 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.In January 2012, he succeeded Simon Anholt as editor of the "Journal of Place Branding and Public Diplomacy" (published by Palgrave) and continued in this role until January 2019.