About this programme

With the Olympic Games only a year away, Sophie Raworth and Jake Humphrey report live from Trafalgar Square as Mayor of London Boris Johnson hosts a ceremony to mark the start of the countdown, during which the new design for the medals will be revealed. Mishal Husain is at the Aquatics Centre in the Olympic Park, where world 10m diving champion and Olympic hopeful Tom Daley performs the official launch dive into the Olympic Pool.