Did a potential new finish to Andy's Arete up at the Roof of Mantels, Derwent Edges back when the weather was briefly nice. Do Andy's Arete up to the slopey hold on the lip (the hold above Jon Barton,s left hand in the photo of Andy's Arete in the guide.) from here traverse the lip left to top out at the jutting prow.
Might well have been done before, but its worth a look if you are up there.