DrugScope, a charity, reckons that many of its clients take drugs as "self-medication" for social and psychological problems.

慈善机构英国药品协会认为，它的大多数病人都把吃药当成了解决他们社会和心理问题的自我治疗。

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Martin Barnes, chief executive of the charity DrugScope, said reclassifying crystal meth was a "sensible precautionary measure".

BBC: NEWS | UK | UK Politics | Crystal meth to be class A drug

The 2011 Street Drug Trends Survey by DrugScope, a drugs-information charity, which was released on November 16th, provides some details.

ECONOMIST: Drug use and abuse

Giving evidence are Crisis, Drugscope, Mind, and the Single Parent Action Network.

BBC: Week ahead in committees