I am almost certain that the call was symbolic of some sort of official slap on the wrists. I have absolutely no doubt that the Man From The Ministry was who he proclaimed to be. I take an experience such as that as a positive thing; maybe it will make me think harder about the environmental effect of my aircraft. It might have even given me a 'check' on the leash and will lead to an improvement in personal standards.
I will turn it into a positive learning experience for myself. For that I thank Mr CAA Man.
The fact remains, however, that the allegation was ludicrous in the extreme. Nice weather coaxed lots of people into the air that day - Perhaps I was just the one that got singled out? Whatever lay behind it, there was clearly very little objective investigation made.