On Friday 28 November 2025, The Professor Trevor Allan FBA delivered the 202 Sir David Williams Lecture entitled "Neither Parliamentary Sovereignty nor Judicial Supremacy: The Rule of Law as the Rule of Common Right and Reason".

The lecture begins at: 07:27

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:

https://www.cpl.law.cam.ac.uk/sir-david-williams-lectures