A plaque in memory of Ridley is installed in the gardens of his alma mater Pembroke College, Cambridge, which plaque reads: "RIDLEY’S WALK / This plaque is placed in memory of Sir Harold Ridley FRS 1906-2001 / pioneer of intraocular lens surgery, graduate & benefactor of this College / after whose ancestor Bishop Nicholas Ridley, Master 1540-1553, / martyred 1555, this path is traditionally named".