As part of ongoing research on both radical Islamist and far-right extremism, I spent the best part of 2009 following the activities of one British city’s al-Muhajiroun group. Also known as Islam4UK, this small group led by Omar Bakri and then Anjem Choudary has been a long-term irritant to the government, as well a staging post in the lives of many British terrorists.
Many of those who have committed terrorist violence in the UK and abroad have been part of or connected to the group. Khuram Butt – one of the three London Bridge attackers –

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