From AFP:
Islamic extremists "viewed 7/7 (the July 7, 2005 suicide attacks on London's transport network) as just the beginning," an unnamed senior source said…. Britain is seen as an easier threat for Al-Qaeda than many other countries because of its historic links with Pakistan, with tens of thousands of travelers between the two countries each year, the newspaper reported. "It's all about building up these recruits to consider themselves as Muslim 'patriots' and encouraging them to make the leap and ask themselves 'This is how the west treats Muslims, what are we going to do about it?'", another unnamed source told The Guardian.