When Philip Larkin went up to St John’s College, Oxford, in the early 1940s, he found himself in a world of deprivation and departures. The arrival of war had ruined any hope he might have had of living the sybaritic student life mythologised by Evelyn Waugh; the majority of the younger dons had departed to serve in the forces or the ministries; the few undergraduates at the college who hadn’t already followed suit could expect to be called up soon.