The Prime Minister has warned that stricter measures may be required to enforce social distancing after some members of the public have disregarded the Government's advice.

Speaking at his daily briefing on Covid-19, Johnson reminded the UK that even for people who do not believe they are at risk to coronavirus, "there are plenty of people you could infect".

"Don't think fresh air in itself automatically provides some immunity," Johnson said.

"Take this advice seriously, follow it, because it's absolutely crucial.

"My message is you've got to do this in line with the advice, you've got to follow the social distancing rule - keep 2m apart."

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When asked if stricter protocols to protect the public could be introduced, he replied: "I don't think you need to use your imagination very much to see where we might have to go, and we will think about this very, very actively in the next 24 hours.

"It's so important that that pleasure and that ability is preserved but it can only really be preserved if everybody acts responsibly and conforms with those principles of staying apart from one another and social distancing.

"If we can't do that then, yup, I'm afraid we're going to have to bring forward tougher measures."