Johnson’s “minor” surgery took place early Monday, and Johnson is returning to Downing Street to recover, his spokesman said.
Johnson was placed under general anesthesia during the operation, and Deputy Prime Minister Dominique Raab is deputy.
The prime minister expects to chair his cabinet meeting on Tuesday, but his return to work will depend on how he feels, the spokesman added.
“My understanding is that there is a 24-hour period from the time of the operation … during which important decisions will probably be postponed to the first instance of the Deputy Prime Minister,” Johnson’s spokesman said, according to the PA.
“Now we do not expect anything from this to be required at the moment, but we have this opportunity,” they added.
The operation was planned in advance and was carried out by the National Health Service of Great Britain.
Johnson is expected to attend a meeting of British community leaders in Rwanda later this week, and his party is also facing two important local by-elections on Thursday.