Britain has had massive muslim immigration over the years. They settle an area, usually the north of england cities such as leeds or bradford, also manchester, and simply do not integrate. A report by the uk government a few years back into the subject, discovered that there are people who had come to the uk back in the 1970's, usually women, who have have not one word of english. They have disdain for the rights of women, non muslims, gay people etc.

Some of the apologists, usually the lefties, say that is because of lack of education. However two muslims were caught planning a terrorist attack recently were both qualified chemists and by extention had doctorates. So that sort of scotches that theory.