In reply to FiveFiveSix:
I am only suggesting options worth looking into, I am in no way suggesting you should jump off these.
Raven Tor - Millers Dale
High Tor - Matlock
Goredale Scar
Kilnsey
Malham Cove - done before
Cheddar gorge - done before
Wintours Leap - Chepstow , if there was a gap in the trees?
The slate quarries at dinorwig have been done but there might be other jumps still to do.
I cant think of many mountain crags that remain vertical for long enough.
Maybe some sections of cloggy (Clogwyn Du'r Arddu) in Snowdonia.
My knowledge of the lakes and Scotland is poor maybe something there?
I am only suggesting options worth looking into I am in no way suggesting you should jump off these...