In reply to PeteH:
As far as I knew once, there were four 7b moves on routes in the Peak.
Smoked Salmon, Bamford - insane "slab"
The Groove, Cratcliffe - dynamic move to horrible pinch and try not to barndoor (hailed as "using the english tech grading system correctly for the first time in recent hard grit")
A Little Peculiar, Roaches Lower Tier - Single-handed no-footed mantel
Samson, Burbage South - Dyno from pockets to awful sloping rail
I think Peculiar has never been repeated and Samson is now a bouldering problem, but there it is.