A secret list prepared for a top British security official accuses peaceful Muslim groups, politicians, a television channel and a Scotland Yard unit of sharing the ideology of terrorists.
The list was drawn up for Charles Farr, the director general of the Office for Security and Counter-Terrorism (OSCT), a directorate of the Home Office. Farr is a former senior intelligence officer.
It was sent to him in June by the Quilliam Foundation, a counter-extremism thinktank which has received about £1m in government funding.
Quilliam was co-founded by Ed Husain and Maajid Nawaz, former activists in the radical Islamist party Hizb ut-Tahrir. Critics of the foundation accused it of McCarthyite smear tactics and branded its claims ridiculous. The foundation declined repeated requests for comment.