The World Tonight reported that MI5 is tracking some 2000 Islamist extremists in the UK. For each of those under surveillance there may be ten or a hundred sympathisers. So it looks like there are some bumps ahead. As is almost always the case, Steve Bell is on to something, but radicalisation was happening without the 2003 Iraq invasion. Kashmir, Bosnia and Chechnya already offered material for entrepreneurs of rage and hate.
[P.S. 3 May: Catherine Bennett on angst about the UK's national slaggishness]