Sounds like you are ready for a change Bonesie, just hire a smaller campervan maybe like the newer VW Classic one's with the Golf engines but nice lines and not humungous.
These guys are in Guildford and have a variety to chose from.
We never holiday in the Plus 8 as Heather doesn't like the ride so it's always a tin top with aircon/or roll back roof in her car and hotels or self catering but absolutely nowhere without water closets and a shower.
We don't do trains, planes or coaches.