 When MP he was in 1974 Parliamentary Secretary to Rt Hon Roy Jenkins, the Home Secretary, and was also a member of the Council of Europe.Throughout his time in Parliament he campaigned for more devolution for Wales, an issue that split the Welsh Labour Party deeply.In June 1974, in a letter to the Executive of the Carmarthen Constituency Labour Party, he warned of the dangers of the ever leftward drift of the party saying – "I cannot any longer conceal my acute concern about some developments in the Labour Party which will in my view not enhance the prospects of the Labour Party and will also affect the longer term unity of the Labour Movement.