Watch: The moment Kate and William reveal their new baby boy to the world outside London's exclusive St Mary's Hospital

Kate Middleton has given birth to a healthy baby boy in the Lindo wing of London's exclusive St Mary's Hospital today with Prince William by her side.

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The baby was delivered about 10pm last night, New Zealand time.

Royal officials say the baby weighed in at eight pounds, seven ounces (3.8 kilograms).

Her Royal Highness and child are both reportedly doing well.

The new arrival is the Duchess of Cambridge and Prince William's third baby, joining brother George aged four and sister Charlotte aged two.

The royal couple have not announced the baby's name yet but people are placing bets on what it could be.

1 NEWS' Europe Correspondent Joy Reid says the most popular names are Albert and Arthur.

The news comes amidst a busy couple of months for the royal family with Prince Harry and Meghan Markle to be wed on May 20.

A few hours after the birth the Duchess of Cambridge and Prince William hospital and are headed home with their newborn son.

The duchess, emerged from St. Mary's Hospital about seven hours later alongside her husband, holding the baby wrapped in a white blanket.

The trio posed for photographers before going back inside.

The royals emerged a few minutes later with their infant in a carrier and got into a waiting car.

The newborn prince's elder siblings, Prince George and Princess Charlotte, already had gone home after a brief first meeting with their baby brother.

The prince, whose name has not been released, is fifth in line to the British throne.

Driver asleep at the wheel lucky to escape serious injury as 4WD ploughs into roadside trees

A teenage driver in Australia who fell asleep at the wheel was lucky to escape serious injury when his vehicle crashed into trees.

The rear dash camera of a nurse driving home from work, in front of the 19-year-old, captured the horrifying incident southeast of Brisbane yesterday afternoon.

The footage, posted on the Facebook page of Dash Cam Owners Australia, shows the 4WD driver veer onto the shoulder of the road and into a tree-covered embankment.

In the post, the husband of the nurse says the driver fell asleep at the wheel.

"Beenleigh-Redland Bat Road, Cornubia. Fell asleep at the wheel, wife is a emergency nurse and checked him out straight away," he wrote. 

The man told Yahoo7 News his wife saw the car disappear into the bushland and rushed to his aid.

"He'd been up all night and then went fishing for the day," he said.

 "It could have been so much worse … he was running on adrenaline but didn't appear too injured."

A spokesperson for Queensland Ambulance said they assessed the driver and he didn't appear to be injured and didn't require treatment or transport.


As we wait for the Royal baby to arrive, take a look at how we celebrated George and Charlotte

Royal watchers are on tenterhooks as they wait for the arrive of Princess Kate and Prince William's third child, now the Duchess has gone into labour.

It comes following the birth of George in 2013, and Charlotte two years later.

Here is how we have celebrated their births and first few years. 

Kensington Palace has released a photograph of Prince George with his father Prince William ahead of the baby’s second birthday. Source: Associated Press

The prince joined members of the Royal Family on the balcony of Buckingham Palace to witness a flypast marking the Queen's birthday. Source: BBC

Prince William arrives at the hospital with Prince George to see the family's new addition. Source: Associated Press

The royal couple will spend a few weeks at their mansion in Norfolk with their children. Source: 1 NEWS

Three-day-old Princess Charlotte Elizabeth Diana meets her great-grandmother for the first time. Source: 1 NEWS

The pictures show the little princess being cradled by her big brother. Source: 1 NEWS

A petting zoo and entertainers were brought in for the siblings while on a royal tour in Canada with their parents. Source: Breakfast