Written Question·Department for Energy Security and Net Zero·UIN 88153
Plutonium
Tabled: 4 November 2025
Answered: 17 November 2025
Question
Helen Maguire
Liberal Democrat — Epsom and Ewell
To ask the Secretary of State for Energy Security and Net Zero, what the current volume is of the civil plutonium stockpile in tonnes.
Answer
Michael ShanksAs of 31 December 2023, the total holding of separated civil plutonium in the UK was 140.9 tonnes. The Office for Nuclear Regulation publishes annual figures on the UK's separated plutonium inventory. The most recently published data can be found at the f...
ⓘ
This is an extract from the Parliament API. Search the full answer on Parliament.uk (UIN 88153) →