And the mayor of your biggest city is a muslim.
So what? AFAIK, Sadiq Khan has been doing a superb job for a while now. You can never completely eliminate all the crimes when your population is close to ten million.

Your point ain't making much sense to me. Mayors are elected to make the overall infrastructure better, which includes the improvement of the system of transport, housing, policing, etc. If a Muslim mayor is able to handle all this in a good manner, why the hell should anything else (including religion) even matter?
You can never trust a muslim, the koran gives them the right to lie and manipulate any and all infidels in order to promote islam.
Additionally, the Prophet was a perfect being who any muslim should strive to emulate. He is flawless and must not be criticized.
He married a six year old girl.
This means that muslims support or at the least do not oppose pedophilia. Anything else would be haram.