Stephen Tierney is Professor of Constitutional Theory in the School of Law, University of Edinburgh, UK and Visiting Professor and Distinguished Research Fellow at Notre Dame Law School, USA. He is a Fellow of the Royal Society of Edinburgh and has held Senior Research Fellowships with both the British Academy and the ESRC. He serves as Legal Adviser to the House of Lords Constitution Committee and is a member of the Executive Committee of the UK Constitutional Law Association. He has published ten books, including two monographs with Oxford University Press: Constitutional Law and National Pluralism (2004) and Constitutional Referendums: The Theory and Practice of Republican Deliberation (2012).