Ministers acknowledge ‘immense distress and disruption’ to passengers after substation fire forces airport to shutHeathrow airport closed –live updatesDowning Street has said there are “questions to answer” after a fire at an electrical substation closed down London Heathrow airport, stopping around 1,300 planes and disrupting the journeys of hundreds of thousands of global passengers.Counter-terror police are leading the investigation into the “unprecedented” incident that left Britain’s biggest airport unable to function as engineers tried to restore power, but said there was “no indication of foul play”. Continue reading...