Sadiq Khan will today discuss new lockdown restrictions with London council leaders, as coronavirus cases in the capital continue to rise.

There are now 25 cases per 100,000 people in London, and the Mayor warned last Friday (September 18) that further curbs are “increasingly likely”.

It comes as England’s scientific advisor warned there could be 50,000 cases a day across the country by mid-October without further action.

Sir Patrick Vallance said that would lead to 200 deaths a day by mid-November – figures not previously seen since June.

A further 3,899 Covid-19 cases were confirmed on Sunday, and another 18 people died – taking the total number of deaths to 41,777.

But with figures often delayed over the weekend, and many Brits struggling to book tests, the number of new cases could be far higher.

London infections still appear to significantly lag Covid-19 hotspots in the north of England, which have seen well over 100 cases per 100,000 people.

But while there is no set trigger for a local lockdown, further restrictions are likely to be considered when there are more than 40 cases per 100,000.

Mr Khan met with Health Secretary Matt Hancock over the weekend – and Mr Hancock refused to rule out new measures for London within days.

Now the Mayor will discuss rising infections with top brass from London Councils, the Metropolitan Police Service, the Department for Health and Public Health England this afternoon.

Local leaders will then feed back to council chiefs in London’s 33 local authorities, and any recommendations for lockdown in the capital will be passed to Government.

Speaking on Friday, Mr Khan said he was “seriously concerned” by rising rates of infection in the city.

“I am of the firm view that we should not wait, as happened six months ago, for this virus to again spiral out of control before taking action,” he said.

“The best thing for both public health and the economy is new restrictions imposed early, rather than a full lockdown when it’s too late.”

Some 13.5 million Brits including in Manchester, Newcastle, Birmingham and Glasgow will be under local lockdown from tomorrow.

Boris Johnson has previously said he wants to avoid another national lockdown, calling it “the nuclear option”.

But the Prime Minister is expected to address the nation tomorrow with an update on the second wave of the virus.