Question to the Home Office:

To ask the Secretary of State for the Home Department, what quantity by weight of (a) cannabis, (b) heroin, (c) morphine, (d) cocaine (including crack), (e) benzodiazepines, (f) synthetic cannabinoids, (g) amphetamines, (h) MDMA, (i) LSD, (j) magic mushrooms and (k) anabolic steroids were seized by (i) the police, (ii) Border Force, (iii) prison services, (iv) armed forces and (v) other government agencies in (A) UK territory, (B) UK territorial waters, (C) international waters and (D) overseas territories in each year between 1971 and 2020.

The Home Office collects and publishes data on the quantity of class A, class B and class C drugs seized in England and Wales by the police, including the British Transport Police, and Border Force. This data is published annually. The quantities of drugs seized are summarised in terms of kilograms, doses (in thousands) or plants, depending on the drug type.

Official statistics on seizures of drugs in England and Wales between 2000 and 2020 are available here:

https://www.gov.uk/government/collections/seizures-of-drugs-in-england-and-wales.

Statistics on seizures of drugs in England and Wales between 1978 and 2000 can be found on the National Archive Research Development and Statistics website: https://webarchive.nationalarchives.gov.uk/

Data for earlier years is not available. Information on drugs seized by the prison services, armed forces and other government agencies, and data on seizures made outside England and Wales is not held by the Home Office.