Evan Smith is Visiting Fellow in the College of Humanities, Arts and Social Sciences at Flinders University, Adelaide, South Australia. He has written widely on political extremism, social movements and national security in Britain, Australia and South Africa.

Matthew Worley is Professor of modern history at the University of Reading, UK. He has written widely on British politics and culture in the twentieth century. His latest monograph, No Future: Punk, Politics and British Youth Culture, 1976-84, was published by Cambridge University Press in 2017.