Ronald "Ronnie" Biggs became the most infamous member of the gang that committed the Great Train Robbery - one of the most notorious robberies in British criminal history.
In August 1963, a gang held up the Royal Mail travelling post office that ran between Glasgow and London, stealing £2.6 million (equivalent to around £40 million today).
Biggs was sentenced to 30 years in prison for his part in the heist. But he managed to escape from Wandsworth Prison after just 15 months by climbing a 25 foot wall and jumping onto a mattress in a furniture van.
He then fled to Brazil, where he lived for 30 years.
Biggs found himself back behind bars when he agreed to voluntarily return to Britain in 2001.
Suffering from pneumonia, Biggs was released from prison in 2009 on compassionate grounds.
Great Train Robber Ronnie Biggs has died aged 84, his spokeswoman said.