Back in Llandudno, bag a vintage Rover (8)
I believe the answer is:
vagabond
'rover' is the definition.
(I know that vagabond is a type of rover)
'back in llandudno bag a vintage' is the wordplay.
'back' is a reversal indicator.
'in' says the answer is hidden in the clue.
'dnobagav' is hidden within 'llandudno bag a vintage'.
'dnobagav' written backwards gives 'VAGABOND'.
(Other definitions for vagabond that I've seen before include "Homeless wanderer" , "Beggar" , "Traveller of dubious character" , "An idle or dishonest vagrant" , "Hobo" .)