Further to my previous post about a neighbour using his field shelter for vehicle storage I forgot to add that he had also put up a polytunel, also on agricultural land, and is using this to store another unroadworthy car. This polytunel has never been used for cultivation, but used for vehicle storage from day one. Starting to look like a scrappy yard down there....Is this permissible? I'm a bit worried that this is the future as he has a number of garages that he has various bits of cars in, and adds to them on a regular basis.