I assume you are looking at starting courses in 2014/15?
I can speak from the English side of things, I'm just about to start my second year of English Literature. I had two different experiences two years running at Warwick. The first year I applied I didn't get an interview, the second I did (and got in!). I think from my own experience you have to just have something a bit more than just your A Level texts, and have a way of demonstrating an interest in English that isn't through the classroom. The statistics they give are scary (I think in my year it was around 4000 applicants, 400 interviews, 100 places for English), but that's not to say it's impossible. As long as you know your personal statement inside out, are prepared for anything new on the day (such as being asked to talk about an unseen poem) you should be ok. My interview was really just a chat about what I like reading, and we ended up arguing about a production of Othello we had both seen. Others had short poems that they were asked to talk about in the interview, and some were asked 'ice breaker' questions such as 'pick a book from your personal statement and come up with a book cover for it, why did you choose this etc'
On my personal statement I didn't actually write about many books, surprisingly. I talked more about literary concepts which interested me and ideas I wanted to pursue, as well as things like being involved with the school newspaper etc. That was more because I'd basically listed books in my first application and that didn't work. That said, one of my friends wrote about numerous books, what she herself describes as 'just a list', but because they were not your stereotypical books for A Level, she got in and she is also doing very well. It's a difficult process, no doubt, but not one that is impossible to achieve within. It's that same old line: make yourself stand out, and don't lie. But I remember the Director of Undergraduate studies saying at my interview day, that they are there to help you get in, not to cherry-pick you out. If they can see potential, even if you interview horrifically, then you could be in with a good chance.