VerbatimParliament, as it happens

Plutonium

Asked by Helen MaguireLiberal DemocratDepartment for Energy Security and Net ZeroTabled Answered 17 November 2025UIN 88152

The question

To ask the Secretary of State for Energy Security and Net Zero, what quantity of plutonium was added to the civil plutonium stockpile in the last year.

Answered by Michael Shanks

The UK is no longer adding to the inventory of separated civil plutonium through reprocessing spent fuel. The Thermal Oxide Reprocessing Plant (THORP) at Sellafield is now closed, having ceased reprocessing operations in November 2018 and the Magnox reprocessing facility ceased reprocessing operations in 2022.

Verbatim has judged this answer against the question that was actually asked — answered, partly answered, or evaded. Sign in to see the verdict →

Open this question in Verbatim →

Every written question, searchable

155,000 questions tabled since the election, with the answer each department gave — and the ones still unanswered, with the clock running. Free to search.

Search written questions →Read on Verbatim