A gang of four robbers who stole almost £100,000 from cash vans in London have been jailed for a total of 25 years.
The criminals carried out three raids on Abbey branches and attempted two more between October and December 2009.
Ringleader Steven Fung, 42, of West Ealing, west London, was convicted of conspiracy to rob by an Old Bailey jury and jailed for 12 years.
Three other gang members admitted the offences and were sentenced to shorter custodial terms.
Aziz Dohfi, 30, of Walthamstow, Trevor Hawthorne, 21, and Kevin Arias-Rodrigues, 20, both of Kennington, were jailed for seven, five and three years respectively.
The robbers struck during nighttime as vans delivered money to branches in west London and the City.
The cash was then given in a briefcase to a smartly-dressed man who escaped by Tube while posing as a businessman.
CCTV shown in court showed Dohfi escaping after one of the robberies.
Judge Recorder Oliver Sells QC said: "This was without doubt a serious, organised campaign of robbery.
"Those delivering the cash were particularly vulnerable late at night on empty streets as they were performing their service to the public."
Det Insp Glyn Whittick, of City of London police, said: "Today's sentencing shows how modern policing techniques are being used to bring violent criminals to justice.
"This gang were ruthlessly efficient and careful not to leave any forensic trace behind, but through our hi-tech investigation we were able to place them at the scene of the crime, and ultimately secure this conviction."