A guilty plea entered after a judicial sentencing indication, where the accused was fully informed of the significance of the plea and made a deliberate choice after weighing personal consequences (including fear of custodial sentence's impact on dependent children), is a voluntary act and does not constitute a miscarriage of justice. Fresh evidence of police misconduct from a Royal Commission does not justify setting aside a conviction entered on a guilty plea where the evidence was either already available or did not directly support the specific allegation underlying the defence.
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