Dr Rory Naismith is Lecturer in Early Medieval British History at King's College London and formerly a Fellow of Clare College, Cambridge. He has published extensively on the history of early medieval Britain and Europe, particularly from an economic and monetary perspective. Previous books include The Coinage of Southern England, 796 865 (2011) and Money and Power in Anglo-Saxon England: The Southern English Kingdoms 757 865 (Cambridge, 2012), winner of the International Society of Anglo-Saxonists Best First Book Prize 2013.