Professor Diarmaid MacCulloch, Kt, FBA, FSA, FRHistS, gives the 2018 David Nicholls Lecture, on the theme: 'The Politics of Sex and Gender in Christian History'. Diarmaid Maculloch, Professor of the History of the Church at Oxford, is a distinguished historian, whose many publications include A History of Christianity: The First Three Thousand Years (London, 2009), which became an acclaimed TV series, and most recently, a biography of Thomas Cromwell (London, 2018).