The jihadist who beheaded the American journalist James Foley is believed to be British born militant from London who calls himself John, it can be revealed. Intelligence agents in the UK and United States are urgently looking into reports that the Islamic State in Iraq and the Levant (Isil) fighter, whose brutal actions shocked the world, is the ringleader of group of British jihadists who have specialised in hostage taking. Based in the Isil stronghold of Raqqa in Syria, ‘John’, is described as a well-educated, intelligent, but highly committed member of the extremist terror group.