India, March 22 -- London's Heathrow Airport has resumed operation after an 18-hour shutdown due to power loss caused by a nearby substation fire that triggered massive disruption in the city.

The substation fire even left a large number of households in London without power.

About 200,000 passengers were affected as flights were grounded throughout Friday, with inbound planes being diverted to other airports in Europe after flames ripped through the North Hyde plant in Hayes, west London, on Thursday evening, reported BBC.

Meanwhile, Heathrow Airport authorities said they expect the facility to operate fully from Saturday.

Authorities asked travellers to consult airlines before travelling to the airport.

The Airport posted on X: "Ou...