To get the security pass at most major UK airports now, you need a 'Disclosure Scotland' statement and a letter from your present employer, confirming you're employed and require the pass. At least it was when I last renewed my pass. I don't understand what the previous employer has to do with it. Am I missing something here?
Your previous employer has to be careful what he says about you but should supply a reference if you ask for it. Only problem for him is, if he writes something about you which isn't true, then you have a hard copy of what he's said. You could always just ring him up/go see him and be nice and polite and ask for the reference nicely?
