The Conversation today published a piece by PERU's Gavin Bailey, looking at the history of al-Muhajiroun.

Gavin spent almost a year with the group in 2009, prior to their proscription under terrorism legislation, and in this piece outlines their origins and activities. While we know that many terrorists have had connections with the group, Gavin concludes by considering the difficulties of knowing who will change from angry talk to actual violence.