His style was that of a celebrity lecturer, spreading "enlightenment" in a rich baritone with the help of jokes and references to pop stars as he addressed rapt audiences the length of Britain. News of the arrival of the extremist Muslim cleric Abdullah el-Faisal would spread by word of mouth, and he attracted crowds of up to 150 people at a time. But beneath his jocular manner lay a philosophy skewed by hatred of "kuffars", or unbelievers, and shared by a web of associates allegedly leading back to Osama bin Laden.Yesterday Faisal, 39, was convicted of soliciting murder and stirring...