Health Secretary Matt Hancock is self-isolating due to possible exposure to coronavirus.
Hancock, who contracted the virus in March 2020, said he was alerted by the UK’s NHS Covid-19 app.
In a tweet, Mr Hancock said he would be working from home until Sunday, adding “we all have a part to play in getting this virus under control”.
Hancock said the app informed him that he had been “in close contact with somebody who’s tested positive” and so self-isolating was “how we break the chains of transmission”.
“So you must follow these rules like I’m going to,” he said. “I’ve got to work from home for the next six days, and together, by doing this, by following this, and all the other panoply of rules that we’ve had to put in place, we can get through this and beat this virus.”