Question

To ask Her Majesty’s Government what is the size of the present stockpile of plutonium held in the United Kingdom.

Data on the amount of civil plutonium in the UK are published each year by the Office for Nuclear Regulation. As of 31 December 2014 there was 126.3 tonnes. Detailed information can be found at http://www.onr.org.uk/safeguards/civilplut14.htm.

Data on the amount of civilian plutonium as of 31 December 2015 will be published in the spring 2016.