Prince Philip's chest pain 'a significant medical scare'

The Duke of Edinburgh's treatment for a blocked coronary artery is "a significant health scare", according to the BBC's royal correspondent.

The Queen has arrived at Papsworth Hospital in Cambridgeshire, where Prince Philip was taken on Friday after suffering heart pains.

Nicholas Witchell explains that the Royal Family are "normally pretty dismissive of medical conditions", and that the Queen did not visit her husband when he spent three nights in hospital in 2008 with a chest infection.