Three men were found guilty on Thursday in the largest burglary in English legal history, a daring multimillion pound raid on a safe-deposit business in London's jewelry district led by pensioners who had spent a life in crime.

In a plot three years in the planning, the gang broke into the vault of the Hatton Garden Safety Deposit building during the long Easter holiday weekend last year.

They entered an elevator shaft and climbed down to the vault where they used heavy equipment to drill through a thick concrete wall. Initially thwarted, they returned the following day and ransacked 73 deposit boxes, stealing jewels, gold and cash worth 14 million pounds ($20 million).