A serving officer with Britain's Border Force was among a total of 12 people arrested by police in Britain and France targeting a gang suspected of importing drugs and firearms, reports The Telegraph.
The 36-year-old from Dover was detained by French police near the port of Calais along with three other British nationals.
Eleven firearms, including nine handguns and two revolvers, were recovered, along with ammunition.
French officers also seized 34 kilos of cocaine, and seven kilos of heroin.
Shortly afterwards, eight men were arrested in Kent by detectives from the Metropolitan Police Organised Crime Command.
Six men have been charged with conspiracy to import firearms and class A drugs, and remanded in custody.
They are due before ahead of appearances at Barkingside Magistrates Court on October 9th. The remaining two men were released under investigation.
Officers from the National Crime Agency’s Anti-Corruption Unit have also carried out searches at two locations in Folkestone and Dover as part of the operation.
The investigation has been conducted by the NCA and Metropolitan Police Service, working in partnership with the Central Office for the Repression of Organised Crime of the French National Police (OCLCO), and the UK Home Office.
Dave Hucker, head of the NCA’s Anti-Corruption Unit, said: “This operation has brought together law enforcement from both sides of the Channel, and we believe we have prevented the importation of a significant quantity of class A drugs and firearms to the UK. Our investigation is ongoing, both in the UK and in France.”