I think London et al and surrounding regions have had a cozy relationship with Islam for some time. I suspect it started becoming warmer after Britain went back on giving the Jewish people the land of Israel after WWII. 

Bell_curve

> camp of the saints by Raspail
  

Nope, but it looks relevant.

Why they do it?

To destroy western civilization and culture 

Edit: replacement theory is now empirical fact. 

Have you heard of camp of the saints by Raspail? 


I am allowing you to explain your position.  Why England does it is different than why the west does it, as far as I know.