Britons are now being advised to wear face masks on public transport and in some shops where social distancing is not possible.

After weeks of insisting that there was little scientific evidence to suggest that such coverings were effective in preventing the spread of coronavirus, the government has changed its advice.

The updated guidance has been published in a 50-page blueprint for lifting the UK out of lockdown, expanding on a speech from Prime Minister Boris Johnson on Sunday night that many had said was confusing.

Details included in “Our Plan to Rebuild: The UK Government’s COVID-19 recovery strategy” suggest people should wear face-coverings in enclosed spaces where social distancing is not always possible and where they come into contact with others who they do not normally meet, such as on public transport or in some shops.