So, correct, UK colonized India/Pakistan/Bangladesh back in the day. So many of the troublemakers seem easily traceable to Pakistan and I would guess, that's most or all we have here. UK allowed their former colonies to migrate to the UK.
@TomSea At this point I don't even blame the Muslims for doing this sort of thing. After all,they are just poor,dumb animals that don't know any better.
I blame the societies that not only let them get away with it,but encourage more of them to come and live off the work of the native citizens.