The UK is committed to supporting sustainable aviation development through its Jet Zero Strategy, which aims to achieve net-zero aviation emissions by 2050 through initiatives like sustainable aviation fuels (SAF), technological advancements, and infrastructure support.
As the UK aims to achieve net-zero greenhouse gas emissions by 2050, advancing sustainability within the aviation sector is becoming increasingly critical. Aviation is a key driver of business and leisure travel in the UK, supporting over a million jobs and contributing billions to the economy.¹ However, aviation accounted globally for 2.5% of carbon dioxide emissions before the pandemic,² and with travel numbers back on the rise again post-pandemic, decarbonisation of the aviation industry is once again becoming a more urgent topic to address. While there are ongoing global efforts to decarbonise transportation, the aviation industry faces unique challenges, in particular due to the high energy density of jet fuel.
Executing the Jet Zero Strategy
In 2022, the UK government introduced its Jet Zero Strategy, a comprehensive roadmap aiming for net-zero aviation by 2050 and net-zero domestic flights and airports by 2040. This strategy highlights six key priority areas: improving the efficiency of the airspace and aviation system, scaling sustainable aviation fuels, supporting the development of zero-emission aircraft, fostering carbon markets and greenhouse gas removal technologies, providing consumers with better information for making sustainable aviation choices, and increasing understanding of aviation’s non-CO2 impacts, such as contrails and nitrogen oxides.
While the initiative has garnered support, environmental groups have criticised Jet Zero for relying too heavily on technologies that are not yet commercially viable, calling for more immediate actions to effectively reduce emissions.
To further advance these goals, the UK Government has announced a transformative £43m funding initiative designed to accelerate the development of green aviation technologies. This investment is expected to boost economic growth, create high-skilled jobs, and help the aviation sector meet its ambitious emissions targets. Key areas of focus include advancing the technology behind zero-emission aircraft and developing low-carbon fuels. Notably, research will also address the reduction of climate-warming water vapour trails produced by planes, which represent a substantial but often overlooked aspect of aviation’s climate footprint.
Developing sustainable aviation fuels
At the heart of the UK’s plan is sustainable aviation fuel, an alternative fuel that can reduce lifecycle emissions by up to 70% or more compared to conventional kerosene, and made from renewable or recycled sources, such as used cooking oil or household waste.
The upcoming Sustainable Aviation Fuel Bill, set to take effect later this year, will enhance stability in the SAF market by ensuring fixed prices for UK producers, helping the country meet its climate objectives. This effort is further supported by an investment of £63 million designated for the construction of new SAF production facilities, complemented by an additional £2.3bn allocated through the Aerospace Technology Institute programme over the next decade to support innovative advancements in aerospace and create thousands of skilled jobs.
Starting 1 January, 2025, the government has introduced a SAF mandate requiring increasing SAF blends in the fuel mix. This begins with a 2% blend in 2025, gradually increasing to 22% by 2040.
Progress is already being made, with construction underway for an SAF production plant in Teesside and the development of blending facilities that could supply hundreds of thousands of tonnes of greener fuel.
However, the outlook is not entirely positive. As of late 2025, actual SAF uptake was falling short of its first annual target, with only 1.6% of fuel consumption comprising SAF.
Several sectors have set a precedent for the aviation industry to follow, pursuing decarbonisation through advanced fuel development rather than immediate full electrification, recognising the current technical limits of batteries for high-energy, high-performance transport. For example, the 2026 Formula 1 (F1) regulations mandated the use of 100% sustainable fuel, designed to be ‘drop-in’ compatible with existing engines while delivering near net-zero lifecycle emissions. The aviation industry also relies on its fuel to be ‘drop-in’, working with existing engines. F1’s new fuels are expected to rely heavily on advanced synthetic e-fuels, made using captured CO2 and green hydrogen. Aviation is exploring similar Power-to-Liquid fuels for long-haul flights, where battery or hydrogen aircraft are less feasible. The demand for sustainable fuel development across sectors will hopefully accelerate innovation and support the scaling of sustainable aviation fuels.
Supporting decarbonisation through advancing infrastructure
Fuel alone won’t get aviation to net-zero. The Government initiatives also aim to support plans for sustainable airport expansion, including developments at major airports such as Heathrow, Gatwick, and Luton. Transport Secretary Heidi Alexander remarked, “We’re backing UK businesses by powering up green aviation. Our £43m investment will deliver the cutting-edge technology of the future, grow the economy and support highly skilled jobs as part of our mission to deliver national renewal.” ⁵
Major UK airports have also pledged sustainability targets, including electrifying ground operations, improving energy efficiency, and increasing the use of renewable energy. For example, Heathrow has committed millions of pounds to subsidise SAF usage, targeting blends above national minimums.⁴
A global effort
The government’s recent investment is intended to unlock private-sector capital, projecting that the shift towards low-carbon fuels could add up to £5bn to the UK economy by 2050. By supporting British businesses and academic institutions, the government aims to position the UK as a global leader in green aviation, fostering thousands of high-skilled jobs in technological advancement and scientific research.
A portion of the funding is dedicated to international collaboration, particularly to assist regions like Africa and the Caribbean in tracking and utilising sustainable fuels. This outreach initiative aims to ensure fair competition for UK airlines while advancing global efforts towards aviation decarbonisation.
A path forward
As the aviation industry faces growing pressure to reduce its carbon footprint, investments in innovative technologies and collaborative initiatives, such as the Jet Zero Taskforce, are essential. Through a commitment to sustainable practices and policies, the sector can not only contribute to environmental preservation but also enhance its resilience and competitiveness in a rapidly changing global landscape.
Tim Alderslade, Chief Executive of Airlines UK, recognises the importance of the continued efforts of the Jet Zero Taskforce, commenting that “investment in zero and lower emission technology is critical for achieving a sustainable future for UK aviation. It builds upon last year’s launch of the sustainable aviation fuel mandate and the upcoming implementation of the SAF revenue certainty mechanism.” ⁵
By investing in advanced technologies, supporting the development of sustainable aviation fuels, and enhancing airport infrastructure, the UK is paving the way for a greener future in air travel. This proactive approach not only aims to significantly reduce carbon emissions but also reflects a broader commitment to sustainable progress, showcasing responsibility and leadership in future-proofing the aviation industry.
References
- https://www.sustainableaviation.co.uk/goals/climate-change/
- https://www.gov.uk/government/news/skys-the-limit-as-uk-sets-out-strategy-to-reach-net-zero-aviation-and-deliver-guilt-free-flying
- https://www.sustainableaviation.co.uk/goals/climate-change/
- https://www.theguardian.com/uk-news/2026/feb/13/heathrow-overcrowded-travellers-walking-on-wrong-side-left-right
- https://www.innovationnewsnetwork.com/43m-investment-propels-uk-green-aviation-and-economic-growth/65648/
Please note, this article will also appear in the 25th edition of our quarterly publication.