Maddison called to the bar at Inner Temple in 1970 and elected as a Bencher in 2005. He was appointed an Assistant Recorder in 1986, a Recorder in 1990, and a Circuit Judge in 1992. He served as a Member of the Parole Board from 1996 to 2002. In 2003, he was appointed a Senior Circuit Judge in 2003, Honorary Recorder of Manchester from 2003 to 2008, and Resident Judge for Manchester Crown Court. Maddison served in those roles until his appointment as a Justice of the High Court on 29 January 2008. He was assigned to the Queen’s Bench Division and received the customary knighthood. During his time on the High Court, he served as Judicial Member to the Crown Court Rule Committee in 2009 and Director of Criminal Training for the Judicial Studies Board in 2010. On 22 May 2013, Maddison retired from the bench, but continues to sit on an ad hoc basis.
- "High Court – Retirement of The Honourable Sir David George Maddison" (Press release). Ministry of Justice. 22 May 2013. Archived from the original on 5 June 2013. Retrieved 26 July 2013.
- "No. 58601". The London Gazette. 4 February 2008. p. 1607.
- R v Evans  EWCA Crim 452
|This United Kingdom law-related biographical article is a stub. You can help Wikipedia by expanding it.|