Government policy failing to stop use as prices fall.  
The UK has 327,466 hardcore "problem drug users" who are regularly using either heroin, crack or cocaine, research revealed yesterday. The figure is far higher than a previous estimate of 270,000.  
Britons are also spending a total of £5.9bn a year on illegal drugs, about two-fifths of the amount spent on alcohol and a third of the size of the legal tobacco market, according to Home Office estimates.