Howdo Johnny
The Hulleys site was recorded and mapped by Frank Elgee although I think it may have been first recorded by Knox, I'm working off memory here so may not be 100% correct. The site is in the valley close to Hulleys farm. I think a later evaluations cast doubts on whether the strutures there could be classified as a stone circle or more of a farmstead type structure. If no one else pipes up I'll give you a more definite answer in a couple of weeks when I can access my books.

cheers
fitz