COVID-19 pandemic lockdown in Italy
Universal Credit claims have soared by 1.6m since March, when the UK was first placed under lockdown.
Boris Johnson thanked extremely vulnerable people who have been shielding, saying their actions had saved “thousands of lives”.
PM warns some people will face 14 days "captivity" under the new scheme but says it is the route out of the pandemic.
The government has also said there will not be a review into lockdown fines for childcare-related travel.