When sentencing for historical sexual offences from the 1970s and 1980s, the non-parole period should reflect the then-prevailing practice of one-third to one-half of the head sentence. However, an appellate court will not intervene to reduce the non-parole period where other errors in the sentencing process (such as failure to apply cumulation principles) have already significantly favoured the applicant, such that no other sentence is warranted in law under s 6(3) of the Criminal Appeal Act 1912.
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