Boris Johnson had a "very minor routine operation related to his sinuses" at a London hospital on Monday morning, Downing Street has confirmed.
The Prime Minister's official spokesperson said: "He went to hospital around 6am and the operation was carried out first thing this morning. He was back in Downing Street shortly after 10am."
Asked how the Prime Minister was feeling, the spokesman said he had not spoken to him since his return to Downing Street but that he was resting at home.