Just 675,000 people travelled through the west London airport last month, compared with 6,769,000 in May 2019.

Chief executive John Holland-Kaye said: “With the G7 starting today, ministers have a chance to kick-start the green global recovery by agreeing how to resume international travel safely and setting a mandate for sustainable aviation fuels that will decarbonise aviation.

“This is the time for them to show global leadership.”