Question follow-through · 110897
Air Force: Alternative Fuels
To ask the Secretary of State for Defence, what estimate he has made of the additional cost to the public purse of the Royal Air Force transitioning to 100 per cent sustainable aviation fuel by 2040; and whether his Department has undertaken any assessmen
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
- 4 Feb 2026
- Target answer date
- 9 Feb 2026
- Answer
- 12 Feb 2026 · 8 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 Defence and foreign affairs
- Aviation: Fuels · 12 Feb 2026
- Ministry of Defence: Tyres · 20 Feb 2026
- Military Aircraft: Ministers · 26 Feb 2026
- Military Aircraft: Ministers · 26 Feb 2026
- Military Aircraft: Ministers · 26 Feb 2026
Shared topic keywords suggest a connection; they do not establish a follow-up.
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
4 Feb 2026
Question tabled
To ask the Secretary of State for Defence, what estimate he has made of the additional cost to the public purse of the Royal Air Force transitioning to 100 per cent sustainable aviation fuel by 2040; and whether his Department has undertaken any assessmen
9 Feb 2026
Target answer date
Date supplied by the official written-questions record.
12 Feb 2026
Answer published
The Royal Air Force (RAF) procures its aviation fuel in the UK from commercial suppliers at market rates. As a result, this makes accurate long-term cost forecasting challenging. The price of aviation fuel, including Sustainable Aviation Fuel (SAF), is su...
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.
Aviation: Fuels
12 Feb 2026 · To ask the Secretary of State for Defence, what estimate the RAF has made of the cost of the incremental move to being 22% sustainable aviation fuel by 2040 in each year individual year for which figures are available.
Ministry of Defence: Tyres
20 Feb 2026 · To ask the Secretary of State for Defence, what information their Department holds on (a) the proportion of tyres procured that were re-tread tyres for (i) Department-operated and (ii) commercially contracted heavy vehicle fleets, including lorries, buses
Military Aircraft: Ministers
26 Feb 2026 · To ask the Secretary of State for Defence, pursuant to the answer of 16 July 2025 to Question 66297 on Military Aircraft: Ministers, how many flights that includes.
Military Aircraft: Ministers
26 Feb 2026 · To ask the Secretary of State for Defence, pursuant to the answer of 27 January 2026 to Question 106742 on Military Aircraft: Ministers, whether the use of RAF CSAT aircraft includes use of military helicopters.
Military Aircraft: Ministers
26 Feb 2026 · To ask the Secretary of State for Defence, pursuant to the answer of 27 January 2026 to Question 106742 on Military Aircraft: Ministers, how many tasks there have been from RAF CSAT aircraft since July 2024.
Aviation: Fuels
4 Mar 2026 · To ask the Secretary of State for Defence, what estimate his Department has made of (a) the projected market price per litre of conventional aviation turbine fuel (Jet A-1) in each year from 2025 to 2040 and (b) the marginal cost difference per litre betw
Ministry of Defence: Procurement
16 Mar 2026 · To ask the Secretary of State for Defence, whether procurement contracts issued by the Ministry of Defence must include provisions relating to (a) diversity, equality and inclusion and (b) climate change or sustainability targets or reporting requirements
Unmanned Air Systems
16 Mar 2026 · To ask the Secretary of State for Defence, whether he has held discussions with his Ukrainian counterpart on cooperation relating to counter-unmanned aerial vehicle (UAV) capabilities; whether he has considered the deployment of Ukrainian counter-UAV (a)
Ministry of Defence: Procurement
16 Mar 2026 · To ask the Secretary of State for Defence, how many and what proportion of contracts have been awarded by his Department in this Parliament under the terms of the Single Source Contract Regulations 2014 in each month since they came in to force; and with
Unmanned Air Systems
24 Mar 2026 · To ask the Secretary of State for Defence, what assessment he has made of the potential implications for his Department's policies of the lessons from the Russia-Ukraine war on the use of unmanned systems in warfare; and what steps his Department is takin
Defence
24 Mar 2026 · To ask the Secretary of State for Defence, what changes have been implemented by his Department as a result of operational lessons identified from the war in Ukraine, including (a) force structure and procurement priorities, (b) stockpiling and supply cha
Unmanned Air Systems
25 Mar 2026 · To ask the Secretary of State for Defence, how many times has the Drone Task Force met since 4 July 2024, which Ministers in Government Departments and private sector companies constitute it, and which a) countries and b) companies are they engaged with i