Katy Gallagher. How Dare You!, page-326

CASE LAW Pervert Justice.
R VS ROGERSON [1992} HCA 25 Brennan and Toohey JJ stated that:

"The course of justice is perverted (or obstructed) by impairing (or preventing the exercise of) the capacity of a court or competent judicial authority to do justice. The ways in which a court or competent judicial authority may be impaired in (or prevented from exercising) its capacity to do justice are various. Those ways comprehend, in our opinion, erosion of the integrity of the court or competent judicial authority, hindering of access to it, deflecting applications that would be made to it, denying it knowledge of the relevant law or of the true circumstances of the case, and impeding the free exercise of its jurisdiction and powers including the powers of executing its decisions. An act which has a tendency to effect any such impairment is the actus reus of an attempt to pervert the course of justice. An act which effects any such impairment is the actus reus of a perversion of the course of justice"