John Bew is a Reader in History and Foreign Policy at the War Studies Department, King's College London, a role he has held since 2010. His academic career at King's College London began in January 2010 as a Lecturer in War Studies, a position he held until March 2012.

Prior to his tenure at King's College London, Bew was a Lecturer in Modern British History and Director of Studies for History and Politics at Peterhouse, Cambridge. He held this position from September 2007 to January 2010.