Career

Lewison was called to the Bar (Lincoln’s Inn) in 1975 and has been a Bencher since 2003. He became a Queen's Counsel

Queen's Counsel

Queen's Counsel , known as King's Counsel during the reign of a male sovereign, are lawyers appointed by letters patent to be one of Her [or His] Majesty's Counsel learned in the law...

 in 1991. He was appointed an Assistant Recorder in 1994 and a Recorder in 1997. In 2000, he was appointed a Deputy High Court Judge. He was appointed to the High Court of Justice

High Court of Justice

The High Court of Justice is, together with the Court of Appeal and the Crown Court, one of the Senior Courts of England and Wales...

 on 29 April 2003 and assigned to the Chancery Division; he was knighted

Knight Bachelor

The rank of Knight Bachelor is a part of the British honours system. It is the most basic rank of a man who has been knighted by the monarch but not as a member of one of the organised Orders of Chivalry...

 the same year. The following year, he was appointed to the Competition Appeal Tribunal

Competition Appeal Tribunal

The Competition Appeal Tribunal of the United Kingdom was created by Section 12 and Schedule 2 to the Enterprise Act 2002 which came into force on 1 April 2003.-Functions:The current functions of the CAT are:...

. Lewison has served as Chancery Supervising Judge from 2007 to 2009. In 2011, he was appointed a Lord Justice of Appeal

Lord Justice of Appeal

A Lord Justice of Appeal is an ordinary judge of the Court of Appeal of England and Wales, the court that hears appeals from the High Court of Justice, and represents the second highest level of judge in the courts of England and Wales-Appointment:...

 effective 4 October 2011 and it was announced he would receive the customary appointment to the Privy Council

Privy Council of the United Kingdom

Her Majesty's Most Honourable Privy Council, usually known simply as the Privy Council, is a formal body of advisers to the Sovereign in the United Kingdom...

.