Yep! Birmingham has a HUGE problem. As does Sheffield, Leeds, and Bradford.
In fact....some years ago, some kids made a video “taking the piss” out Birmingham (punk style).
http://www2.b3ta.com/birmingham/
Had friends that lived in a certain district in Sheffield with a huge Paki community. The cabbies wouldn’t even come pick us up after a party.
Don’t forget the East End of London; Whitechapel, Bethnal Green, Bow, Mile End, Shoreditch, Stepney, Hackney......almost completely Muslim.