 The Society still presents the Guy Medals (in gold, silver and bronze) in his memory.He was vice-president of the Royal Society, 1876–7, and Croonian (1860) and Lumleian (1868) lecturer, and Harveian (1875) orator at the Royal College of Physicians.He was a founder of the Health of Towns Association and a member of the Commission on Penal Servitude and Criminal Lunacy.