Plot: Fiona Bruce presents an hour of topical debate from Epsom. On the panel: Rory Stewart MP, secretary of state for international development and Tory leadership candidate; Barry Gardiner MP, shadow international trade secretary, Labour; Jo Swinson MP, deputy leader of the Liberal Democrats; Alex Phillips MEP, Brexit Party; and Steven Pinker, cognitive psychologist, linguist and author of books on language, the mind and human nature