If you thought that Monocock's disagreeable experience at Popham was bad, just wait until you get your collar felt by the Official Spotter Police:
http://news.bbc.co.uk/1/hi/england/london/3682329.stm
Imagine spotters armed with ID cards and licensed to commit jobsworthery. All they need now is for someone to give them hats. They've already got the clipboards.
I'm not really sure why spotters are referred to as "aviation enthusiasts", as in my, thankfully limited, experience of them, they are interested only in the letters/numbers and have zero interest in the machines themselves.