The Duke and Duchess of Cambridge were all smiles as they left a central London hospital with their newborn son, less than seven hours after his birth. Carrying the baby in a car seat, William and Kate smiled and waved to a crowd of well-wishers before driving off in a Land Rover. The child – the couple's third – was born at 11.01am at St Mary's in Paddington and weighed at 8lb 7oz (3.8kg)

Duchess of Cambridge gives birth to boy