The official said he had raised concerns about Heathrow’s electricity supply days before a power outage forced it to shut down. Heathrow disputed the relevance of the official’s comments.

Heathrow Airport was warned about the "resilience" of its power supply in the days before a fire which shut down the airport for more than a day last month.

Heathrow airport was warned about its power supply in the days before it closed because of a fire, MPs were told. Nigel Wicking, chief executive of Heathrow Airline Operators Committee, which represents airlines that use the west London airport,