Nearly the last of the events we attended at the Derbyshire Literary Festival was a discussion between Caroline Lucas, Green MP for Brighton, and Natascha Engel, Labour MP for North East Derbyshire. It was meant to be about the role of women in Westminster, about which they might have agreed, but turned into an unexpectedly fierce debate about the Referendum. Caroline Lucas, fresh from campaigning in Burton-on-Trent, was passionate and articulate about the virtues of immigration, the need to maintain open borders, and the historical importance of European collaboration. Natascha Engel, who admitted to herself being a first generation immigrant, has already voted Leave, it appeared only as a gesture of solidarity with her elderly, ex-mining constituents, who blame the hardship of their lives irrationally on immigration. She made the mistake of making a hostile comment about Poles.