The Duke and Duchess of Cambridge have introduced their baby boy to the world, standing proudly on the steps of the Lindo Wing with their son.

The royal infant, wrapped up against the cool Spring weather, nestled in the arms of his mother as the couple posed for pictures.

Kate looked in good health after giving birth this morning to her as yet un-named prince, who is fifth in line to the throne.

Albert, Arthur and Philip are all thought to be in the running for the name of the new royal baby.

The Duchess of Cambridge gave birth to her third child - her second son - at 11.10am on Monday morning.

First pictures of new royal baby as Duke and Duchess leave hospital