Mole
What you have to remember is that in a lot of the smaller airlines flying staff have there bases changed at short notice and that they might find there home at the other side of a continent from the place that they report for work.
If the CAA permitted it ALL airline staff with a valid ID would be welcome on the flight deck of an aircraft that I was in command of.
The big problem is that the powers that be wont let me because they dont trust the ID screening system that they have put in place .
The security tail is wagging the dog and putting flight safety at risk but more of that latter.