I went with my neighbour. He was on stand with the MK2 Astra GTE club. I say Wiltshire classic Ford stand. They had about 5 cars there.
I've never heard of the show until recently. It seems to be the place high performance cars see how good they are at hillclimbing.
http://retroridesgathering.com/
I saw lots of Fords and plenty of RS car were there too.