And they can and will do their utmost to stop you flying if they don't like what their database tells them about you when they input the data from your GAR.
And there's the rub!
Clearly that doesn't bother you, but I sit squarely in the camp that's massively concerned with what is happening to civil liberties in this country ... pressure for ever increasing periods of detention without trial, pressure for trial other than by one's peers, anti-terrorism legislation used by local authorities for snooping on individuals on matters nothing to do with terrorism, rights of entry to your property by an army of snoopers to see what alterations you've made, round-the-clock surveillance of, and issue of endless 'guidance' to, the prols (invoking very real Orwellian images) ... etc, etc.