Excerpt:
An Islamic preacher told students it was difficult to argue with the views of Osama bin Laden and said "terrorism works" in a speech at the university attended by the Detroit bomber, it can be disclosed.
Abdur Raheem Green, a Muslim convert and former public schoolboy, told students at University College London that a "permanent state of war exists between the people of Islam and the people who opposed Islam".
He gave the speech, seen by The Daily Telegraph, to the university's Islamic society while Umar Farouq Abdulmutallab, the Detroit bomber, was a student there in 2005.