* The Life and Times of King Richard III (1992)
* The Wars of the Roses: A Comprehensive Account of the Wars of York and Lancaster (1997)
* Richard III and His Rivals: Magnates and Their Motives in the Wars of the Roses (1993)
* The Reign of Henry III: A Survey (1988)
* Medieval Records of a London City Church (1978)
Articles
* "The Rise of Richard, Duke of York" in *The Wars of the Roses* edited by Andrew Boardman (1994)
* "The Kingmaker and His Faction in the Wars of the Roses" in *The Kingmaker and His Heirs: The History of the Earls of Warwick in the Fifteenth Century* (2009)
* "The English Navy and the Wars of the Roses, 1450–1460" in *The Navy in the Wars of the Roses* (1992)
* "The Battle of Edgcote, 1469: A Re-Assessment" in *Richard, Duke of York, and His World: A Collection of Papers from the Eighth Medieval Conference Held in the University of York, July 1988* (1990)
* "The Murder of Henry VI, 21 May 1471: A New Investigation" in *Richard III and His Realm: Essays in Honour of Rosemary Horrox* (2002)