The number of children sired by Johnson has been a talking point in British politics for many years, after an English court discharged an injunction banning news organizations from reporting the existence of a daughter as the result of an extra-marital affair.
Johnson has four children with his ex-wife Marina Wheeler, one daughter from the affair, and a son with his wife Carrie Johnson, who he married earlier this year.
Johnson told NBC it was “fantastic” having a baby in 10 Downing Street, but that it was also “a lot of work.”
“But I absolutely love it,” he added. “I change a lot of nappies.”
In August, Carrie Johnson announced on Instagram that the couple were expecting a second child and revealed she had suffered a miscarriage earlier in the year.
The couple’s son, Wilfred, was born in April 2020, shortly after Mr Johnson had been hospitalized with Covid-19 symptoms so severe that he was admitted to an intensive care unit.
Wilfred, the couple have since said, was given the middle name of Nicholas in tribute to the doctors that the Prime Minister said had saved his life following his Covid-19 illness.
It’s unclear why Johnson decided now to confirm the existence of a child he has avoided talking about.