Bradup's a bit of a strange one.
For a start there are discrepancies on the grid ref from different sources, some place it in the ploughed section of the field, others put it a little more to the west. Then there is the pile of half a dozen or so stones close to where the circle was, I've read and been told that they are/aren't the remains of the circle. You should get yourself up there Moth and take a look ;-)

According to Paul Bennett's book there were 12 standing stones recorded in 1929 and prior to that a chap called Collyer (wahay!) mentions 18 stones, there is also a plan of what the circle looked like with a possible alignment with Black Knoll.

-Chris