The size and jurisdiction of English royal government underwent sustained development in the thirteenth century, an understanding of which is crucial to a balanced view of medieval English society. The papers here follow three central themes: the development of central government, law and justice, and the crown and the localities. Examined within this framework are bureaucracy and enrolment under John and his contemporaries; the Royal Chancery; the adaptation of the Exchequer in response to the rapidly changing demands of the crown; the introduction of a licensing system for mortmain alienations; the administration of local justice; women as sheriffs; and a Nottinghamshire study examining the tensions between the role of the king as manorial lord and as monarch. Contributors: NICK BARRATT, PAUL R. BRAND, DAVID CARPENTER, DAVID CROOK, ANTHONY MUSSON, NICHOLAS C. VINCENT, LOUISE WILKINSON. ADRIAN JOBSON is at the National Archives, Kew.