In 1965, Hayes was elected as a fellow and tutor at Keble College, Oxford, Hayes was
Junior Proctor of the University for the year 1980–1981, with responsibility for enforcing University discipline and sanctions and for the conduct of public examinations. In the 1980s, he was Tutor for Admissions at Keble. In 1991, as Senior Tutor of Keble, Hayes was involved in a dispute over
Phil Weston, a cricketer who had been expected to join the college but did not do so after being refused permission to absent himself for much of his first term on a cricket tour of
Pakistan. Hayes was accused of intransigence by
Peter Roebuck, writing in
The Times, but he made a firm reply, and others defended him. Interviewed in 2005, one of Hayes’s pupils, the Conservative politician
Philip Dunne, said that he had taken no part in student politics at Oxford but Hayes and
Larry Siedentop had influenced him by drawing international political themes to his attention. ==Personal life==