Certainly possible. The Pakistani population is pretty heavily concentrated in Ontario, though, and there isn't any great strife there either. About 1.5% of the population in Ontario is of Pakistani origin (and that has massively increased in the past 20 years), versus 2.7% for the UK as a whole, from what I can see.
I'm definitely not saying that there isn't a difference here, I'm curious why there is a difference. My suspicion is that it's something of a feedback loop: people retreat into kinship groups out of a (real or perceived) feeling of conflict which results in Balkanization which results in further feelings of conflict for everyone involved and a hardening of positions, and things spiral from there. Whether by luck or because it's hard to get too angry when you're really cold, we've largely been spared that feedback loop; the only significant ethnoreligious violence I can think of was the Air India bombing by Sikh extremists, and that happened before I was born.