Policing cannabis as a Class C drug : An arresting change? / Joseph Rowntree Foundation, 21 January 2007
PDF - http://www.jrf.org.uk/bookshop/eBooks/1961-policing-cannabis-classc.pdf
A review of the impact of reclassification on the policing of cannabis possession.
Tiggey May, Martin Duffy, Hamish Warburton and Mike Hough