Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, how much plutonium was imported annually since 2010, by country of origin.

We do not import civil separated plutonium to the UK. Historically, spent fuel has been imported from other countries for reprocessing, however the imports took place prior to 2010, and reprocessing stopped in the United Kingdom in 2022.

ONR publishes annual figures on the UK's separated plutonium inventory, including material held in the UK on behalf of overseas customers. The most recently published data can be found at the following link: https://www.onr.org.uk/publications/regulatory-reports/safeguards/annual-civil-plutonium-figures/2023-annual-figures-for-holdings-of-civil-unirradiated-plutonium/.