how they select applicants from interview performance:
in each category they score applicants out of 10
- clear and genuine interest / enjoy talking about bio
- ability to describe a piece of biology and discuss it
- problem solving
- making reasoned arguments based on evidence
- academic potential
they then rank u and pick first X applicants to give offers to (X=number of places). you can still get an offer from your second college and even if not, if both colleges or either one think you deserve to go to the university, will give you an open offer. (somerville biology tutor so not sure if it the exact same for all colleges)