Mark is a Sydney barrister practising in administrative law and general law at Maurice Byers Chambers. He is author of New South Wales Administrative Law, a two volume looseleaf service, published by Thomson Reuters which covers the Administrative Decisions Tribunal, Supreme Court judicial review, freedom of information and privacy.
He is the Title Editor of the two Administrative Law volumes of Laws of Australia, also published by Thomson Reuters.
For seven years he was a part-time Judicial Member of the Administrative Decisions Tribunal of New South Wales in the General Division - hearing matters concerning privacy and freedom of information.
For sixteen years, Mark was an occasional part-time lecturer in undergraduate “Administrative Law” in the Law Faculties of the University of Sydney and the University of New South Wales.
He also served on the Law Council of Australia's Administrative Law Committee for about twenty years, ending in 2010.
For 17 years, Mark was a director of Counsels Chambers Limited (providing accommodation, internet data and telephony services to about 600 barristers in Sydney).
For 2 years, Mark served as a member of the Council of Law Reporting for New South Wales (in 2012 and 2013).
Mark was junior counsel in the High Court of Australia in 1986 for the British Attorney-General in the famous Spycatcher Case, against the late spy and author, Mr Peter Wrighta.
In 2002, Mark acted for 6,700 refugee plaintiffs and won one of the largest administrative law class-actions in history in the High Court of Australia. The case concerned systemic denial of natural justice in the Refugee Review Tribunalb.
Mark has also appeared in many unlawful imprisonment, domestic slavery cases and cases on prisoner's rightsc.
He recently argued in the High Court of Australia on behalf of the Hells Angels Motorcycle Club, in a civil rights case leading the High Court to set aside as invalid State legislationd.
Prior to full-time practice at the Bar, Mark worked :
- for 5 years as a Commercial Litigation Solicitor with Mallesons Stephen Jaques in their Canberra and Sydney offices;
- for a year as the Legal Assistant to the Solicitor-General for New South Wales, Mr Keith Mason QC, later, Justice Mason, President of the NSW Court of Appeal
- for 2 years as the Senior Legal Research Officer with the Justices of the High Court of Australia in Canberra; and,
- as a Consultant and Legal Officer at the NSW Law Reform Commission (Also at Austlii, here)