The Duchess of Cambridge gave birth to her son at St Mary’s Hospital in London. Weighing 3.8 kilos the name of William and Kate’s son has yet to be announced. Prince William’s press secretary Ed Perkins emerged from the Lindo wing in the early evening carrying the announcement which he passed to a blue Jaguar car which took off for the royal residence in London. The formal announcement has arrived at Buckingham Palace where crowds are beginning to gather outside the gates.