A distinguished though uncombative member in the council, Clayton eventually succeeded as the
Leader of the New South Wales Opposition in the Legislative Council, in 1960. His most significant achievement was found in attacking the
Labor Government's attempts to abolish the Legislative Council, leading the campaign through the Supreme Court and the High Court of Australia and the
subsequent referendum in April 1961, which overwhelmingly rejected the abolition proposal and marked the decline of the Labor government that had been in power since 1941. He stood down as leader in 1962, after problems with the leadership of the
Liberal Party. He continued serving on the council until his retirement aged 88 in 1973. Survived by his two sons and a daughter, he died aged 90 on 18 July 1975 at Paddington and was cremated. ==References==