Sustainable Aviation Fuel Bill

Monica Harding Excerpts

2nd reading
Wednesday 11th June 2025 Commons Chamber

[Heidi Alexander]

My hon. Friend is completely right to highlight the benefits of cracking on and delivering airspace modernisation. It could mean not only more direct flights and therefore less use of carbon, but noise benefits for communities close to airports.

We are determined to make rapid progress on this issue because we have an iron-clad belief that our success as an island nation rests on our international connectivity. The flow of trade, exporting British expertise and the movement of people for business and leisure all depend on aviation continuing to grow and thrive. We could put our head in the sand and pretend that people do not want to fly, that the sector does not support hundreds of thousands of jobs, that people do not look forward to foreign holidays or family reunions and that air freight is not a significant part of our trade by value, but we would be on the wrong side of both reality and public aspiration.

The truth is that demand for flight is only going in one direction. According to the Civil Aviation Authority, passenger levels were 7% higher in 2024 than in the previous year. If we do not respond and if we do not set aviation up for long-term success, we do not just make ourselves poorer today, we kiss goodbye to the growth and opportunity this country needs in the decades to come.

I want a future where more passengers can take to the skies, not fewer. But like the rest of our economy, that must mean emitting less carbon, not more. This Bill will help secure that future. It builds on the fantastic work across Government and industry, led by my hon. Friend the Aviation Minister, which saw the SAF mandate come into effect earlier this year. As we run towards a future of green flight, we know that sustainable aviation fuel is one of the biggest levers we can pull. It emits 70% less greenhouse gases on average than fossil fuels. It can be used in existing infrastructure and aircraft engines, and it is now backed by a mandate that is rightly ambitious: 10% SAF in the fuel mix by 2030 and 22% by 2040. I want as much as possible to be made in the UK.

[Monica Harding (Esher and Walton) (LD)]

The mandate, which we welcome, calls for only 22% sustainable jet fuel usage by 2040, while the Chancellor has said that she wants a third runway in use at Heathrow by 2035. That would mean more aviation-related health hazards to my constituents. Does the Minister agree that we should not pursue Heathrow expansion until we can turbocharge the SAF mandate and bring non-sustainable fuel usage down further?

[Heidi Alexander]

The Government have been clear that we will permit airport expansion only when it is consistent with our legally binding climate change targets. SAF is one way in which we can clean up aviation, but the work we are doing on the development of new aircraft technologies, alongside the work we are doing on airspace modernisation, is all connected to how we bring those emissions down. I point out to the hon. Lady that the expansion of Heathrow has already been modelled in relation to the sixth carbon budget.

We have been clear that the mandate alone is not enough. Creating the demand for SAF but not the supply does not get us where we want to be. We have heard the industry’s concerns around risk and uncertainty for investment, and that is why we are acting today. The Bill creates a revenue certainty mechanism that will boost SAF production by giving investors confidence to choose the UK.