Prime Minister Boris Johnson and his financee Carrie Symonds have announced the birth of a "healthy baby boy at a London hospital earlier this morning".
Both mother and baby are doing very well, their spokesman said.
The couple announced at the end of February that Ms Symonds was pregnant and they had got engaged.
Mr Johnson only returned to work on Monday after spending time intensive care during his battle with coronavirus.
(c) Sky News 2020: Boris Johnson and Carrie Symonds announce birth of baby boy