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Question follow-through · 40370

Aviation: Fuels

To ask the Secretary of State for Transport, with reference to the Project Willow report, published on 19 March 2025, what assessment she has made of the potential merits of removing the Hydrotreated Esters and Fatty Acids cap in the Sustainable Aviation

answeredDepartment for Transport

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 Transport
Tabled
21 Mar 2025
Target answer date
25 Mar 2025
Answer
31 Mar 2025 · 10 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 Transport

Shared topic keywords suggest a connection; they do not establish a follow-up.

Votes on this topic

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Recorded timeline

  1. 21 Mar 2025

    Question tabled

    To ask the Secretary of State for Transport, with reference to the Project Willow report, published on 19 March 2025, what assessment she has made of the potential merits of removing the Hydrotreated Esters and Fatty Acids cap in the Sustainable Aviation

  2. 25 Mar 2025

    Target answer date

    Date supplied by the official written-questions record.

  3. 31 Mar 2025

    Answer published

    We welcome the Project Willow Report and are pleased that nine potential business models have been identified to be taken forward at Grangemouth. To help make these models a reality, the Prime Minister recently announced a commitment of at least £200m thr...

Open official record

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.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Aviation: Alternative Fuels

29 Apr 2025 · To ask the Secretary of State for Transport, what assessment she has made of the potential merits of commencing negotiations with prospective Sustainable Aviation Fuel producers prior to the anticipated introduction of the Revenue Certainty Mechanism in Q

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Aviation: Alternative Fuels

29 Apr 2025 · To ask the Secretary of State for Transport, what discussions she has had with prospective Sustainable Aviation Fuel producers on the viability of first mover projects.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Renewable Fuels

1 May 2025 · To ask the Secretary of State for Transport, what discussions he has had with Cabinet colleagues on proposed changes to the hydroprocessed esters and fatty acids (HEFA) cap.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Aviation: Alternative Fuels

13 May 2025 · To ask the Secretary of State for Transport, whether her Department has made an assessment of the potential merits of expanding the eligibility of feedstocks in the SAF mandate to include dedicated energy crops.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Buses: Carbon Emissions

10 Jun 2025 · To ask the Secretary of State for Transport, what steps she is taking to encourage bus manufacturers to produce zero-emission buses.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Buses: Manufacturing Industries

17 Jun 2025 · To ask the Secretary of State for Transport, how many buses were ordered from British bus manufacturers with (a) full and (b) partial financial support from (i) the Government and (ii) devolved English authorities between 2011 and 2025.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

UK Bus Manufacturing Expert Panel

3 Jul 2025 · To ask the Secretary of State for Transport, whether the Bus Manufacturing Expert Panel has made an assessment of trends in the level of demand for buses; and whether they have considered the (a) location and (b) type of demand over the next 10 years.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Bus Services: Scotland

10 Oct 2025 · To ask the Secretary of State for Transport, what recent discussions her Department has had with the Scottish Government on extending the provisions of the Bus Services Bill to Scotland.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Public Transport

10 Oct 2025 · To ask the Secretary of State for Transport, when her Department plans to publish the integrated public transport strategy.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Renewable Fuels: Grangemouth

4 Nov 2025 · To ask the Secretary of State for Transport, what assessment she has made of the recommendations of Project Willow on the HEFA Cap delay.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Buses: China

5 Nov 2025 · To ask the Secretary of State for Transport, what assessment she has made with Cabinet colleagues of the potential security implications of the operation of buses that have been bought from China that can potentially be remotely deactivated.

Unreviewed candidateSame MP and department; topic relationship is unreviewed

Buses: National Security

5 Nov 2025 · To ask the Secretary of State for Transport, whether her Department has emergency contingency plans in the event of remote de-activation of buses by a foreign manufacturer.