Plot: Fiona Bruce presents an hour of topical debate with questions from West London and live social media reaction. On the panel: Robert Jenrick MP, secretary of state for Housing, Communities and Local Government, Conservative; Emily Thornberry MP, shadow foreign secretary, Labour; Richard Horton, editor-in-chief of the medical journal The Lancet; and Humphrey Cobbold, chief executive officer of PureGym, the UK's leading gym provider