The Duke of Cambridge was bursting with pride, the Duchess clearly besotted. And the third Cambridge baby? Fast asleep, but seemingly secure of his new place in the world.

The newborn Prince signalled his arrival with three tiny fingers as he made his public debut , fast asleep in the arms of his mother.

And while his newborn son was oblivious to the excitement he had caused, the Duke embarked on his new life with three children with no illusions, joking his enlarged brood would give him “thrice worry now”.