Question to the Department for Transport:

To ask the Secretary of State for Transport, what steps she is taking to encourage the aviation industry to use more sustainable aviation fuel.

The SAF Mandate – which came into effect at the start of this year - is the UK’s key policy to decarbonise jet fuel. It obligates the supply of an increasing amount of SAF in the overall UK aviation fuel mix; starting at 2% in 2025, reaching 10% in 2030 and 22% in 2040.

We are also taking steps to grow a UK SAF industry. The Advanced fuels Fund (AFF) provides grants to support SAF projects looking to develop large scale production facilities in the UK. We have extended the AFF for a further year to March 2026, with an extra £63m of funding.

The Government has also committed to introduce an industry-funded revenue certainty mechanism. On 29 January 2025, we published our response to the SAF Revenue Certainty Mechanism consultation, confirming that we are proceeding with the guaranteed strike price model.