He will tighten restrictions on outdoor activities if people do not follow the rules to prevent nCoV from spreading.

"I don't want to eliminate exercise from possible reasons ... If too many people do not comply," British Health Minister Matt Hancock said today in an interview with the BBC. "Right now, a lot of people are leaving home based on that reason. But people should not circumvent the law because this means the virus will spread more widely and we will have to take further action."

Other European countries like Italy and France are imposing stricter rules than the UK to prevent people from leaving home. Experts fear spring warming will encourage more Britons to flock to the park, especially on weekends.

The Lambeth area in London closed on Brockwell Park on April 5 after a series of residents sunbathed or gathered in groups yesterday.

Minister Hancock said he was "unbelievable" when he saw a small group of people disregard the recommendation to keep the community separate from the government.

If people do not strictly follow the rules, now allowing them to walk, jog or cycle once a day, excluding sunbathing, he will ban all outdoor exercise.

Government health advisers have predicted Britain will find it difficult to widen the blockade until at least the end of May because Covid-19 is affecting more and more seriously. Many British royal officials and members, such as Prime Minister Boris Johnson, Health Minister Matt Hancock and Prince Charles, have been infected with nCoV.