I'm starting adult branch in a few weeks time - just off the top of my head my questions were, what is the role of a nurse? why is having access NI clearance important? Tell me about a challenge you have faced and how you managed it. Why is communication important? (cant remember anything else I was asked) but if you are aware of something going on in nursing news right now, like pressures of more work or tackling obesity, they might ask something like that. Also, your skills, how they would make you a good nurse, importance of record keeping, fit in any experience you have had etc.
Have a look on older posts here - thats where i got most my preparation questions.
I was so nervous before the interview, but honestly, the people were lovely and will encourage you.
My biggest tip for any interviews is to THINK before answering. They dont mind you having a wee 5 second silence to make sure you say the right thing. Good luck!!!