I need to be able to stand up in my bus & also need fixed bed & toilet etc so that meant a larger bus but certainly not shiny & new tho😉
As you say a smaller van makes sneaking about so much easier....
I have no problem finding places and access to carparks is not an issue. Maybe the problem isn’t with authorities but the vehicle you have chosen for wildcamping. I chose a VW T5 because I want to wildcamp and not have issues with height barriers or narrow roads, dirt tracks and accessing out of the way places. Horses for courses I think it’s called. Some of the wonderful places I stay couldn’t be accessed with nice new motorhome without damaging it or being able to turn it around to get out.
I would rather buy a good tent and travel in my car Caledonia. My mate has what you have and it’s simply not for us. And apart from barriers I have never had a problem driving my motorhome anywhere. Even down in Cornwall where I had to ask my missus to breath in a couple of times.😀
The Lake District was challenging, but I just love a challenge.