No use doing a survey here; 99% of UK pilots don't read this stuff.
I've seen loads of illegal VFR flight in France and Spain. It's also commonly done in ultralight types, which is why so many of them are IFR equipped these days.
Which does little to justify the IMCR. I to have seen my fair share of illegal 'VFR' flight mostly by Brits blagging out of places.....
Which also does not justify the IMCR.
I could really do with some hard facts.