Watch: What are the new Covid-19 measures for pubs?
Pubs in England will be forced to close by 10pm from Thursday, Boris Johnson is set to announce.
The prime minister will outline the new curfew, which will also affect bars and restaurants, in a speech on Tuesday evening.
As well as the early closing, establishments will be restricted by law to table service only in an effort to halt the spread of coronavirus.
The new curfew comes after the UK’s COVID-19 alert level was raised to 4, meaning transmission is "high or rising exponentially".
On Monday, the government’s chief scientific adviser, Sir Patrick Vallance, said the number of new daily cases will reach 50,000 by mid-October if no action is taken.
This would, in turn, lead to 200 new daily deaths a month later in mid-November, he said.