On Friday 24 February 2017, The Honourable Mr Justice Singh delivered the 2017 Sir David Williams Lecture entitled "Divided by a common language: British and American perspectives on Constitutional Law". The Sir David Williams Lecture is an annual address delivered by a guest lecturer in honour of Sir David Williams, Emeritus Rouse Ball Professor of English Law and Emeritus Vice-Chancellor of Cambridge University. More information about this lecture, including photographs from the event, is available from the Centre for Public Law website at: http://www.cpl.law.cam.ac.uk/sir-david-williams-lectures This entry provides an audio source for iTunes U.