Really depends on what we're talking about. According to some on the far right, I lived (and still do) in a "no-go area" for non-Muslims. My experience disproves that claim.
What happened after the riots is a matter of record. Whereas the rioters were often not from the immediate areas, those people who were, came out for a counter-protest and to clear up. This is important because it shows that people with actual experience are generally not the ones who are anti-Muslim.
More stats without a source. Since there are nearly 70 million people in the UK (
source), so 800,000 is just 1.1%, that's entirely insignificant in a democracy. Depending on how you ask the question, more than 50% of people in the UK support the death penality (
source), so what? One of the points of having an open and democratic society is that people are actually allowed to disagree.
The extreme far right has far more support than Sharia and also undermines the foundations of our society. Trump in the US could undermine the entire basis of the western world. These threats are far more worrying and credible than the attitudes of British Muslims.
Bigotry and intolerance? Riots?