Now possible to do as a DWS - thanks Ken and Andy! Traverse from London Bridge as for The Watch to Thunder Hole.
Swing across the zawn on the fixed rope and grab the rope on the other side (high tide useful as there are rock below you). Reach rwards to pockets and then step up to the traverse line. Traverse rwards to obvious ramp feature and descend diagonally to the arete and ledge on the R (6b+).
Descend again to large ledge and then climb up and then across the slab (easy but slightly concerning), descend the groove and truck along to a ledge below the final impending section of wall.
Head R between overhangs (tricky) until it is possible to move up to a ledge then descend to the quarry. (6c).
Walking out is a little prickly but relatively obvious.