In reply to MarkC:
http://www.hotpud.com/ukroutes/RouteStats?i=1396
with photo of my mate on the crux, and comment by another geezer.
Personally: softish E1, all in that traverse on the front of the flake, boldish, with one excellent nut in the middle. Not really one to fall off, but it is all in balance, just. The rest is very meandering and like Mr Reid says, you do need a guide, it is far from an obvious line.