The men were arrested in the city in February.
Two men have been sentenced to 14 years in prison after being convicted of conspiracy to supply nearly half a million pounds worth of heroin into Gloucester.
The jury at Gloucester Crown Court delivered a unanimous guilty verdict today (August 6) against Mohammed Majid, 30, from Oliver Road in Milton Keynes, who has been sentenced to nine years.
Kasim Atcha, 47, from Wellington Street in Gloucester pleaded guilty last Thursday and was sentenced alongside Majid today to five years.
Both were arrested by officers from the South West Regional Organised Crime Unit (SW ROCU) in February.
The court heard how SW ROCU officers watched Majid drive his hire car into Frampton Road in Gloucester in the early hours of Saturday February 24. After a few minutes, Atcha arrived and got into the car. The team then struck and, despite Majid attempting to drive away and injuring an officer in the process, both men were arrested.
Inside the car boot was a large black bin liner containing ten compressed blocks of heroin weighing a total of 5kg and with a street value of around £482,000.
Detective Inspector Paul Catton from the SW ROCU said: “This was clearly a significant haul of drugs that had brought into the area and was destined for sale on the streets of Gloucester.
“The success of the operation was down to a quick and effective response from my team, acting on information and clearly determined to stop the men despite their attempts to get away.”
Gloucestershire Constabulary Chief Inspector for Intelligence, Neil Smith said: “This was a brilliant result from our SW ROCU colleagues, who we work and liaise with on a regular basis.
“The constabulary’s work clamping down on class A drugs supply is significant and ongoing, and combined with the work of the regional team we’re hoping to show these dangerous offenders there really is no place for them in Gloucestershire.”