
Interviews take place at IGEM House located in Kegworth in the East Midlands, and online; and are conducted by two, IGEM trained and professionally registered engineers who will ask you questions about your report and the relevant competency and commitment criteria.