Question follow-through · 8731
Navy: Fuels
To ask the Secretary of State for Defence, what estimate the Royal Navy has made of the cost of the incremental move to sustainable aviation fuel as set out in the UK Government's SAF mandate.
About this written question
A written question asks a government minister for information in writing. Parliament publishes the question and any answer.
- Answering body
- Ministry of Defence
- Tabled
- 10 Jun 2026
- Target answer date
- 16 Jun 2026
- Answer
- 16 Jun 2026 · 6 calendar days after tabling
Elapsed calendar days describe the record timeline, not whether Parliament considers an answer on time.
Votes on this topic
- Opposition Day Motion: Defence spending and readiness - Prime Minister's Amendment · 23 Jun 2026
- Opposition day: Defence spending and readiness · 23 Jun 2026
- Armed Forces Bill Report Stage: Amendment 11 · 22 Jun 2026
These Commons divisions share a topic label. The question did not necessarily lead to a vote.
Recorded timeline
10 Jun 2026
Question tabled
To ask the Secretary of State for Defence, what estimate the Royal Navy has made of the cost of the incremental move to sustainable aviation fuel as set out in the UK Government's SAF mandate.
16 Jun 2026
Target answer date
Date supplied by the official written-questions record.
16 Jun 2026
Answer published
Royal Navy F-44 military aviation fuel is exempt from the Sustainable Aviation Fuels (SAF) mandate, and no estimates have been made of the cost of transitioning to SAF. The Ministry of Defence continues to monitor developments in SAF and assess their pote...
Official data retrieved 28 Sept 2026.
Later records
Possible follow-up questions
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No later same-department questions indexed.
This is an absence in covered public data, not evidence that no follow-up occurred elsewhere.