The UK's "outdated" drug laws could be doing more harm than good and are failing to recognise that banning some "legal highs" may have negative consequences for public health, according to the leading independent panel set up to analyse drugs policy. On the eve of the 40th anniversary of the Misuse of Drugs Act, the UK Drug Policy Commission warns that the exponential rise in "legal highs" and the availability of substances over the internet is making current laws redundant.