(1258), in English history, a plan of reform accepted by Henry III, in return for the promise of financial aid from his barons. It can be regarded as England's first written constitution.

Henry, bankrupted by a foolish venture in Sicily, summoned Parliament in the spring of 1258 (the Easter Parliament, or the so-called Mad Parliament). In return for a badly needed grant of revenue, Henry grudgingly agreed to abide by a program of reform to be formulated by a 24-man royal commission, half of whom were to be chosen by the king, half by the baronial party. The report of the commission (issued c. June 10) is known as the Provisions of Oxford.

The Provisions, confirmed by an oath of “community” of the magnates, were to remain in effect for 12 years and provide the machinery through which the necessary reforms could be accomplished. The government was placed under the joint direction of the king and a 15-member baronial council that was to advise the king on all important matters. All high officers of the realm were to swear allegiance to the king and the council. Parliament was to meet three times a year to consult on further reforms. A justiciar was appointed (for the first time since 1234) to oversee local administration, and the majority of sheriffs were replaced by knights holding land in the shires that they administered.

Annulled by papal bulls in 1261 and 1262 and by Louis IX of France in the Mise of Amiens (January 1264), the Provisions were restored by baronial action in 1263 and, in modified form, in 1264 but finally annulled by the Dictum of Kenilworth (October 1266).