Have you never even tried wildcamping? I did it all over the UK for a couple of years - there are several counties which publish available CP for MHs, but generaly I just pulled up on a verge, away from houses and gateways.
What is the problem?
Speaking as ex what are now called expeditionary forces, I'm firmly of the view that there's no such thing as wild camping in a motorhome (or a caravan or tent for that matter)! Bivvying, that's wild camping but camping off grid in a motorhome isn't wild.
Me and my colleagues (who are ex RAF Support Helicopter, Fleet Air Arm Junglies or Army and used to bivvying), were discussing how people refer to off grid camping as wild camping, the conversation went roughly like this:
One of the team mentioned somebody had been parked up in a verge near them in a motorhome for a couple of days...
Me: "Some motorhhomers call that wild camping".
After much guffawing and scoffing (which went on for a long time), the conversation carried on like this...
"But you're in a motorhome, you're not freezing your knackers off, getting wet, getting trampled by the local wildlife and you don't have to dig a scrape to have a poo!"
"I know" I replied,
"What's so wild about that"? they asked,
"You don't have lecky or water" I replied, matter of factly,
"We refer you to our earlier comment, you're not freezing your knackers off, getting wet, getting trampled by the local wildlife and you don't have to dig a scrape to have a poo!" they replied,
"I know" I replied,
"So there's nothing actually wild about it" they pressed,
"Not really" I replied,
"All of those times you had to bivvy out on Salisbury Plain or Stamford or Otterburn you would have killed to be tucked up nice and warm in a motorhome wouldn't you"? they asked,
"Absolutely" I replied,
"And you wouldn't have called that wild would you"?
"Nope"! I replied,
"So what do you call the type of camping this bloke (referring to the motorhomer parked up in the verge), was doing wild camping would you"? they asked,
"No, at best, it's off grid camping" I replied.
Some still scoffed at that but we moved on to something else after that.
But like them, I'm ideologically opposed to calling off grid camping wild camping. I suppose the only wild bit is getting rid of your black waste but it's still not the same as digging a scrape is it?
I guess it's all about perspective really. I must say I don't miss the taste of hexamine in my food either.
Apart from that, the wonderful MrsWez is against the idea and wouldn't settle and if she's not a happy camper, I won't be (she's all right with aires and FP, taking the view that you're meant to be there).