UK Climate Advisers Warn Heathrow Expansion Clashes With Net Zero Target

The Climate Change Committee, which advises the UK government on climate policy, delivered the assessment as a range of UK climate experts echoed the same message during the week.

Nigel Topping CMG, who chairs the committee, said emissions from flying are projected to rise even without any expansion of Heathrow, and that the UK has no credible plan in place to reduce them. He described the gap as a serious challenge to the country's climate commitments and said a Heathrow expansion is "not currently compatible with the UK's Net Zero target."

The advisers pointed to demand management as a possible lever if technology capable of bringing aviation emissions down does not materialise. In practical terms, that could mean limiting passenger demand at the very facility whose sprawling infrastructure would be built to serve it.

The warning lands on a project that would add significant new capacity at the UK's largest airport, at a time when the government is weighing the expansion against its binding climate goals.

Topping's comments came alongside similar concerns from other UK climate specialists this week, all focused on whether aviation growth and the country's emissions targets can be reconciled.