whowhenwhy - perhaps, then, it's time the UK military adopted the same ATC and RTF procedures as the UK's majority airspace users?
Or perhaps we should bring back 'listening out on this' as the minimum 'service'? Quite often under FIS I just want ATC to STFU unless called......
So to get round it, I just say "Squawking 7000, to en-route, good day". And then just stay on the frequency with the volume turned down....