I looked into this 2-3 years ago and it's not as easy to buy and then resell a TV and a caravan or a motorhome in GB or Europe as it is in the U.S. and Canada.
IF you have a friend over there that can handle paperwork, insurance & inspections before and afterwards it is a lot easier. In France you can "Lease" a used vehicle for up to 90 days and that might be a bit easier to do than trying to buy and resell.
I have a book on RV'ing in Europe, I will post the title
when I locate it again.