Bennett had wide-ranging interests: he was a member of The Primrose League, and their Guest-of-Honour at a dinner held on 5 March 1979 in the Cholmondely Room, House of Lords, hosted by The Lord Mowbray and Stourton. He was sometime President of the Anglo-Turkish Society - he had an Honorary Doctorate of Law from the University of Istanbul, 1984, and was granted the Freedom of the City of Ankara in 1992. He was a member of the Anglo-Polish Society, the Council of the Baltic Sea States, the Estonian Association, the Anglo-Jordanian Society, the Pakistan Society, and was a Vice-President of the European-Atlantic Group. Between 1959 and 1984 - the year he was also made a Freeman of the City of London - he attended twenty of the yearly Bilderberg Group conferences. He was a member of the group's Steering Committee. He was the recipient of a small catalogue of foreign honours and awards of merit.