I think its in Derbyshire, though possibly Staffs. When we stayed tehre we drove one day to The Roaches in Staffs and the next day we drove to Dove Dale. I think it was closer to the Roaches than Dove Dale.
The camping site was very basic and had a field with a stream running through it. The toilet block was on the other side of the road and I don't think directly opposite the camping field. I think you had to walk up the road a short way to the farm. It was in the middle of nowhere.