Boris Johnson, Michael Gove, David Cameron, George Osborne, Theresa May, Dominic Cummings, Daniel Hannan, Jacob Rees-Mogg: Oxford has produced most of the prominent Conservative politicians of our time. The university newspapers of thirty years ago are full of recognisable names in news stories, photos of social events, and Bullingdon Club reports. Many walked straight out of the world of student debates onto the national stage. Unfortunately, they brought their university politics with them. Eleven of the fifteen postwar British prime ministers went to Oxford. This narrowest of talent pools has shaped the modern country. In Chums, Simon Kuper traces how the rarefied and privileged atmosphere of Oxford University - and the friendships and worldviews it created - helped give us today's Britain, including Brexit.