 He is also the President of the national Appellate Tribunal, the highest ecclesiastical court of appeals in the Anglican Church of Australia.Mason was appointed a Companion of the Order of Australia in 2003 for service to the law and legal scholarship, to the judicial system in New South Wales, to the Anglican Church, and to the community.Mason was appointed a Companion of the Order of Australia (AC) in 2003 for "service to the law and legal scholarship, to the judicial system in New South Wales, to the Anglican Church, and to the community".