Heathrow had enough power to operate despite blaze, National Grid boss says

Heathrow Airport could have kept operating despite the substation blaze that disrupted its electricity supply on Thursday, the head of the National Grid has said.

Around 200,000 travellers were stranded worldwide when Europe’s busiest airport abruptly shut down.

Passengers who were already in the air, meanwhile, faced being diverted to airports in France, Ireland and even the US.

But...