So it has been registered in a European country previously.
It should be a simple case of obtaining an age related plate put on the bike issued by DVLA on a new V5c
Got a German R1M from 2015 registered no problem . Just sent them a copy of the German title papers (Zulassungsbescheingung Teil).
Have also exported a car back to Paris , sent a receipt (confirming sale and date of purchase)and the V5c Original and sent the export document slip to DVLA, to confirm permanent export .