Cocaine with a street value of £232m was discovered hidden in a large shipment of bananas from South America.
The 2.9-tonne (2,900kg) haul was smuggled into London Gateway Port in Thurrock, Essex, on Thursday.
Border Force intercepted the cocaine at the port and removed it from a trailer, before the drugs courier took the empty load to an address near Buntingford, Hertfordshire.
Nine men allegedly connected to the bust were then arrested and later released on bail.
Border Force had been tipped off about the illegal consignment by the National Crime Agency.