"The male mortality rate from drug misuse dropped significantly from it’s peak of 55.8 deaths per million population in 2009 to 43.4 deaths per million population in 2011 – the lowest rate since 2003.
"Despite some annual fluctuations, the female mortality rate from drug misuse has tended to increase since 1993. The mortality rate peaked in 2008 at 15.6 deaths per million population, then dropped significantly in 2009, but increased slightly in 2010 and 2011, reaching 14.4 deaths per million population."

Source

"Statistical Bulletin: Deaths Related to Drug Poisoning in England and Wales, 2011" (London, England: Office for National Statistics, Aug 29, 2012), p. 7.
http://www.ons.gov.uk/ons/dcp…