Offa, King of the Mercians
Major biography of King Offa of Mercia (757–796), builder of Offa's Dyke and architect of Mercian supremacy, examining royal governance, coinage, and cross-Channel diplomacy.
Making Money in the Early Middle Ages
A comprehensive re-evaluation of early medieval currency and society across northern Europe and the Mediterranean from the end of Rome to the central Middle Ages (c. 450–1100).
Early Medieval Britain, c. 500–1000
Cambridge History of Britain series. An expansive, multi-disciplinary synthesis integrating history, archaeology, place-names, and literature across Anglo-Saxon, Celtic, and Scandinavian Britain.
Citadel of the Saxons: The Rise of Early London
The transformative evolution of London from the abandonment of Londinium, through Lundenwic on the Strand, to Alfred's fortified re-foundation of the City in 886.
Medieval European Coinage, vol. 8: Britain and Ireland c. 400–1066
With a Catalogue of the Coins in the Fitzwilliam Museum, Cambridge. The definitive reference corpus and handbook for early British and Irish monetary history.
The Forum Hoard of Anglo-Saxon Coins / Il ripostiglio dell’Atrium Vestae nel Foro Romano
Co-authored with F. Tinti. Bollettino di numismatica 55–6. Publication and metallurgical analysis of the 9th-century hoard of English coins buried at the House of the Vestals in Rome.
Sylloge of Coins of the British Isles, vol. 67. British Museum: Anglo-Saxon Coins II
Southern English Coinage from Offa to Alfred, c. 760–c. 880. Detailed cataloguing and numismatic analysis of the national collection of southern Anglo-Saxon silver pennies.
Money and Power in Anglo-Saxon England: The Southern English Kingdoms 757–865
Cambridge Studies in Medieval Life and Thought, 4th series, vol. 80. Groundbreaking study of how coinage, taxation, royal diplomacy, and lordship intersected in Mercia, Wessex, and Kent.
The Coinage of Southern England 796–865 (2 vols.)
BNS Special Publication 8. Exhaustive corpus, die-study, and monetary history of southern English mints during the Viking invasions and rise of Wessex.