- Quondam Fellow, All Souls College (from 2006)
- Post-Doctoral Research Fellow, All Souls College (from 2003 to 2006)
- Lecturer in Early Modern History, Merton College, Oxford (from 2002 to 2003)
- Postgraduate, Balliol College, Oxford (from 1999 to 2002)
- Postgraduate, Glasgow University (from 1994 to 1999)
- Social, religious and cultural history of Europe in the later middle ages, from about 1200 to the reformation
- The Detection of Heresy in Late Medieval England (New York: OUP, 2005)
- Anti-Lollard Polemic and Practice in the Fifteenth-Century (2003)
- Medieval history of Britain and Europe, 1066-1550, as well as Approaches to History, Disciplines of History, and Theories of the State
- Use of English and the public sphere in the late Middle Ages