Career
He was a lecturer and senior lecturer at the University College of Swansea, from 1958 to 1966 and held an American Council of Learned Societies Fellowship at Columbia University, New York in 1962 - 3, also teaching there in 1965. He was a Fellow of Queen"s College, Oxford, from 1966 to 1989 and served as Vice-Chancellor of the University of Wales from 1989 to 1995. In this capacity, he served as a Welsh Supernumerary Fellow of Jesus College, Oxford from 1991 to 1992.
In 1983 he was elected Fellow of the British Academy and in 1992 he was made an Honorary Fellow of the Queen"s College, Oxford, and in 2002 of Oriel College, Oxford.
He was principal of the University of Wales, Aberystwyth in the 1990s. He is also a Founding Fellow of the Learned Society of Wales.
He has served on the Lords Select Committee on the Constitution. They have four grandchildren.