Australian prime minister Scott Morrison and Japanese prime minister Shinzo Abe were among the first international leaders to offer their congratulations.

A spokeswoman for the PM and his partner said both mother and baby are "doing very well".

a happy 100th birthday to Captain Tom Moore A spokeswoman for the PM and his partner said both mother and baby are "doing very well". It is understood Mr Johnson, who has just recovered from coronavirus, was present throughout the birth, at an NHS hospital in London.

Whatever their political differences, he said at Prime Minister's Questions, "as human beings I think we all recognise the anxiety that the prime minister and Carrie must have gone through in these past few weeks - unimaginable anxiety. Labour leader Sir Keir Starmer also offered his congratulations on the "wonderful news".

The four children from Mr Johnson's second marriage, to barrister Marina Wheeler, are in their 20s. She later sent Mr Johnson baby scans and daily messages while he was in hospital, to keep his morale up. They are the first unmarried couple to move into Downing Street together. But his place was taken Foreign Secretary Dominic Raab, who has been deputising for him. Prime Minister Boris Johnson and his fiancee Carrie Symonds have announced the birth of a son. Mr Johnson, 55, and Ms Symonds, 32, announced in March that they were expecting a baby in "early summer", and that they had become engaged at the end of last year. He also paid tribute to the key workers who have lost their lives fighting coronavirus and wished

The new arrival is the third baby born to a serving prime minister in recent history.

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And wishing health and happiness to the wee one.". There was speculation that Mr Johnson would take part in his first Prime Minister's Questions since recovering from coronavirus on Wednesday. He was reported to have reached a divorce settlement with Ms Wheeler in February.

Mr Raab said: "I'm sure the whole House will want to join with me in sending congratulations and our very best wishes to them.". He is expected to take a "short period" of paternity leave at some point later this year, Downing Street said. The family are planning to continue living in the flat above Number 11 Downing Street and it's understood their dog, Dilyn, will also be remaining in residence.
Ms Symonds also suffered symptoms of the disease.

Prime Minister Boris Johnson and his fiancee Carrie Symonds have announced the birth of a son. The PM's weekly audience with the the Queen is due to take place later by telephone. "The PM and Ms Symonds would like to thank the fantastic NHS maternity team," Downing Street said. Tony Blair's wife Cherie gave birth to son Leo in May 2000, three years after her husband's first election victory, and David Cameron and wife Samantha welcomed daughter Florence in 2010.

The couple have received messages of congratulation from across the political spectrum, and Mr Johnson's father Stanley said he was "absolutely delighted" and "thrilled" by the birth of his grandson. "I really hope that this brings them incredible relief and joy.". who has raised over £29m for the NHS. Downing Street declined to say whether the baby was born prematurely, and did not provide details of the weight, timing, nature or location of the birth. The BBC is not responsible for the content of external sites. The Queen has sent a private message of good wishes to the couple to congratulate them on the birth of their son, Buckingham Palace said. Mr Johnson's Conservative colleagues have also been congratulating the couple on social media, with Health Secretary Matt Hancock saying: "So thrilled for Boris and Carrie.
The baby is Ms Symonds' first child, while Mr Johnson is known to have fathered five. Wonderful to have a moment of unalloyed joy!". But he has now returned to work in Downing Street, No 10 said, where he is leading the response to the pandemic.

Mr Johnson returned to work on Monday, after a battle with coronavirus which saw him spend three nights in intensive care.

", Scottish First Minister Nicola Sturgeon tweeted: "Some good news - sending congratulations to Carrie and the PM. Ms Symonds said on social media that she had spent a "worrying" week in bed with the symptoms of the virus while the PM was self-isolating with the the disease.