Thank you Worf, Chris and Peter for your replies, this is all very interesting to me.
At this stage after towing the vehicle from a barn/field with a tractor, I am simply trying to fill in as much of it's history as I can. It is after all a couple of years older than me, where has it been ...?
Looking at the patina on the registration plates, they have been on the vehicle for quite a few decades, so I suspect the registration number it has currently has been on it for the majority of it's life. I also quite like the 'A' suffix, whilst less desirable from a purely format point of view than a 3 + 3, there are after all very few 'A' platers around (or maybe not according to Peter).
I did try the V888 route some 12 - 18 months ago, and was probably too broad in my request and got caught in the GDPR preparation net, receiving the standard "We're sorry but we cannot help you" response from the DVLA.
Armed with the above I will try again and this time, as Chris suggests, be more specific in my request, and hopefully get a more sympathetic case worker.
First priority remains though to get an MOT for it (there are HOW many parts in the front axle ...?!
) and this is going to keep me quite occupied for a while yet (next spring I promise!!).
Once again thank you for the responses.