Don't assume for one minute that the police actually know the law - certainly not in the areas we are talking about.
A couple of months ago I had every on duty policeman within 30 miles turn up at the strip, sirens blazing. I was quietly washing the aircraft down when I found myself surrounded.
Turned out a 'concerned member of the public' had seen a plume of smoke from a bonfire, my aircraft landing, put two and two together, got a number much bigger than 4 and raised the alarm.
The gentlemen in blue uniforms (5 off in number with 3 vehicles) had deserted their patrol and stations and arrived at the potential disaster scene. They were somewhat disappointed that the anticipated days worth of overtime did not materialise. To assuage that disappointment they tried to make their visit worthwhile by inspecting the premises, my vehicles and discussing aeronautical law. Much like the thread starter they 'knew' lots of things, few of which were actually true.
It all ended reasonably well, if only because I could quote chapter and verse of the relevant legislation and my previous contacts with offical bodies notifying them of the strip's existance. Of course if one of my tyres had been short of tread it might have been different........