Mayor of London Sadiq Khan declared the ongoing COIVD-19 outbreak a "major incident" in the British capital on Friday, saying hospitals could be overwhelmed if people do not stay at home.

"Today I have declared a major incident in London because the threat this virus poses to our city is at crisis point," he said. 

"One in 30 Londoners now has COVID-19. If we do not take immediate action now, our NHS could be overwhelmed and more people will die."