Cannabis use down since legal change - The Guardian 26th October 2007

Gordon Brown's plans to tighten the law on cannabis by increasing the penalties for possession suffered a fresh blow yesterday as the latest official figures showed the decision to downgrade the drug had been followed by a significant fall in its use. British Crime Survey statistics showed that the proportion of 16- to 24-year-olds using cannabis slumped from 28% a decade ago to 21% now, with its declining popularity accelerating after the decision to downgrade the drug to class C was announced in January 2004.

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Cocaine use 'rising among under-24s' - The Telegraph 26th October 2007