At which English university did C.S. Lewis spend most of his academic career?

C.S. Lewis spent most of his academic career at Oxford University. He studied at University College, Oxford, became a fellow and tutor at Magdalen College, and remained connected with Oxford for decades.

Lewis went to Oxford after serving in the First World War. He achieved an unusually strong academic record, taking examinations in classics, philosophy, and English. In 1925 he was elected a fellow of Magdalen College, where he taught for many years and developed friendships with other scholars and writers.

In 1954 Lewis left Oxford for Cambridge University, becoming the first holder of the Medieval and Renaissance English chair there. That later appointment sometimes causes confusion about his main university affiliation. Cambridge was important in his final academic decade, but Oxford was the institution where he spent the majority of his scholarly career and where he wrote many of his best-known works.