Up to 100 ISIS fighters could be trying to sneak back into Britain top counter terror officer warns as he reveals 200 UK jihadis have been stripped of their passports

Two hundred British Islamic State fighters who have travelled to Iraq and Syria have been stripped of their passports, a terror chief disclosed today.

Deputy Assistant Commissioner Neil Basu said this left up to 100 IS fighters who are left in the war-ravaged region and could in theory attempt to return to Britain.

Why would a passport make any difference to a jihadist?