Judge of the Court of Appeal of England and Wales, where he sits in both the Civil and Criminal Divisions. He is also President of the UK’s Investigatory Powers Tribunal, which deals with surveillance and national security issues.

He was a lecturer in law at the University of Nottingham from 1986 to 1988.

He practised as a barrister from 1989 and became a Queen’s Counsel in 2002, appearing in many cases in the appellate courts of the UK, the European Court of Human Rights and the Court of Justice of the European Union. 

He was appointed a Justice of the High Court in October 2011; a Lord Justice of Appeal in October 2017 and President of the Investigatory Powers Tribunal in September 2018.

His publications include The Future of Human Rights in the UK (1997, published on the eve of the Human Rights Act 1998) and The Unity of Law (a collection of lectures and essays) published in 2022.

He retains links to academia. In the past he has been a Visiting Professor at the LSE and a Visiting Fellow of Lady Margaret Hall, Oxford, and is currently an Honorary Professor at the University of Nottingham.