London mayor Sadiq Khan has signalled his support for a legal challenge to the expansion of Heathrow airport.

The mayor has revealed that he has directed London’s transport authority – Transport for London – to provide “advice and assistance” to the boroughs of Hillingdon, Richmond, Wandsworth, Windsor and Maidenhead, as they prepare a joint legal challenge with environmental group Greenpeace opposing the construction of a third runway at Heathrow.

“It is likely that [Transport for London] will be named in this action as an interested party. As and when that is the case, the mayor will take a decision on joining the legal challenge,” the mayor’s office says in a statement.

Khan has previously made clear his support for a new runway at Gatwick rather than Heathrow over concerns about the impact of additional noise and pollution on London's citizens.

Last month the UK government gave its support to the expansion of Heathrow airport.

Source: Cirium Dashboard