 Cull is past president of the International Association for Media and History (2004-2019), and has worked closely with the British Council's Counterpoint Think Tank.He sits on the board of the Public Diplomacy Council and is a Fellow of the Royal Historical Society.In April 2008, Cull's University of Southern California program was a co-winner of the Benjamin Franklin Award for Public Diplomacy, awarded by the U.S. Department of State.