As one of the two principal common law courts with the King's Bench, the Common Pleas fought to maintain its jurisdiction and caseload, in a way that during the 16th and 17th centuries was categorised as conservative and reactionary. Reaching an acceptable medium with the King's Bench and Exchequer of Pleas proved to be the downfall of all three courts; with several courts of near-identical jurisdiction, there was little need for separate bodies, and the superior courts of Westminster were merged by the Supreme Court of Judicature Act 1873 into a single High Court of Justice. With an Order in Council issued on 16 December 1880, the Common Pleas Division of the High Court ceased to exist, marking the end of the Court of Common Pleas.