The PM has said everyone in the UK should avoid “non-essential” travel and contact with others to curb coronavirus – as the country’s death toll hit 55.
Boris Johnson said people should work from home where possible as part of a range of stringent new measures.
Pregnant women, people over the age of 70 and those with certain health conditions should consider the advice “particularly important”, he said.
People in at-risk groups will be asked within days to stay home for 12 weeks.
Health Secretary Matt Hancock told the House of Commons the number of people to have died with the virus in England had risen to 53 – and “the disease is now accelerating”.