The death toll rose to 7,172 after 936 people died in 24 hours, making it the deadliest day in the country.
England recorded the most deaths (6,483), followed by Scotland (366), Wales (245) and Northern Ireland (78).
Birmingham has also emerged as the new epicenter of the disease with the highest number of cases.
University hospitals Birmingham NHS Foundation Trust said the death toll in its hospitals has left 300 dead today.
At 5 p.m. on April 7, the trust had announced 306 deaths, according to figures from NHS England.
Nearly 1,400 of the 55,242 confirmed cases in the UK occurred in Birmingham, more than any area in London.
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The London NHS University Healthcare NHS Trust announced 209, the King’s College Hospital NHS Foundation Trust announced 191 and the Royal Free London NHS Foundation Trust announced 174.
A total of 16 NHS trusts in England have announced at least 100 deaths.
The second NHS Nightingale hospital, which was built at the National Exhibition Center in Birmingham, is scheduled to open on Friday, Downing Street said.
The Prime Minister’s official spokesman said he would initially have 500 beds to treat coronavirus patients, with capacities up to 2,000.
“Huge credit should be given to everyone involved in setting up the hospital so quickly,” said the spokesperson.
He added that the third Nightingale hospital in Manchester is due to open in “next week”.
But it seems that the growth of cases seems to be slowing, the national locking seems to have an effect.
Data collected from 2 million people in Britain using a new COVID-19 symptom tracking application suggests that locking measures are slowing the spread of the disease.
Their latest figures suggest that around 1.4 million people in Britain aged 20 to 69 are currently presenting with symptomatic COVID-19, down from 1.9 million on April 1 as some have recovered and fewer people report new symptoms.
Tim Spector, who led the king’s team analyzing the symptom tracker data, said the signs were “encouraging”.
“Even though hospital admissions and deaths are still on the rise, we hope these figures will provide a well-deserved light at the end of the tunnel,” he said.
Spector said his data, however, showed that major British cities like London, Birmingham, Glasgow and Liverpool “continue to have very high levels of symptoms in the community”.
London Mayor Sadiq Khan said on Wednesday that Britain was unable to facilitate the shutdown, as the peak of the COVID-19 epidemic is expected to be more than a week away.