London: The highs and the lows 2 : executive summary : A report from the Greater London Alcohol and Drug Alliance / Greater London Authority, January 2007
PDF - http://www.london.gov.uk/mayor/health/drugs_and_alcohol/docs/highs-lows2-exec-sum.pdf
Rebecca Smith et al
"This second publication in the Highs and Lows series looks at the nature and impacts of both alcohol and drug use in London. The report brings together a wide range of evidence from major national studies as well as regional and local intelligence sources. It provides a comprehensive picture of the complexities of alcohol and drugs and their effects on individuals and communities across the capital."

Full report
PDF - http://www.london.gov.uk/mayor/health/drugs_and_alcohol/docs/highs-lows2.pdf