Wolvo if you would like heaps of useful information on joining the RAF you should look at E-goat. They have got it sorted when it comes to this sort of advice. The link is here
http://www.e-goat.co.uk/forums/forumdisplay.php?f=144
What you must understand about the Military forum of PPRuNe is that it is a bit like an online RAFA club where ex old Officers and Airman
(You know who you are|l) meet to discuss the good old days and sneer at the yoof of today for daring to ask stupid questions about joining up. Unless you ask about the dreaded asthma of course which if you have it, or had, then tough go and work for Tesco. Anyway I hope you find the link useful.