What to expect during a phone interview?

I sent off my application through UCAS last week and have already heard back from one. I have a phone interview next week from the university about the course.. and just sent in my transcripts as was requested, just three days ago.

I'm nervous and have no idea what to expect. Can someone who has got into a UK university please tell me what to expect? Thank you very much in advance.

Just saw that nobody's responded to your post.  Have you had the interview already? How did it turn out?

I would assume they just want you to go into more detail about your studies and that sort of thing, but have no idea! 

Let us know how it went.  What Uni's have you applied to?