The drugs had an estimated street value of £675,000.
Border Force officers stopped a Romanian-registered lorry at the Eastern Docks on 5 October 2013. After questioning the driver, Ioan Ionce, officers searched the lorry and its load of stonework for delivery to Sundridge in Kent.
Ionce was arrested and the investigation passed to the National Crime Agency.
Ionce pleaded guilty at a hearing at Canterbury Crown Court on Monday (20 January 2014) and was sentenced to seven years imprisonment.
