What the Government do is listen to the independent, statutory Advisory Council on the Misuse of Drugs, which has been very clear that

“the use of cannabis is a significant public health issue. Cannabis can unquestionably cause harm to individuals and society.”

We cannot just ignore that expert advice. As I said in my statement, there is a precedent for medicines, including controlled drugs such as cannabis and Sativex, to be issued with a licence to enable trials.