Question to the Home Office:
To ask the Secretary of State for the Home Department what estimate she has made of the (a) volume and (b) proportion of illegal drugs that are seized before they reach consumers.
A total volume seized across all drugs is not available as they are measured in different units, such as kilograms, doses and plants. However data relating to seizures of cocaine, heroin and ecstasy for 2016/17 can be found at:
Data is not collected on the proportion of drugs that are seized.