R v Marien

The Director of Public Prosecutions appealed against the sentence imposed on the respondent, R v Marien, who had pleaded guilty to persistent sexual exploitation of a child. The sentencing judge had imposed a sentence of five years' imprisonment with a non-parole period of three years and four months. The Director contended that this sentence was manifestly inadequate and failed to uphold appropriate standards of punishment for such offences. The appeal was heard by Gray, Sulan, and Blue JJ.

The central legal issue before the appellate court was whether the sentence imposed was so manifestly inadequate as to warrant intervention by the Court of Criminal Appeal, particularly in light of established sentencing guidelines for persistent sexual exploitation of children under 12 years of age. The Court was required to consider the principles governing prosecution appeals against sentence, including the high threshold for granting leave to appeal and the circumstances in which an appellate court should interfere with a sentence, such as when it is demonstrably too low, shocks the public conscience, or fails to establish or maintain adequate sentencing standards.

The Court applied the well-established principles for prosecution appeals against sentence, noting that leave to appeal is typically granted only in rare and exceptional cases to avoid infringing the principle of double jeopardy. However, the Court also affirmed that intervention is justified to correct sentences that are manifestly inadequate, idiosyncratic, or so disproportionate to the seriousness of the crime as to shock the public conscience or shake public confidence in the administration of justice. The Court considered the sentencing guideline case of R v D, which suggested a starting point of 12 years' imprisonment for persistent sexual activity against a child under 12 by a person in a position of authority. Applying these principles and considering the gravity of the offending, which involved repeated sexual interference with a child aged 9 and 10, the Court found the original sentence to be manifestly inadequate.

Consequently, the Court allowed the appeal, set aside the original sentence, and resentenced the respondent to ten years' imprisonment with a non-parole period of five years, commencing from the date of his custody.