Sadly this is not just a BHX problem, when arriving back at BZN have heard the tannoy message stating that those travelling to LHR and LGW have to get changed as they would not be allowed to fly onwards from those airports in uniform. I don't know if this is just a BAA thing or not, but it's still a poor way to treat people. As for myself and others like me, we just look forward to the 12 hour bus journey North from BZN (in uniform usually). PC and EO has gone mad.