On 7 November 2000, four men crashed into the Money Zone of the Millennium Dome in a JCB. Their target was a diamond worth L200 million. In 27 seconds they had broken through the security glass surrounding it - only then to find the gem had been switched for a fake and armed police were waiting in ambush. Gerry Northam uses Flying Squad surveillance video to report on what was potentially the most audacious robbery in history.
Producer Jonathan Jones