Diarmaid MacCulloch is Professor of the History of the Church at Oxford University. His Thomas Cranmer (1996) won the Whitbread Biography Prize, the James Tait Black Prize and the Duff Cooper Prize whilst Reformation: Europe's House Divided 1490 - 1700 (2004) won the Wolfson Prize for History and the British Academy Prize. His most recent work A History of Christianity (2010) was awarded the Hessel-Tiltman Prize.