Leanne Coomber witnessed the rockfall. She told UKC:
'As far as I am aware no one was injured and the people climbing below at the Diamond Slabs appeared to be OK as we could see that they continued climbing. However, I do believe it is likely to have taken out some routes on Blacknor Central. I was climbing on the Battleship Cliffs at the time and the noise was incredibly loud. Quite scary watching it fall - I'm just so pleased no one got hurt.'
This post will be updated once full details are established.
UPDATE: Mick Ward kindly ventured down to the site to report back -
'There has certainly been a rockfall, seemingly quite localised and, from what I can see, no routes were affected. Specifically, some blocks about twenty feet to the right of the start of Valerian have collapsed. There was the usual mess on the path. I've cleared up the worst of this and heaved some blocks into the vegetation below. They should be (relatively!) OK here. The path is perfectly passable. I've been all the way round to Monsoon Malabar to check there aren't any other rockfalls. There are none.'