and flown in to controlled airspace without a clearance
How many of them were CAT and level busts (i.e. IFR traffic) as opposed to VFR ? For it to mean anything then they type of flight needs to be mentioned.
We were once being vectored by London Control....Suddenly this supervisor comes on the blower and says "Callsign....do you have a navigation problem"....to which we replied "No", then he came back all condecending and said "you have just infringed an active danger area".....to which we replied " we were just flying the heading given to us by the London controller"....Then it went quiet and sheepish then, handed off to someone else. Of course we never reported anything....