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Summary

  1. The baby boy was born at 11:01 BST, weighing 8lbs 7oz
  2. Mother and baby are "doing well", Kensington Palace says
  3. Prince William was present for the birth at the Lindo Wing of St Mary's Hospital, London
  4. The new baby is fifth in line to the throne
  5. His older brother Prince George and sister Princess Charlotte have visited him in hospital
  6. The baby's name is yet to be announced...

Live Reporting

By Duncan Leatherdale, Lucy Webster and Katie Wright

All times stated are UK

'William to focus on family'

The Duke and Duchess of Cambridge with their baby son
PA

And finally, Kensington Palace says Prince William will be concentrating on his family for the next couple of weeks.

His son's name has not yet been announced, but when asked, the duke said: "You'll find out soon enough."

That's all for today.

Look back on a day the Royal Family got a new prince.

Sharing a birthday with a prince

The Duke and Duchess of Cambridge aren't the only ones welcoming a new baby today.

Read the stories of Louis, Shaan and Isabell.

Babies Louis, Isabell and Shaan
Jessica, Steph and Jas

Couple thank well-wishers

A statement from Kensington Palace said: "Their Royal Highnesses would like to thank all staff at the hospital for the care and treatment they have received.

"They would also like to thank everyone for their warm wishes."

New prince introduced to the world

Here's one of the first close-up pictures of the new prince, cradled by a beaming Duchess of Cambridge.

The new prince cradled by a beaming Catherine
PA

Royals leave hospital with baby son

After that first appearance in the Duchess's arms, the new prince re-emerged in a car seat and the family is now on their way home to Kensington Palace.

As they left, Prince William said they were "very happy".

Duke and Duchess with the new baby
BBC

Welcome to the world...

And here's the moment when the new addition to the royal family made his first public appearance.

Duke and Duchess of Camrbdieg with third child
BBC

First glimpse of the new prince.

The Duke and Duchess have introduced their baby boy to the world as they emerged onto the steps of the hospital's Lindo Wing.

The couple waved to the media and paused on the steps for photographs as crowds cheered.

George and Charlotte back home

The Palace added: "Prince George and Princess Charlotte have now returned to Kensington Palace.

"Their Royal Highnesses would like to thank all staff at the hospital for the care and treatment they have received.

"They would also like to thank everyone for their warm wishes."

Kate will leave hospital this evening

Kensington Palace has announced that the Duke and Duchess will leave hospital this evening and return home with their new son.

While we wait for the family to reappear...

Could the royal baby boost the economy?

Views are mixed. But one firm is so confident it's willing to put a figure on it.

Independent brand valuation and strategy consultancy Brand Finance estimates the boy will add £50m to the UK economy before he reaches his first birthday.

Chief executive David Haigh says: "The birth of the new prince is also a tremendous marketing opportunity for British producers and retailers of baby products who can reference the royal baby in their promotional campaigns."

Read more.

George and Charlotte arrive to meet baby brother

Prince George, Prince William and Princess Charlotte
BBC

Prince William has returned with his older children, having successfully got them out of Kensington Palace and into the car.

Prince George, four, made the same journey when Princess Charlotte was born just under three years ago. At the time many joked about Prince William's ability to buckle his son into a car seat.

Charlotte waved to the crowd and waiting media as the family disappeared behind the famous door of the Lindo Wing to meet their baby brother.

World's media wait for first glimpse of royal baby

Historian Professor Kate Williams has just about squeezed in alongside the photographers and cameramen from across the globe, waiting with baited breath to get a glimpse of the new fifth in line to the throne.

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Congratulations from Scottish First Minister

Duke of Cambridge: 'Back in a minute'

Prince William will be back at the hospital soon...

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Prince William leaves the hospital

Prince William leaving Lindo Wing
BBC

Prince William has left the Lindo Wing to pick up his two older children and bring them to meet their new baby brother.

"Back in a minute!" he said to the waiting media.

Prince George, four, has been at school as normal today, with two-year old Princess Charlotte spending the day at home.

It is unclear whether we will see the whole family together, but the older children's arrival will echo scenes from Princess Charlotte's birth, when the Duke left the hospital and returned with Prince George, who gave the crowd a shy wave.

'All the very best' to Duke and Duchess from Labour leader

'Renewed interest' in royals

By Jonny Dymond, BBC royal correspondent

Reporters waiting for baby news
AFP

After some quieter times, the Royal Family is back in the news - and there is is a noticeable sense of renewal; new faces, with Meghan Markle, Prince Harry's fiancee, making her first public appearances, and now another child, the as-yet unnamed third child of Duke and Duchess of Cambridge.

It's always gone like this - waves of interest followed by periods of relative quiet. But there has been a sense of renewal in the past few months.

Of course there has been concern over the health of the Duke of Edinburgh, and interest in the Queen, with her decades of service, never falters.

But the attention of a new group, both in Britain and around the world, has been caught by this birth and then next month the wedding of Prince Harry and Ms Markle.

From the darkest days of the World War Two to the Instagram generation, the Royal Family now connects them all.

Thousands 'like' baby announcement tweet

More than 93,000 people have "liked" Kensington Palace's tweet announcing the birth of the new prince.

A further 32,000 have retweeted it as the #Royal baby has been trending on Twitter.

Almost 3,000 have replied to the tweet with the majority offering congratulations

View more on twitter

Crowds gather at Buckingham Palace

Crowds have been gathering at Buckingham Palace to take photos of the formal notice announcing the birth of the royal baby.

Crowds at Buckingham Palace
PA

How the Evening Standard will report baby news

Westminster Abbey to mark birth with bells

The bell ringers at Westminster Abbey will play Cambridge Surprise Royal at 13:00 BST tomorrow to celebrate the birth of the new prince.

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Church of England offers royal baby prayer

Flags raised to welcome third Cambridge child

Flags have been raised at Buckingham Palace and Windsor Castle to celebrate the birth of the third child of the Duke and Duchess of Cambridge.

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University welcomes graduates' third child

The University of St Andrews has offered its congratulations to its two former students after the birth of their third child.

The Duke and Duchess of Cambridge met while studying at the university on the east coast of Scotland.

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‘Where’s Simon McCoy?’

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Some people had their fingers crossed that BBC newsreader Simon McCoy would be the one to announce the arrival of the new royal baby on air.

In October, he announced the baby’s due date with a characteristically dry delivery:

"Now, bearing in mind that they announced that she was pregnant back in September and it was thought that she was around two or three months pregnant, I’m not sure how much news this really is."

He added: "But anyway it’s April so clear your diaries, get the time booked off because that’s what I’m doing."

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But the official announcement came just after 13:00 BST - an hour before Simon McCoy went on air.

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Paddington welcomes baby prince

Have you had a baby today?

The BBC wants to hear from anyone else who has had a baby today:

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More politicians send best wishes

Figures from across the political spectrum continue to congratulate the Duke and Duchess.

Speaker John Bercow told the Commons: "I am sure the whole House would want to join me in sending Their Royal Highnesses, the Duke and Duchess of Cambridge, our warmest congratulations on the birth of their son."

Liberal Democrat leader Sir Vince Cable tweeted: "Congratulations to the Duke and Duchess of Cambridge on the birth of their son. I'm sure his older brother will be delighted he has been born on St George's Day! Best wishes to them all and Princess Charlotte."

The Speaker has sent the House's "warmest congratulations" to the Duke and Duchess of Cambridge on the birth of the… twitter.com/i/web/status/9…

Celebrities send best wishes

Celebrities have been sending their congratulations to the Duke and Duchess of Cambridge.

TV presenter Paddy McGuinness, former world heavyweight champion boxer Frank Bruno and Hollywood actress Mia Farrow were among the celebrity well-wishers on social media.

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While comedian David Walliams joked about the baby name announcement...

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See the notice go up at Buckingham Palace

Two members of the royal household staff - footman Heather McDonald and senior footman Olivia Smith - putting the official birth notice up outside Buckingham Palace:

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Official birth notice outside Buckingham Palace

Royal baby announcement outside Buckingham Palace
BBC

A notice bearing the news of the birth of the new prince has been placed outside Buckingham Palace according with tradition.

The framed notice was brought out of the Privy Purse Door and placed on an easel in the forecourt where it will remain for about 24 hours.

Notice placed
Stefan Rousseau/PA Wire

The practice of posting a bulletin announcing a royal birth has gone on for at least as long as Buckingham Palace has been the sovereign's official residence - since 1837.

After it comes down, the notice will be sent to the Privy Council Office so it can be kept in their records.

The weight is over

The new baby Prince of Cambridge weighed 8lb 7oz - heavier than both Prince George and Princess Charlotte.

Charlotte, at 8lb 3oz, weighed slightly less than George's 8lb 6oz - but was still above the average weight of a baby in the UK which is about 7lb 7oz (3.5 kg).

Baby scales
BBC

But the new prince is not the heaviest royal baby in recent years. That title falls to Savannah Phillips - the daughter of the Queen's grandson Peter Phillips - who weighed 8lb 8oz in 2010.

George was the heaviest future king to be born in recent history. Prince William weighed 7lb 1.5oz in 1982, while Prince Charles weighed 7lb 6oz in 1948. Prince Harry weighed 6lb 14oz in 1984.

The Queen - then Princess Elizabeth - was born by caesarean section in her maternal grandparents' London home and was also third in line to the throne at the time, but her weight was not announced, as was previously the custom for royal babies.

Archbishop of Canterbury congratulates couple

Justin Welby tweets...

Royal baby announcements through the years

Announcing royal babies through the years

What's it like to be third?

There will be many things that set the new royal baby's life apart from others, but something the prince will have in common with lots of us is siblings.

Linda Blair, a clinical psychologist and Daily Telegraph columnist, said third-borns often have certain personality traits.

"You get wiser parents with each kid. So third-borns grow up with more relaxed boundaries. These are the children most likely to be creative and risk-takers. They can try anything. That third kid has lots of people to look up to," she said.

Read more.

Who helped deliver the baby?

The team that looked after the Duchess of Cambridge during the birth of her third child was led by Guy Thorpe-Beeston, surgeon gynaecologist to the royal household, and consultant gynaecologist Alan Farthing, surgeon gynaecologist to the Queen.

The pair (pictured left and right below) were both involved with the birth of Prince George in 2013.

Three surgeons
PA WIRE

Dr Sunit Godambe, a consultant neonatologist at Imperial College NHS Trust, which runs St Mary's hospital, was also part of the group that cared for the duchess during her previous two births alongside Mr Farthing and Mr Thorpe-Beeston.

Professor Huw Thomas, physician to the Queen and head of the medical household, completed the team.

He was also involved with the birth of Princess Charlotte.

Timeline of the prince's birthday

Before 06:00: The Duchess of Cambridge is driven to the Lindo Wing of St Mary's Hospital, Paddington, London, accompanied by the Duke of Cambridge.

08:24: Kensington Palace confirms Kate has been admitted to hospital in the early stages of labour.

11.01: Kate gives birth to a baby son.

13:02: Kensington Palace announces the birth of the prince and reveals the baby weighs 8lb 7oz (3.8kg).

What's in a name?

Speculation is growing about what the new prince might be called.

With Arthur, Albert and Philip among the current bookies' favourites for a boy, it appears the public expect the royal couple to opt for a traditional name, rather than something more left-field.

But experts say there is a chance the ultimate name choice might also reflect the Middleton side of the family.

For their first two children, the duke and duchess chose traditional options, seen as a tribute to previous members of the Royal Family.

William and Kate
Reuters