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Heathrow expansion incompatible with UK climate goals unless airlines do more, advisers say

By Thomson Reuters Sep 15, 2026 | 6:09 PM

By Susanna Twidale

LONDON, Sept 16 (Reuters) – Britain cannot expand London’s Heathrow Airport and still meet its climate targets unless airlines are required to take full ​responsibility for their emissions, the country’s climate advisers ‌said on Wednesday.

Britain’s Labour government last year backed a third runway at Heathrow, one of the world’s busiest airports, arguing the project would support economic growth.

Advice published on Wednesday by the Climate Change ‌Committee (CCC), ​at the government’s request, concluded there ⁠is no credible pathway ⁠under current policies for Heathrow to expand while Britain still meets its target of reaching net zero emissions by 2050.

“The government cannot expand Heathrow Airport without requiring ​the aviation industry to clean up its emissions,” CCC Chair Nigel Topping said during a briefing with journalists.

The ⁠committee said the government should ⁠introduce legislation requiring the industry to address ​all of its emissions by 2050, either by increasing the ​use of sustainable aviation fuel (SAF) or through engineered carbon-removal ‌credits.

Airlines agreed in 2021 to target net-zero emissions by 2050, relying mainly on a gradual shift to SAF. However, SAF accounts for less than 1% of global aviation ⁠fuel use and costs several times more than conventional jet fuel.

Some airlines have also invested in engineered carbon removals such as ⁠direct air ‌capture, which removes carbon dioxide from the ⁠atmosphere, but fewer than 2 million metric ​tons of ‌removals have been generated globally so ​far.

The committee ⁠called on the government to produce a 25-year strategy for net-zero aviation, phase in the full cost of decarbonisation for airlines and prepare contingency plans in case key technologies fail to scale up as expected.

(Reporting by Susanna Twidale. Editing ​by Mark Potter)