In reply to samsamsam:
John Dunne did the route and gave it 8c+/9a. This aroused the interest of the great and the good of Sheffield (or, in this case, Jerry Moffat), who tried the route and thought a grade of 8c would be more appropriate. However, whilst working the route Jerry pulled off a 'crucial' hold and thought the route was much harder as a result.
John returned to the route (with Dave Simmonite taking pictures IIRC) and found that the sequence he used was unaltered, i.e he hadn't used the crucial holds. Although out of shape by this time I believe he repeated the crux moves, with Dave SImmonite as a witness, although what qualifies Dave to determine which are the crux moves on a 9a I don't know.
Since then I don't think the route has had a whole lot of interest. John's 'Totally Free' is unrepeated as far as I know as well, although again there is some uncertainty about whether the top roof has lost holds since John did it.