Despite external speculation, Khan's stance against a new runway at Heathrow remains unchanged, although he is open to considering formal proposals for expansion.

The UK government is reportedly planning to limit the powers of environmental watchdogs and restrict judicial reviews related to property and infrastructure developments.

He emphasized that any expansion must align with the recommendations of the government's Climate Change Committee, which includes meeting strict carbon emissions, noise, and air pollution targets.

A vote on the principle of the Heathrow expansion is anticipated, marking a significant moment since the last vote on this issue occurred in 2018.

During a session with the London Assembly, Khan emphasized the necessity for the UK to respect its environmental targets, reinforcing his position on the importance of sustainable development.

London Mayor Sir Sadiq Khan has firmly reiterated his opposition to the expansion of Heathrow Airport, citing significant concerns related to the climate emergency.

Khan outlined three major concerns regarding any potential expansion: adherence to carbon targets, noise pollution, and air pollution.

Khan won a third term in 2024, campaigning against airport expansions in London, reinforcing his commitment to environmental issues.

Prominent critics of the Heathrow expansion, including Khan and Net Zero Secretary Ed Miliband, have consistently voiced their opposition, reflecting a broader concern among several Cabinet members.

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In contrast, Chancellor Rachel Reeves is expected to support the proposed third runway at Heathrow and expansions at Gatwick and Luton in her upcoming speech, aiming to stimulate economic growth.

While recognizing the aviation sector's importance for economic growth and job creation, Khan stressed the urgent need to address climate change commitments.