The AAW registration is one of those given to vehicles who have had theirs sold or transferred away. My Series 2 had one when I got it, since got one of those Scottish leftovers, but at least it is true age related.
Sorry I can't answer any questions on this vehicle. I didn't discover it, and only roughly know where it is. If anyone has a passion to see it, I can make some further enquiries. But it is in North Herefordshire somewhere near the A44.
Rob.