I was relatively calm while waiting for the interview. My interviewers were very easy to talk to and didn't want to 'drill me' at all. Two of my three interviewers didn't seem hesitant to give me facial-expression feedback to my answers (whether it was by smiling, nodding, or even laughing at a bit of humour I managed to end with). The third interviewer seemed more dominant and gave me the impression he tried to rush me out of the room. Though on the whole It was hardly a nerve-racking experience and they made it quite clear that they genuinely wanted to get to know the person behind the application as opposed to deliberately putting me in a stressful situation.