According to sources close to the mayor's office, the shutdown of the UK's capital is expected in the coming days.

A source close to Sadiq Khan, London's mayor, also said: "We expect a shutdown of London but nobody in central Government is saying when that will be or what form it will take. The prime minister is saying we need to go faster and further and there is a spike of cases in London which is running ahead of the country but what that actually means the mayor's office doesn't yet know because Downing Street hasn't said."