Britain has suffered the worst daily death toll since the pandemic began.
Public Health England said an additional 1,610 people died within 28 days of testing positive for Covid-19.
This is the highest number of deaths in the UK reported in a single day since the outbreak began.
It was revealed that about one in eight people in England would have tested positive for antibodies to Covid-19 by December last year, up from one in 14 in October, new figures show.
Antibody data on infection in private households suggests that one in 10 in Wales was also infected by December, one in 13 in Northern Ireland and one in 11 in Scotland.
The numbers come from the Covid-19 infection survey by the Office for National Statistic in collaboration with Oxford University, Manchester University, Public Health England and Wellcome Trust.
They are based on the proportion of the population likely to test positive for antibodies to Covid-19 based on blood test results from a sample of people aged 16 and over, but do not reflect everyone who has had coronavirus and do not take into account that the antibodies are involved slack off with time.
The ONS found “significant differences” between regions in England. It is estimated that 17 percent of people in private households in Yorkshire and Humber tested positive for antibodies in December, compared with 5 percent in the south-west of England.
In London it was 16 percent in December, up from 11 percent in October, while in the North West it was 15 percent, up from 6 percent in October.
In the West Midlands, 14 percent had Covid, up from 8 percent in October, while 8 percent in the southeast and east of England had the virus, both up from 5 percent in October.
The study came when Health Secretary Matt Hancock revealed he was self-isolating after receiving a warning on the NHS Covid-19 app.
In a video posted on Twitter, he said, “Last night I got a call from the NHS coronavirus app. That means I will self-isolate at home and don’t leave home until Sunday.”
Mr Hancock, who previously had coronavirus, said self-isolation is important because it’s “how we break the chains of transmission”.