I've read this post a dozen times now and I am still trying to get my head around how it applies to a motorhome parking overnight in a pub car park where there are no facilities (toilets, EHU), there is no camping behaviour (eg chairs and tables, awnings) and no money has exchanged hands for said parking. The only difference between a car and a motorhome being in a car park overnight is that the motorhome is occupied with, probably, people sleeping.
So are we now implying that sleeping is potentially illegal? What have we come to in this country?
My view is that this law is meant to apply to farmers and the like who want to open a field for campers over the summer months. If its scope spills over to pub car parks then it's a definite case of unintended consequences.