At Keble , he also worked as dean and then as senior tutor .
In 1984 , he joined the University of Oxford where he had been appointed a lecturer in physical geography and elected a Fellow of Keble College , Oxford .
At Keble College , he also worked as dean and then as senior tutor .
In 1984 , he joined the University of Oxford where he had been appointed a lecturer in physical geography and elected a Fellow of Keble College , Oxford .