The Mildrith Legend: A Study in Early Medieval Hagiography in England (1982)
ed. with G. Bonner and C. Stancliffe St Cuthbert, his Cult and his Community to AD 1200 (1989)
Saints and Relics in Anglo-Saxon England (1989)
with D. Gore & G. Fellows-Jensen, Sources for York History to AD 1100 (York, 1998)
ed. & tr. Symeon of Durham. Libellus de exordio atque procursu istius, hoc est Dunhelmensis, ecclesie (Oxford, 2000)
Bede and Germany (Jarrow Lecture, 2002)
Northumbria 500-1100: Creation and Destruction of a Kingdom (Cambridge: Cambridge University Press, 2003)
ISBN0-521-04102-3.
ed. with many others, The Durham Liber Vitae. British Library, MS Domitian A.VII, An Edition with Digital Facsimile, and Prosopographical and Linguistic Commentaries (British Library, 2007)
Early Medieval Europe 300–1050: A Guide for Studying and Teaching, 2nd edn (Abingdon: Routledge, 2018)