Judges at the Court of Appeal have refused to grant an appeal to the Somerset businessman convicted of selling fake bomb detectors.
James McCormick from Langport was convicted of fraud earlier this year at the Old Bailey.
It was claimed he had made £50million from a device which was based on a novelty golf ball finder.
Judge Elgan Edwards said McCormick had probably caused death and injury.
A conman from Somerset who sold fake bomb detectors to Iraq has lost a challenge against his 10 year jail sentence.
Three judges at the Court of Appeal in London rejected an application by 57 year old James McCormick of Langport.
His application for leave to appeal against the sentence was thrown out by Lord Justice Davis, Mr Justice Nicol and the Recorder of Chester, Judge Elgan Edwards.
McCormick is thought to have made £50million from selling three models based on a novelty golf ball finder to Iraq and other countries.
– Judge Elgan Edward
The circumstances were quite appalling. The applicant knew precisely what he was doing.
He did it for enormous profit and that conduct simply cannot and will not be tolerated.
McCormick, who until the end continued to maintain the detectors worked, is facing a confiscation hearing to recover millions of pounds.
He is believed to have sold 6,000 of his fake detectors to Iraq and 1,000 to other police and military forces including United Nations peacekeepers in Lebanon.
A businessman from Somerset jailed for selling fake bomb detectors has lost an appeal to have his sentence reduced.
James McCormick from Langport was sentenced to 10 years when he was convicted of fraud in May. He sold the devices to people across the world for up to £27,000.