English: Plaque commemorating the world's first implantation at, London, England. Note: Harold Ridley and his theatre nurse (Mrs Doreen Ogg) both described the first implantation date as being on 29th November 1949, and when in 1999 Ridley was asked whether the IOL's 50th anniversary should be in November 1999 or February 2000 he chose November and attended the celebratory banquet organized by Rayner to mark the occasion at London's National Science Museum on 29 November 1999. Public space in public (NHS) hospital plaque commemorating world first at the hospital