I used to have a Robin, it was fun in a terrifying sort of way.
I don't think there's any other car you can get onto two wheels quite so easily. I had a bike cop help me roll it back sticky side down one day, then sent me on my way without even a stern word.
There's a Facebook group with a "wall" open to posts, you could probably ask on there about quads.
The flyers list the postcode as DY13 0AA so I'd guess that's the right one.