More than 850 people have left the UK to join Isis in Iraq and Syria, with half having since returned
A report from Europol revealed that of hundreds of Britons who travelled to Syria and Iraq amid the rise of Isil, nearly half have been able to return safely.
It comes amid widespread concern at the low number of returning fighters and so-called jihadi brides successfully prosecuted in British courts.
According to the annual Europol report, roughly 45% of Britons who travelled to Syria and Iraq have already come back to their home country.
The country with the next highest proportion was Germany, where 33% have returned, while in the Netherlands and Spain the return rate is thought to be just 18%.
The report warned that returning jihadis and their supporters pose a serious ongoing threat to national security.
Comment: Just don't say anything offensive about the returning jihadis on Twitter - you may get a visit by the police for hate speech.