hi .complex question . i theory if you are going to take the vehicle abroad for more than 12 months you have to officially export it .fill in section c on the v5 you should then hand it in to dvla and get in return a v561 certificate of permenant export.
is staying in eu countries you may have to check 6 months i believe is the longest its allowed to stay with out importing .
this brings in problems as you may have to be a resident of that country . (another can of worms )
you could keep travelling going in and out of different countries .
insurance well you are in hot water. if you dont have addresses here then you possibly cant get it .even though any
insurance took out in any eu country must contain the minimum ins cover throughout the eu. they may not want to cover you as a full timer living abroad in the camper.
also mot will probably be required . there are exemptions depending on the vehicle you use etc.
many tell lies or give address of friends . drive abroad illegally and hope they dont get caught.
you may be able to buy
insurance abit like border
insurance that gives short periods of cover.
lots just come back re mot .get uk
insurance etc. remember even having a driving licence requires a current address .
are you keeping property here ?that can help.
it is a major problem for many living fulltime in campers here never mind abroad .
there as been instances in spain where un taxed uk vehicles have been uplifted and taken away . anywhere you drive in the eu on uk plates it must be of legal condition all the time .just as if it was in uk.