Heathrow Airport faced severe disruptions on 21 March after a power substation fire led to a near 24-hour shutdown, impacting over 250,000 passengers. Airlines had warned Heathrow about vulnerabilities in its power supply days before the incident,

London Heathrow Airport was warned about possible issues with its power supplies a few days before a nearby fire cut electricity to the hub and forced Europe’s busiest airport into an unprecedented day-long blackout.

Heathrow Airport was warned about its power supply in the days before it closed because of an outage, MPs were told. Nigel Wicking, chief executive of Heathrow Airline Operators Committee, which represents airlines that use the west London airport, said there were a “couple of incidents” which made him concerned.