20th International Geographical Congress, London
Issue Date - July 1, 1964
SG 651 - Flats near Richmond Park (Urban Development), 2½d
SG 652 - Shipbuilding Yards, Belfast (Industrial Activity), 4d
SG 653 - Beddgelert Forest Park, Snowdonia (Forestry), 8d
SG 654 - Nuclear Reactor, Dounreay (Technological Development), 1s 6d