Sadiq Khan warned that London is at a “very serious tipping point” in the fight against coronavirus, as he pushed for a review of the 10pm curfew.
The Mayor expressed concerns that current restrictions are insufficient and urged those in positions of power to have the “humility” to revisit the measures.
His comments came as residents in one east London borough were advised not to avoid visiting other households by the local council.
Mr Khan tweeted: “London is at a very serious tipping point in the fight against COVID-19, and we need effective measures to stop the spread.
“This includes a rapid review of the 10pm curfew, given what we’ve seen in the streets outside pubs and bars across the UK.”
Speaking on BBC London he added: “I’m concerned though, when I see what’s happening at 10pm and thereafter in pubs, bars and restaurants across London but also across the country.
“What I’m saying to the government is they should undertake a rapid review on the effectiveness of the 10pm curfew, because I worry inadvertently the virus could be spreading rather than it being reduced by this 10pm curfew.
“That’s why I think that when you’re in a potion of power and influence whether you’re the mayor or the government, you should have the humility to say listen, you know what this may not be working, let’s have a look at this again because it could be counterproductive.”
In an open letter, the mayor of Tower Hamlets, John Biggs, asked those who live in the area to avoid visiting other households “unless absolutely necessary” due to a rise in coronavirus cases.
Mayor of London Sadiq Khan and councils in the capital have urged the Government to implement additional measures for Londoners, but so far no extra restrictions have been put in place by ministers.
Tower Hamlets’ rate for the seven days to September 28 was 44.0 cases per 100,000 people, up from 38.5 the previous week.
Mr Biggs called the situation a “matter of life and death” and said urgent action was required, adding that the borough had one of the highest levels of Covid-19 in London.
Rates are lower in south east London, with the latest figures putting Lewisham on 24.2 per 100,000, Greenwich 27.8 per 100,000, Bromley 21.1 per 100,000 and Bexley 19.3 per 100,000.