In a letter to the Prime Minister, Mr Khan demanded school close earlier than expected and remain shut until sometime after Christmas.
The Mayor expressed his concern that the infection rate is now spiralling out of control and needs to be addressed as soon as possible.
Within his letter, Mr Khan stated the Government must now increase testing in the capital to those unable to work and students and staff in the education system.
This comes as schools in the southeast London borough of Greenwich were forced to close and move classes online.
The borough has seen a sharp rise in cases thus sparking the move to contain the infection rate in the area.
Mr Khan said: “The surge in coronavirus cases across our capital is deeply concerning.
“I am calling on the government to urgently provide additional support to get the spread under control, save lives and livelihoods and ensure our NHS is not overwhelmed this winter.”
“Increased testing is key to this, which is why I want to see regular asymptomatic testing extended to all those unable to work from home and to students and staff at London’s secondary schools, sixth-form college and further education colleges.”
More to follow…