The provision of information to police about serious criminal activity, without making a statement or offering to give evidence, may warrant a 10% reduction in sentence where the information was of some substance, was validated by independent sources, and exposed the informant to risk of harm. New evidence of assistance to authorities not raised at sentencing may be received on appeal to avoid a miscarriage of justice even where the delay is considerable and not well-explained, provided there was no tactical advantage in withholding the evidence.
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