- Medieval social and economic history (particularly medieval English towns, markets and trade)
- Early-Reformation heretical book trade
‘Baking for the common good: a reassessment of the assize of bread in medieval England’, Economic History Review, 2nd series, 57, 3 (August, 2004), pp. 465-502.
‘“Men as march with fote packes”: pedlars and freedom of mobility in late-medieval England’, in P. Holden (ed.), Freedom of Movement in the Middle Ages: Proceedings of the Twentieth Harlaxton Symposium (Donington, 2007), pp. 137-56.
‘The Christian Brethren and the dissemination of heretical books’, in R. Swanson (ed.), Studies in Church History: The Church and the Book (Proceedings of the Ecclesiastical History Society Conference 2000, Boydell & Brewer Ltd, Woodbridge), pp. 190-200.
- ‘The Black Death’ (level one)
- ‘The Age of Chivalry’ (level one)
- ‘The Expansion of Medieval Europe, 1000-1300’ (level two)
- ‘The Peasants’ Revolt, 1381’ (level three)