I imported a Legere from NL last year and the HMRC / DVLA process was very straight forward – on the road in under two weeks. Only cost was registration £55. No changes were required to the car. My advice would be to get the DVLA pack in advance of collection, the NOVA declaration to HMRC is very quick; you will have to send the original registration document to DVLA, make a copy of it as it won’t be returned.