Contributor(s): Professor Vernon Bogdanor, Dr Catherine Haddon | Vernon Bogdanor discusses his forthcoming publication on the Constitution’s role within the future relationship between the UK and Europe. Vernon Bogdanor is Research Professor in the Centre for British Politics and Government at King’s College London. Catherine Haddon (@cath_haddon) is a Senior Fellow at the Institute for Government, which she joined in 2008 after a career in academia. She has led the Institute’s work on Whitehall reform, managing changes of government and general elections, evidence and policy making and now also runs their professional development and ministers programme. She advises and gives evidence to parliamentary select committees, has featured on radio and at party conferences, and is regularly cited in the press. Tony Travers is Associate Dean of the School of Public Policy and Professor in Practice in the Department of Government. The LSE European Institute (@LSEEI) is a centre for research an