I have also heard that if for example, you work for Airline XXX, and the current pass you hold then expires; you have to re-apply for another pass and go through the whole rigmarole anyway, regardless if you have worked for them in excess of the
"5 years"or not.
This opens a very lage can of worms I suppose, depending on what offences are on "The List" and as a previous poster has already stated, so much for the rehabilitation of offenders act 1974.
There is always the European Court of Human Rights I guess.
I'm sure they will deem a spent conviction as just that, otherwise there could be a lot of new openings for newbies/wannabes.