I recently went to RAF Shrewsburry and spoke to some pilots for a couple of hours, everyone gets an interview and the same tests, you just need to be in the top 0.5% and sell yourself well in the interviews
I assume you mean RAF Shawbury? As well as the above advice, not shooting yourself in the foot is also strongly advised.
If you do, no harm in back tracking and asking "did I just say RAF Shrewsburry? I mean Shawbury". If you have a human being for an interviewer (usually you do) they'll probably chuckle and put it down to interview nerves but equally should give you a bit of credit for having the confidence to own up to a mistake.