Ed Husain, British Muslim who was a member of Hizb ut-Tahrir when he was a college student in East London offers his take on the men in the Operation Crevice plot. From the London Telegraph:
I know how these young men are inspired to wreak death and destruction because I have first-hand experience of being in one such cell. I have since seen the error of my ways.
I was part of the secret cell structure of Hizb ut-Tahrir, an extremist organisation banned in most Muslim countries and rejected by most mosques in Britain. Yet the group had a free rein on university and college campuses, where it advocated that British Muslims were a community whose allegiance lay not with Queen and country, but to a coming caliph in the Middle East.
This caliph would instruct us to act as agents of the caliphate in Britain, and open a "home front" by assisting the expansionist state. We believed that all Arab governments were not sufficiently "Islamic" and were liable to removal; entire populations would submit to the army of the caliph, or face extinction.
...All this can easily be dismissed as extremist claptrap. But the mindset and ideology that spouts this worldview - Islamism - is entrenched in certain sections of the Muslim community in Britain.
...To argue that dialogue will win over extremist Islamists is a myth; theirs is a mindset that is not receptive to alternative views, and does not recognise the sacred nature of all human life.
What to do? Husain says organizations like Hizb ut-Tahrir have to be banned:
...As long as it remains legal for extremists in Britain to plan and finance Islamist attempts to mobilise the Muslim masses in the Middle East, and prepare an army for "jihad as foreign policy", there will always be a segment of this movement that will take jihad to its logical conclusion and act immediately, without leadership.
The rhetoric of jihad introduced by Hizb ut-Tahrir in my days was the preamble to 7/7 and several other attempted attacks. By proscribing Hizb ut-Tahrir, we would send a strong message to extremists that Britain will not tolerate intolerance. Yes, we are a free country with a proud tradition of liberty, but it has always had limits.