 He edited the Journal of the Statistical Society of London (now the Royal Statistical Society), 1852–6 and was its president, 1873-5.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.