thanks for these addresses. I'm going to write a letter to these people. see what happens.
thanks again 

It`s a hi from me 

I immediately sent a letter to the people in question. haven't heard anything yet, unfortunately 

The registration number UYP 618 or VYP appear in some old photos.

Have you found a photo with this registration number on it??

Hi not as yet and I have asked somebody who is digitising their 1970's and 80's albums to have a look, those GP hard tops were not very popular so assuming it had it back in the day it is easier to check.

Snoopy,
Thanx for your answer. 
I hope your friend find some pics. both from the hardrop and from the license plate or the buggy itself

The only photos i have from a GP MK1 with hardtop :





Do tou guy's have some pics from a GP MK1 with hardtop?