Like Brian I live close by and have visited many times over the years. A friend of mine was even their mechanic for a number of years. This was an eclectic mix of cars with a lot of mundane models but it was fascinating seeing them together and taking a trip down memory lane. I expect a lot of them were gathered up at the "needs work but too good to scrap" stage of their lives.
Many of the cars I would class as sound restoration projects. The Volumex HPE had disappeared on my last visit but the Fulvia Coupe was still there. I had a sneaky feel under the cills.....as the Kellogs advert goes "They're Crunchy".
A lot of the bikes on the other hand looked seriously desirable.