Weathermen with Scimitars

Intelligence experts and Islamic leaders agree that Thursday July 7 marks the bloody emergence of home-grown Islamic terrorism in Britain rather than the arrival of Al-Qaeda's bombers on these shores. The favourite hypothesis of investigators is that the bomb teams comprised a cell of some eight or nine young British Muslims, led by a foreign-born “talisman” figure who controlled and directed them.
“This is a very worrying situation,” said M J Gohel, head of the London-based Asia Pacific Foundation which monitors Islamic terrorism. “We're looking at a new generation of terrorists – people who are not directly linked to Osama Bin Laden or Al-Qaeda so they can slip under the net of the security services. These are people born or brought up in western Europe, so they fit in but are infected by Bin Laden's ideology.”

Link.

Disconcerting like the Weather Underground Organization? Or is this something more serious? The article above seems to indicate it's much more serious.