UK Prime Minister Boris Johnson becomes father of a baby boy

British Prime Minister Boris Johnson's partner Carrie Symonds on Wednesday gave birth to a "healthy baby boy" in a London hospital, a spokesman for the couple said.

"Both mother and baby are doing very well," the spokesman said in a surprise announcement, as Symonds was not thought to be due until later in the year.

"The prime minister and Ms Symonds would like to thank the fantastic NHS (state-run National Health Service) maternity team."

The announcement explains why Downing Street officials were reluctant to confirm that Johnson would appear at his weekly question and answer session with members of parliament.

Foreign Secretary Dominic Raab, who deputised for him during his illness, is expected to take his place later on Wednesday.

This positive development in Johnson's personal life comes just days after he returned to 10 Downing Street after recuperating from coronavirus.

Symonds had moved out of their Downing Street flat before he became ill, but later reported having symptoms of coronavirus herself. She recovered at home.

After being treated at a hospital in London, he was sent to Chequers, the official retreat of the UK Prime Minister, for a full recovery on April 13, where he was joined by Carrie.

Chequers is a sprawling 1,000-acre estate in Buckinghamshire, south-east England.