5FP
If you are in my sectors [domestic airspace] I don't consider myself to be in any way a policeman. If you volunteer information that you are not RVSM equipped for example, I will issue clearance accordingly. Occassionally we receive contradicting data, or incomplete data, which requires us to ask for clarification......this could be to confirm route/requested level/8.33 capability/RVSM status. I would assume [deadly sin in ATC] that Shanwick would ask in similar circumstance. Personally I trust in a pilot's competence and professionalism not to ask for something he/she is not entitled to.