Psychoactive Substances Bill [Lords]

Will my hon. Friend challenge the popular myth that, by banning a drug, we reduce its use? That has virtually never happened, and almost every time a previously legal substance is banned, its use increases. That happened with mephedrone and its use increased 300%. It is a complete myth to say that banning a drug will have such effect. What it is likely to do is replace a legal market with a criminal market, which is infinitely more harmful.