Woolwich attack: suspect Michael Adebolajo 'linked to banned group Al-Muhajiroun' He first joined Hizb ut-Tahrir but left in 1996, because it was not extreme enough for him, and he relaunched Al-Muhajiroun, along with Choudary. The organisation was made up of a small band of men who advocated a worldwide Islamist state. Bakri left the UK in 2005 and the then Home Secretary banned him from returning. However, in 2009, Choudary revived Al-Muhajiroun and set up Islam4UK and continued its work. The group warned shortly before it was banned that "another platform with a new name will arise to continue to fulfil these divine objections until the sharia has been implemented."