Aircraft used in military, customs and police services shall be deemed to be state aircraft........
I'd like to see you fly your state aircraft through UK airspace without following the rules of the air. Can you imagine the consequences.
How do you think the RAF conducts it's activities in the London FIR? How does a Typhoon fly all the way from Coningsby to the South West of England, to Wales, to the Lake district, into Scotland. They talk to military ATC.
An American KC135 heading for Mildenhall or even Ramstein in SW Germany, Do they just fly through the London FIR without following any rules what so ever? Do they not talk to Civil ATC and military ATC for an ATC service to keep them separated from other aircraft?
The concept of Air Traffic Control is complex and airspace is busy. Without ATC, without rules, without ICAO SARPS and rules of the Air, there would be utter chaos.
So, come on tell us, what's your experience and knowledge of UK airspace and Rules of the Air?