My interview day was in early December. I arrived at the college fairly late the night before and was shown to accommodation by a current student. The next day itself started with an interview in the morning with the man who would have been my future Director of Studies (in his office), a short break followed by a written test (about an hour long, in a small hall with one other test-taker and an invigilator). I then walked into town for lunch, before a second interview at St. Catharine's, with a fellow and a PhD student. Both interviews lasted about 30 minutes.

The first interview included a test of my Latin reading ability (thinking out loud was encouraged), some questions about my personal statement (specifically talking about the usefulness of classics in studying more modern history) and analysis of an image. I felt slightly anxious (and sometimes a little foolish) during the interview - in retrospect I could have prepared better around my personal statement especially - but the interview went generally well.

The written test was the most relaxed moment of the day - a single passage to translate, which was easier than any of the A-Level exams I'd seen before. I confidently finished it in half the time and checked it thoroughly.

The second interview was a discussion, prompted by a few comments in my personal statement, about the roles of both interpretation generally and translation specifically in the study of classics. I still felt a little out of my depth and challenged by the discussion (especially since it was two-on-one), but I generally enjoyed taking a wider look at the subject and discussing issues of historical bias and the imperfect nature of translation. This was probably the best part of the day and was actually fairly similar (in terms of the way the discussion flowed and went through questions) to many supervisions I've since had.

My school organised a practice interview (over the phone) with an ex-student, which was really close to the actual thing and by far the most useful specific preparation. Other than that, doing some reading beyond the curriculum also helped.

Above all, I wouldn't worry or overthink about how you feel the interviews went - you can't tell what the interviewers are thinking or how hard they're pushing you compared to everyone else. You definitely need to know your stuff when it comes to what you're already studying (at least, more general things like language, not necessarily 'facts' or specific topics) and have a healthy interest in topics beyond that curriculum, but otherwise I'd say you should treat the interviews as rare opportunities to discuss your academic interest with people who know the subject really well.