I had an interview for Flybe this week
. There were 4 interviews on the day I was there so things are happening.
Can't offer much advise on how to get yourself an interview but when you do find yourself down in Exeter, make sure you are up-to-date on Flybe history/present/future, CRM/SOPs and your technical knowledge. The tech questions aren't too bad but if it's been a while since you did your ATPLs it's worth a refresher! Also have a think about some tough situations that you have found yourself in during your previous working life as this will help to answer some of the teamwork/determination/adversity type questions you will get.
I hope this helps.