Your help will be greatly appreciated.
In my interview, they didn't once mention any of the extra curricular activities in my personal statement and mine are fairly interesting (I compete on a GB sports team). Other universities may be interested but it is of no interest to Oxford. They did however, ask about some volunteering I had done that was specifically related to my course (volunteered at an Epileptic school and I am interested in Neuroscience). Not only did it demonstrate an outside interest in the subject but it acted as a platform for them to come up with some questions to test how interested you really are. Above all, the interview revolves entirely around their testing your existing knowledge and capacity for problem solving and thinking outside the box.