More about the terrorists involved in 7/7-
"a government-funded storefront youth centre in Leeds...was a hub of radical Islamist activity."
"On its walls were posters from the Respect Party, an extremist pro-Islamic party founded by MP George Galloway."
"He [Mr Tanweer] wasn't political at all -- he never mentioned Iraq or anything."
"None of the bombers were strongly connected with a particular mosque, although they all began praying five times a day as they became more devout during the past two years."
"they had become more devoutly religious and travelled to Pakistan for study trips"
"I never saw any sign of any politics in him -- I mean, when he read the paper he would only look at the sports pages," Mr. Tanweer's uncle, Bashir Ahmed, said in an interview yesterday. "He had been religious for some time, and I thought on Wednesday that he was going to one of his religious meetings. He was going to them all the time."
Politics then does not seem to be a motivating factor- religion was.