Reeves is expected to make an announcement backing airport expansion next week, as part of major speech on plans to boost the economy. Asked if this was likely to include Heathrow, the chancellor did not answer directly but said the government had already signed off the expansion of London City Airport and Stanstead.

Rachel Reeves has already suggested to Sky News that she'll back the proposed third runway at Heathrow, and endorse expansion at Gatwick and Luton airports.

Chancellor of the Exchequer Rachel Reeves made the case for expanding Heathrow in the strongest hint yet that she’s preparing to green-light a controversial third runway at London’s busiest airport in a decision that’s divided the government.