A pedestrian walks past closed-down shops on an empty Regent Street in London on April 2, 2020, as life in Britain continues during the nationwide lockdown to combat the coronavirus pandemic.

Britain is extending its coronavirus lockdown measures by at least another three weeks, Foreign Minister Dominic Raab said Thursday.

The government's decision to prolong its shelter-in-place restrictions followed a meeting with scientists earlier in the day. Raab, who is deputizing for Prime Minister Boris Johnson, said the rate of Covid-19 infections has not slowed enough to justify lifting the shutdown.

"Any change to our social-distancing measures now would risk a significant increase in the spread of the virus," Raab said at the government's daily press conference. "That would threaten a second peak of the virus and substantially increase the number of deaths."

Restrictions on public life have been in place in the U.K. since March 23. People have been told to stay at home, with the exception of limited shopping — for essential food and medical supplies — and exercise.

Raab outlined five things the government wanted to see before looking to adjust the lockdown measures currently in place. They are as follows:

That the U.K.'s National Health Service is protected so it's able to cope with the epidemic. Evidence of a sustained and consistent fall in daily deaths from the virus. Reliable data showing the rate of infection is decreasing to "manageable levels." Testing and personal protective equipment in hand. Confidence that any adjustments to current measures risk a second peak of infections.

"Now is not the moment to give the coronavirus a second chance," Raab said.