The UK has reported 35,383 more daily COVID-19 cases and an additional 532 deaths.
That's a rise of 10,222 infections on the previous day; however, Thursday's numbers also include a backlog of around 11,000 cases that hadn't been reported earlier due to a technical delay in Wales.
Maintenance work was carried out on Public Health Wales' computer systems at the end of last week, meaning the daily infection count missed official figures between 9 and 15 December.
A total of 1,948,660 people have now tested positive for the disease in the UK.
The 532 deaths recorded in the latest 24-hour period marks a fall of 80 from the 612 deaths reported on Wednesday.
A total of 66,052 people have died within 28 days of testing positive for COVID-19.
With just over a week to go until Christmas Day, infections have continued to rise in many parts of the UK.
Two-thirds of England's population are now under the toughest Tier 3 measures, with large swathes of the South East being moved into Tier 3 on Saturday.
Meanwhile, Wales has reduced the number of households allowed to meet at Christmas to two.
People across the UK are being urged to keep their festive gatherings to a minimum this year to avoid spreading coronavirus between loved ones.
In a joint statement on Wednesday night, the four nations warned that a "smaller Christmas is a safer Christmas, and a shorter Christmas is a safer Christmas".
The latest numbers also come amid reports of several health trusts being forced to divert routine procedures elsewhere due to high numbers of COVID-19 patients.
Barts Health NHS Trust, which serves around 2.5 million people in east London, said the deferrals were being made due to "high pressure" on its winter plan, while Mid and South Essex NHS Trust said it was also postponing some non-urgent operations.
In parts of South Wales, all non-urgent surgery, outpatient clinics and specialist nurse services are on hold.