I was interviewed by two psychologists (they split the question schedule between themselves). They were sensitive to my performance anxiety and made an effort to put me at ease. They also helped me to do my best by asking prompting questions. At the end, I was given the opportunity to revisit questions with a view to adding more substance. The interview style was formal. They asked approximately eight questions. I sat the interview over a year ago so cannot remember all of them but will share the ones I do!