The Royal Commission on the Constitution, also referred to as the Kilbrandon Commission (initially the Crowther Commission) or Kilbrandon Report, was a long-running royal commission set up by Harold Wilson's Labour government to examine the structures of the constitution of the United Kingdom and the British Islands and the government of its constituent countries, and to consider whether any changes should be made to those structures. It was started under Lord Crowther on 15 April 1969, Lord Kilbrandon took over in 1972, and it finally reported on 31 October 1973.