How an iPad under the Thames solved museum thieves' murder plot

Three men found guilty at Old Bailey of near-assassination of Paul Allen .

Allen was one of the ringleaders of what remains Britain 's biggest ever armed robbery.

In 2006 , Allen was part of a balaclava-wearing gang toting guns including an AK-47 assault rifle who threatened to kill staff at the Securitas depot in Tonbridge , Kent .

Allen fled to Morocco four days later , but was arrested in Rabat alongside friend and fellow robber Lee Murray , who remains in jail.

Six bullet casings fired from a Glock self-loading handgun were found at the Woodford shooting scene.

DNA samples from the fence were found to most probably belong to Louis and Kelly Ahearnes .

Two days prior, Kelly and Louis had been driven by Stewart in the same Renault Captur to Ide Hill Hall, a 16th Century mansion converted into luxury apartments in Sevenoaks, Kent .

The three men were later convicted at Maidstone Crown Court of burglary and the attempted burglary of another apartment.

They were each found guilty on Monday of conspiracy to murder and will be sentenced on 25 April . But Det Ch Insp Webb suggests these verdicts are far from being the end of their deep investigations. "It is one of those cases where you keep scratching and you keep finding," he adds..