In sentencing for supply of large commercial quantity of heroin, the role of the offender and level of participation in the offence are more important than the mere quantity of drug. A principal of a drug supply enterprise who does not use drugs and operates purely for profit is in the worst category of drug offenders. Significant disparity between sentences of a principal and subordinate co-offenders does not engage the parity principle where the moral culpability is of a different character and far more grave.
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