Well, the Muslim leaders in the UK told Blair, after the plot to blow up the airliners was discovered last summer, that Muslim dissatisfaction was due to the UK foreign policy in support of the US and Israel. And if Blair didn't change his foreign policy, he could have 2 million Muslim terrorists to contend with.
Also, the notion is being bruited about in liberal circles in the UK that if you support Israel or the US, you are betraying the UK by encouraging Muslim terrorism.
Blair's foreign policy has been entirely consistent throughout his Premiership. It's frequently misrepresented and misunderstood on this forum, but it's entirely consistent.