That this House acknowledges the importance of Professor Dame Carol Black's informative and insightful Independent Review of Drugs; notes that her research reveals that while the cost to society of illegal drugs is estimated at £20 billion per year, only £600 million is spent on treatment and prevention; further notes that her analysis confirms that problem drug use is highly connected to poverty and that those problems blight our most deprived communities; believes that problem drug use has reached the level of a public health emergency; and calls on the Government to tackle the disinvestment highlighted by the Review by reversing the cuts to drug treatment that have exacerbated this tragic situation.