Enforce compulsory drug tests for all Members of parliament, and where necessary prosecute under the misuse of substances act.
Why is this important?
"Chancellor of the Exchequer George Osborne's appearance and bizarre behaviour during Prime Minister's Questions on the 26th of November 2014 begs the question of whether or not he was or had recently been under the influence of drugs. The government's exponentially failing drug policy puts public health at risk and defies the advice of their own researchers, whilst lining the pockets of dubious pharmaceutical companies and criminal gangs dealing on the black market. It is also in the public interest to know whether MPs are dabbling in legal highs, in a bid to escape failing a conventional drug test."