I am currently doing my PGCE. the interview, one to one with the tutor, was very relaxed and I was honest about my views on teaching and what it meant to me. most importantly I was able to get across the reason WHY i wanted to be a teacher because I’d been told to prepare for that question.
the other major thing covered in the interview was my subject knowledge, what I knew, what I didn’t etc. againl I was honest and said I needed to refresh some things but felt prepared to teach up to KS3 at that point and with a bit of studying I am now teaching upto GCSE KS4.
The work load is intense and at times you will want to quit but as long as you are organised and prepared you will be ok.
Good luck, any specific questions, drop me and email (in profile)