A fresh interpretation of King William III's employment of the royal veto provides new insights into the political and constitutional issues of his reign. The veto, or the crown's negative voice as it was called by contemporaries, is a particularly fruitful subject for study in charting the course of politics in seventeenth century England. The employment of the veto offers an accurate barometer for measuring political and constitutional change. It addresses the key issue of sovereignty—who makes law? King or Parliament? It is surprising, therefore, that historians have neglected to examine the implications of William's employment of the veto. As a result, their conclusions about the veto are not supported by a full analysis of the available evidence. What they have overlooked is that a close examination of the bills the king rejected, and of contemporary views of the royal prerogative, demonstrates that underneath the turmoil of Williamite politics lay a stable foundation built on the settlement achieved at the Revolution of 1688/9.

During his brief rule William III rejected a significant number of bills. Between 1692 and 1696 he vetoed five public bills: the Judges, Royal Mines, Triennial, Place, and MP Qualifications Bills. Previous Tudor and Stuart monarchs, with the exception of Queen Elizabeth I, only infrequently invoked the crown's right to refuse legislation. Queen Anne, who followed William to the throne, vetoed only one bill. She was the last monarch to employ this prerogative, although it remains theoretically a legitimate royal power.