 Alcohol should come fifth behind cocaine, heroin, barbiturates and methadone, and tobacco should rank ninth, ahead of cannabis, LSD and ecstasy, he said.He also argued that smoking cannabis created only a "relatively small risk" of psychotic illness.Explaining his sacking of Nutt, Alan Johnson wrote in a letter to "The Guardian", that "He was asked to go because he cannot be both a government advisor and a campaigner against government policy.