It should have said in your email inviting you to the interview where the interview would take place. If it doesn't I would recommend contacting admissions on 01695 650950 or [email protected] to ask about the location of your interview.
I would imagine it will be in the Clinical Skills and Simulation Centre as this is where I know they have held Medicine interviews in the past however I would recommend checking for sure.
Good luck!
Katie - Second year Educational Psychology student