A bit of an update......
After dealing with the incompetence of DVLA last year and their can't do attitude I gave up trying to register the Monster.
Fast forward to June 2019 and I still don't have any bike on the road this year yet, not even interested for some reason.
The last DVLA contact was to get a letter from DUK to confirm the age of the bike and HMRC for a NOVA certificate HMRC told me there was already a NOVA issued for that VIN and DVLA have it, DVLA said they don't !
Anyway, ready for a fight with DVLA again and armed with all the info needed now I sent everything away again.
Within 2 weeks I received a V5, finally ! No questions no delays just first registration.
Year related plate (54) and first registration as 1st July 2019....result.
Having spoken with insurance prior to this they informed that a year related plate would be better to identify the correct model.