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 and graduate teaching on the processes of integration and fragmentation within Europe. In the most recent national Research Excellence Framework (REF 2014) the Institute was ranked first for research in its sector. The School of Public Policy (@LSEPublicPolicy) equips you with the skills and ideas to transform people and societies. We are an international community where ideas and practice meet. Our approach creates professionals with the ability to analyse, understand and resolve the challenges of contemporary governance.