Britain will fly around 150 British citizens and 50 non-British nationals out of the Chinese city of Wuhan, the government said on Thursday, after an earlier departure was blocked by Chinese authorities.

Infections from China's coronavirus spread to more than 8,100 people globally on Thursday, surpassing the 2002-2003 SARS epidemic's total in a fast-spreading health crisis forecast to pummel the world's second-largest economy.

"We are pleased to have confirmation from the Chinese authorities that the evacuation flight from Wuhan airport to the U.K. can depart at 0500 local time on Friday (2100 GMT on Thursday)," British Foreign Secretary Dominic Raab said.