Opinion research company Policy Exchange has conducted a survey of the views of 3000 Muslims living in Britain.

It declares that 93% wish “to integrate fully” into the British way of life. Now, to integrate fully is, by definition, to share a consensus. This doesn’t mean that everyone has to agree with everyone else about everything. But it does mean that a person integrated into a society will tend to share the important things, including beliefs, in common within that society.

How to square Muslims’ expressed with to belong with some of their beliefs? I don’t mean their religious beliefs. I mean the fact that, according to Policy Exchange, 96% of Muslims do not believe that Al Q’aeda perpetrated the 9/11 atrocities in the US. 31% believe that the Americans themselves carried out these attacks. And 7% say the Israelis were responsible.

Here’s another Muslim belief – or rather disbelief: only one in four Muslims believes that extremist Islamic views are held by any Muslim anywhere.

Every previous opinion poll among native British people has shown that the overwhelming majority is convinced that the 9/11 attacks were the work of Al Q’aeda. And every non-Muslim living in Britain knows that there are extremist Islamic views, leading to acts of terrorism: for we have all seen these crimes enacted on our streets and in our tube trains.

A group of people who refuse to believe known facts is not accurately described as “fully integrated”:  more appropriate phrases would be “lunatic fringe” and “in denial.”

I have one question to Muslims living in our country: If you say you wish “to integrate fully” into mainstream British society, then why don’t you?