What do you want to use a camper for? Summer months or year round? Occasional use or multi week / months? What's your budget? Hard to give you advice without this info. Maybe one possible solution is to get a van with windows and that's been internally clad, or better still a caravelle) and add a RIB or rock and roll bed and a slidepod http://slidepods.co.uk
If your budget won't stretch to that and you're looking for best value I'd be looking at a low mileage t4 that's been already converted.
Example: https://www.ebay.co.uk/itm/192292010417
What do you want to use a camper for? Summer months or year round? Occasional use or multi week / months? What's your budget? Hard to give you advice without this info. Maybe one possible solution is to get a van with windows and that's been internally clad, or better still a caravelle) and add a RIB or rock and roll bed and a slidepod
http://slidepods.co.uk
If your budget won't stretch to that and you're looking for best value I'd be looking at a low mileage t4 that's been already converted.
Example: https://www.ebay.co.uk/itm/192292010417