Keele are lovely! I had my interview in 2010, so it may have changed, this is just my experience.
The interview itself is rather informal, they will ask a couple of simple questions like why pharmacy, why Keele, tell me the difference between hospital and community pharmacy etc.
As for the questions, there's some simple dosage calculations to work out and there was a question where you needed to pick out the ethical issues in a topic. Pretty straightforward.