Roberts-Smith has been an accredited Australian Advocacy Institute teacher since 1992 and was a member of the Legal Practice Board of WA between 1989 and 2000. Between 1992 and 2000, he was deputy chairman of the Legal Practitioners Complaints Committee. From 1999 to 2000, he was chair of the Murdoch University Board of Discipline, before resigning upon his appointment to the Bench. In 2002, prior to his appointment to the Bench, he conducted a Ministerial Review into the Western Australia Witness Protection Program and the death of a protected witness.