Daily coronavirus infections have shot up to 22, 961 after Public Health England admitted to missing 15,481 cases.
In last week's daily reports, thousands of cases were missed off the official statistics.
The body has said the wrong data was due to a "technical issue" which resulted in cases not being reported.
Cases from September 25 to October 2 were not included in the daily totals.
The current number of coronavirus cases in the UK now stands at half a million.
It has been reported 4,786 cases which were due to be reported on October 2 were not included in the daily total on the dashboard that day when the figure was given as 6,968.
Michael Brodie, the interim chief executive at Public Health England, said: "A technical issue was identified overnight on Friday 2 October in the data load process that transfers Covid-19 positive lab results into reporting dashboards.
"After rapid investigation, we have identified that 15,841 cases between 25 September and 2 October were not included in the reported daily Covid-19 cases. The majority of these cases occurred in most recent days.
UK 'panicked' into national lockdown after 'doomsday' warning of 1.5m deaths
"Every one of these cases received their Covid-19 test result as normal and all those who tested positive were advised to self-isolate.
"NHS Test and Trace and PHE have worked to quickly resolve the issue and transferred all outstanding cases immediately into the NHS Test and Trace contact tracing system and I would like to thank contact tracing and health protection colleagues for their additional efforts over the weekend.
"We fully understand the concern this may cause and further robust measures have been put in place as a result."
This comes as 12,872 cases were reported on Saturday, with officials questioning the sharp rise which is more than double the previous day.
Shadow health secretary Jonathan Ashworth said: "This is shambolic and people across the country will be understandably alarmed.
"Matt Hancock should come to the House of Commons on Monday to explain what on earth has happened, what impact it has had on our ability to contain this virus and what he plans to do to fix test and trace," reports The Sun.
Source: Read Full Article