How many times must I say it Musket?
Religion plays no part.
Such behaviour is haram.

Jim, do not say things like "please go ahead and start a thread" if you mean the opposite.

Do not say, "the persecution of British Muslims has been cited as a cause of Islamism" if you can not give a single example (because it never has!)

"Cultural connections"
I have not made any.
The over-representation is a matter of fact and you make yourself ridiculous denying it. Cultural connections must be a matter of opinion and I leave that to people with an intimate knowledge of that culture.
I do note that they do link culture to the over-representation.