The news comes as RAAC was behind the closure of 147 schools over the past few weeks after concerns over the concrete’s safety were raised.
National outlets said Heathrow was taking “remedial steps” to mitigate safety risks after finding that its Terminal 3 contained the material while Gatwick said it monitored the presence of RAAC regularly while refusing to disclose the location.
“Passenger and colleague safety will always be our first priority and we will continue to update stakeholders across the sector as our plans for permanent solutions progress,” a Heathrow spokesperson said.
Meanwhile, the Manchester Airports Group – which owns Stansted, Manchester and East Midlands airports – told The Guardian the three hubs were being double-checked despite the unlikelihood of them containing RAAC.