The Mail on Sunday’s Simon Walters has another non-story tomorrow about David Cameron and his drugs past.  He rehashes an old story about an alleged attempt – during the 2005 Tory leadership contest – by rival camps to probe the extent of Mr Cameron’s use of drugs.  I understand that what the MoS prints is partial and exaggerated.  My guess is that all of these stories about Cameron and cannabis during his early life are an attempt to inch towards a bigger story about Cameron and harder drugs in his later life but the newspapers have no evidence to support these attempts – despite huge efforts by Fleet Street’s ‘finest’ raincoated investigators.  A Populus poll, taken last week, found that 81% were not concerned by drug use at school or university.  64%, however, thought that use of "more serious" drugs would matter and 71% thought drug use during working life was of concern.