Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what steps his Department is taking to increase domestic inventories of plutonium.

There are no plans to increase the quantity of plutonium in the UK. The domestic inventory of plutonium has arisen from historic reprocessing of spent fuel from the UK and overseas energy utilities under commercial agreements. Reprocessing stopped in the UK in 2022.