I'm going to throw out some numbers/info for you: -In France alone 25% of the teenage population are Muslim. While France is not part of Britain, it IS your neighbor. -There are roughly 3 million Muslims in the UK, based off numbers from 2011. --This number makes up about 5% of your population. --The Muslim population of England and Wales is growing faster than the overall population according to an analysis of official data. -Based off past data, the Muslim population is expected to grow to around 25 million by 2051. Now that we have some numbers, let's dive DEEEEEEP IN THAT PUTANG: This is what I just pulled real quick from the net. I didn't feel like finding more up-to-date stuff. It's probably worse now, though. -Polls from around 10 years ago showed this: --30% (900,000 Muslims) want Sharia Law. --28% (840,000 Muslims) want Britain to be an Islamic State. -A ComRes poll for the BBC in February of 2015 found that 27% of British Muslims had some sympathy for the motives behind the attacks on Charlie Hebdo. Now, there is an estimated 9 million of Syrian refugees in the EU. It's safe to assume that almost all of them are Muslims. It's been said that the refugees will not be able to assimilate into your society because there are just too many coming in at once which will allow them to set up their own communities and not have a need to adjust to Western society. Also, I'd like to point out that the number of refugees coming into the EU is still own pace with the number that came in last year and we haven't even entered Spring yet.