– The Prince of Wales
Both my wife and I are overjoyed at the arrival of my first grandchild. It is an incredibly special moment for William and Catherine and we are so thrilled for them on the birth of their baby boy.
Grandparenthood is a unique moment in anyone’s life, as countless kind people have told me in recent months, so I am enormously proud and happy to be a grandfather for the first time and we are eagerly looking forward to seeing the baby in the near future.
Prince William's close friend, British oarsman Oliver Hicks, has welcomed the "great and happy news" of the arrival of his son.
A statement said: 'What great and happy news to hear the baby has arrived safe and well and Kate's well too. My thoughts are with them all on this momentous day.
"I wish them all good fortune for the future. I'm delighted to be back from the sea to hear the news!."
The Queen has returned to Buckingham Palace as the world waits for the birth of the Duke and Duchess of Cambridge's first child.
Prince Charles looked perplexed when a bystander shouted "congratulations" to him during a visit to York Minster.
Charles appeared to say "Who? Me?" before chuckling as the woman explained the greetings were for the "imminent arrival".
As the Prince walked over to her, he joked, "Do you know something I don't?"
A look at how the impending arrival of the Duke and Duchess of Cambridge's baby is being covered around the world.
The front page of the Guardian website features a "Republican" switch which turns off all royal baby coverage.
Australia's Courier-Mail website leads with the headline "Royal baby is on the way".
- The baby will be the Duke and Duchess of Cambridge's first child
- William and Kate will have been married for two years when the baby is born
- He or she will be third in line to the throne and the Queen's third great-grandchild
- Prince Harry will be bumped down to fourth in line to the throne
- The baby will one day be head of state of 16 countries
- William and Kate will both be 31 when the baby is born
- Royal births are celebrated with a 41-gun salute
- If the baby follows the Prince of Wales and William on to the throne, he or she will be the 43rd monarch since William the Conqueror in 1066
- It costs £6,265 for a one night stay and delivery package at the private Lindo wing including a suite of two rooms, but this excludes consultant's fees
- The Duchy of Cornwall landed estate - which will privately fund the baby's future as an heir apparent - has a yearly income of £18.3 million.
The arrival of the Duke and Duchess of Cambridge's firstborn will be announced by the age-old custom of placing a proclamation of royal birth behind the iron railings of Buckingham Palace.
The notice will begin its journey at the Lindo wing of St Mary's Hospital in Paddington, London, where Kate's baby is being delivered.
The brief bulletin, on headed Palace notepaper, confirms the sex of the baby but usually gives little else away other than that the baby has been "safely delivered" and perhaps the weight.
It used to be hand-written but is now mostly typed and will be signed by the Queen's former gynaecologist Marcus Setchell, who is leading the medical team looking after the Duchess.
Placed in a foolscap-sized dark wooden frame, it will be set on an ornate easel behind the railings, just to the side of the front gates of the Queen's London home for members of the public to read.
But the notice will not be put in place until the monarch and senior members of the Royal Family have been told of the new addition to their family.
Prince Charles was given a gift for the upcoming addition to the royal family during his visit to York.
As he accepted the gift, Charles said the baby "hasn't quite appeared yet".
Alex Dickinson said her son Freddie "thinks [the baby] is going to appear in six hours time", to which the Prince replied, "You might be right".