Get yourself to Aberdeen and talk to the chaps in the careers offices, see what's on offer at the moment. Take things one step at a time, if you apply and don't get in anywhere, you can then always go back to thinking about civilian training.
If you are lucky enough to be accepted, and get to fly heli's, you'll come out the other side with bags of experience and be in a better position for the more interesting jobs in the UK, EMS, SAR etc.