Question follow-through · 88153
Plutonium
To ask the Secretary of State for Energy Security and Net Zero, what the current volume is of the civil plutonium stockpile in tonnes.
About this written question
A written question asks a government minister for information in writing. Parliament publishes the question and any answer.
- Answering body
- Department for Energy Security and Net Zero
- Tabled
- 4 Nov 2025
- Target answer date
- 11 Nov 2025
- Answer
- 17 Nov 2025 · 13 calendar days after tabling
Elapsed calendar days describe the record timeline, not whether Parliament considers an answer on time.
More questions by this MP on Environment and energy
- Boiler Upgrade Scheme and Warm Homes Plan · 24 Nov 2025
- Boiler Upgrade Scheme · 24 Nov 2025
- Heat Pumps · 24 Nov 2025
- Nuclear Regulatory Review · 2 Dec 2025
- Energy Company Obligation · 8 Dec 2025
Shared topic keywords suggest a connection; they do not establish a follow-up.
Votes on this topic
- Taxation (Energy and Vehicles) Bill Committee: New Clause 5 · 1 Jul 2026
- Taxation (Energy and Vehicles) Bill Committee: New Clause 4 · 1 Jul 2026
- Taxation (Energy and Vehicles) Bill Committee: New Clause 2 · 1 Jul 2026
These Commons divisions share a topic label. The question did not necessarily lead to a vote.
Recorded timeline
4 Nov 2025
Question tabled
To ask the Secretary of State for Energy Security and Net Zero, what the current volume is of the civil plutonium stockpile in tonnes.
11 Nov 2025
Target answer date
Date supplied by the official written-questions record.
17 Nov 2025
Answer published
As 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...
Official data retrieved 28 Sept 2026.
Later records
Possible follow-up questions
Strong links require the same MP, department and exact heading. Other same-department questions are shown as unreviewed candidates, not as confirmed follow-ups. No debate link is asserted unless a stable source relationship exists.
Boiler Upgrade Scheme and Warm Homes Plan
24 Nov 2025 · To ask the Secretary of State for Energy Security and Net Zero, if his Department will protect the Boiler Upgrade Scheme through any changes to the Warm Home Plan.
Boiler Upgrade Scheme
24 Nov 2025 · To ask the Secretary of State for Energy Security and Net Zero, what assessment has been done on the impact of energy bills in the event of the Boiler Upgrade Scheme being scaled back.
Heat Pumps
24 Nov 2025 · To ask the Secretary of State for Energy Security and Net Zero, how his Department plans to meet its target of 9.3 million heat pumps by 2035.
Nuclear Regulatory Review
2 Dec 2025 · To ask the Secretary of State for Energy Security and Net Zero, if he will publish all submissions made to the Nuclear Regulatory Taskforce.
Energy Company Obligation
8 Dec 2025 · To ask the Secretary of State for Energy Security and Net Zero, what plans he has to support SMEs that rely on the Energy Company Obligation scheme for predictable work after March 2026.
Energy Company Obligation
8 Dec 2025 · To ask the Secretary of State for Energy Security and Net Zero, what assessment his Department has made of the potential impact of ending funding for the Energy Company Obligation scheme in March 2026 on small and medium-sized businesses.
Energy: Prices
8 Dec 2025 · To ask the Secretary of State for Energy Security and Net Zero, what assessment his Department has made of the impact of the ending of funding for the Energy Company Obligation scheme in March 2026 on energy bills.
Small Modular Reactors: Insurance
6 Jan 2026 · To ask the Secretary of State for Energy Security and Net Zero, whether small modular reactors will be commercially insurable against nuclear radiation events.
Community Energy
13 Apr 2026 · To ask the Secretary of State for Energy Security and Net Zero, what progress the Government has made following his comments on the 15th July 2025 to improve opportunities for communities to buy clean power locally.
Community Energy
13 Apr 2026 · To ask the Secretary of State for Energy Security and Net Zero, how the Government is supporting communities to buy clean power locally.
Energy Performance Certificates: Rented Housing
15 Jul 2026 · To ask the Secretary of State for Energy Security and Net Zero, what assessment his department has made of the potential impact of the requirement for all rental properties to obtain a level of C for the Energy Performance Certificate on homeowners, and w