Professor Jim Allan is the Garrick Professor of Law at the TC Beirne School of Law, University of Queensland and previously belonged to the University of Otago Faculty of Law for 11 years. In this talk Professor Allan discusses four key points, what an unwritten constitution amounts to, the point of written constitutionalism and what you are being promised when offered a written constitution. Finally he explains why a written constitution has limited choice and the process of making a decision between a written and unwritten constitution. 15 July 2015