United Kingdom · Question · Written question
UIN 94531
Comprehensive Test Ban Treaty
Introduced
25 November 2025
Last action
3 December 2025 · Answer
Status
Answered
Sponsors
—
Subjects
Discovery layer
Source updated
3 December 2025
Summary
To ask the Secretary of State for Defence, if he will publish the review made of the Comprehensive Test Ban Treaty (CTBT) methodology as mentioned has been undertaken last year in the Defence Nuclear Enterprise 2025 annual report.
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Timeline
25 November 2025
Written question
To ask the Secretary of State for Defence, if he will publish the review made of the Comprehensive Test Ban Treaty (CTBT) methodology as mentioned has been undertaken last year in the Defence Nuclear Enterprise 2025 annual report.
Source: Commons
3 December 2025
Answer
The United Kingdom has no plans to publish its Comprehensive Test Ban Treaty (CTBT) methodology. The methodology revalidated our approach to warhead design and certification which is, and will remain, in compliance with the CTBT. We ratified the CTBT in 1...
Source: Written answer
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- · Ministry of Defence · Answering body
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Sources
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- Official source: https://questions-statements.parliament.uk/written-questions/detail/2025-11-25/94531
- Open data entity: https://questions-statements-api.parliament.uk/api/writtenquestions/questions/1857093
- uk · wq-1857093 · source updated 3 December 2025