On this occasion he secured inside help, obtaining the help of the managing director of the centre, Parvez Latif, a cocaine user, who was heavily in debt.
The thieves then hung a sign on the street-level door explaining that the Safe Deposit Centre was temporarily closed, whilst letting in further accomplices.
One hour after the robbers departed, the shift changed and the new staff discovered the crime and alerted the police.
While serving his sentence there, he forged a friendship with Dick Leach, a Flying Squad officer who led his arrest.
He was incarcerated in an open jail in Pescara, where he was allowed to live a lifestyle he was already accustomed to, as well as running a translation company.