Prince William and wife Kate Middleton on Tuesday welcomed a new prince, the fifth-in-line to Britain's throne, as the Duchess of Cambridge gave birth at a central London hospital. All pics/AFP

The baby boy is fifth-in-line to the British throne, behind his grandfather Prince Charles, father Prince William, brother Prince George, 4, and sister Princess Charlotte, 2

Members of the public gathered to have a look at Britain's Prince William, Duke of Cambridge and Britain's Catherine, Duchess of Cambridge show their newly-born son, their third child, to the media outside the Lindo Wing at St Mary's Hospital in central London

The boy was born at 11:01 am (1001 GMT) on Monday with William present for the birth

A notice has been placed on the forecourt of Buckingham Palace following the announcement of the birth of The Duke and Duchess of Cambridge's third child

The Duke and Duchess of Cambridge left the hospital around seven hours later, showing off their baby to the world's media and royal fanatics camped outside

William's 69-year-old father Charles, the heir to the throne, said he and his wife Camilla were thrilled to have a new addition to the family

Kensington Palace said the baby's name would be announced 'in due course'

The birth was also to be celebrated with a 41-gun salute in London's Hyde Park, while 62 rounds were fired near the Tower of London

Britain's Catherine, Duchess of Cambridge and Britain's Prince William, Duke of Cambridge depart the Lindo Wing at St Mary's Hospital in central London with their newly-born son