If you can get the bill of sale from when it was new from
supplying VW dealer, that would over ride any V5 errors.
Yeah ,
sent them a copy of the original handover sheet signed by the dealer and the customer, and also a copy of the service book for the first PDI done by the UK dealer. Plus the telephone numbers of VW Care and VW Dealer Salesman.
Also sent a copy of the HPI that I done on the car which seemed a bit confused about the reg plates of the car.
The car has only had 1 private plate but the HPI also refers to the previous car that the private plate was on and that reg being on my car

?!. There may have been an error/confusion on a previous reg transfer to the gti.
In the past I have noticed that you can't always only bank on all of the HPI information as there is sometimes a minor error or it is not quite upto date. For example, the private plate was removed from the car early december but late January some companies incl. the AA could not find the car by its current reg.
I also have a copy of the last reg transfer on the car, but didn't send this as I didn't think it was relevant (and forgot

).