In 2000, a planned diamond heist aimed to steal over 500 million dollars worth of De Beers jewels. The scheme involved a daring attack on London's Millennium Dome, using an excavator and speedboat for the escape. The operation was foiled by police before it could succeed. One of the would-be robbers shares detailed insights into the meticulous planning, the gang dynamics, surveillance, and security measures. His story highlights the complexity of the attempted heist and its ultimate failure.