sentences:  Gyles was a Judge of the Federal Court of Australia from 1999 to 2008 and then an Acting Judge of the Court of Appeal of the Supreme Court of New South Wales.He has served as an additional judge of the Supreme Court of the Australian Capital Territory, a Deputy President of the Australian Competition Tribunal, a Presidential Member of the Administrative Appeals Tribunal and an Arbitrator of the Court of Arbitration for Sport.In December 2014 Gyles was named the Independent National Security Legislation Monitor.