An extremist Muslim will behead someone for insulting Islam.
A moderate Muslim will hold the victim down.
Islam is a vile, disgusting, insult to humanity. It is long past time it is driven to extinction just like the evil, oppressive ideologies that came before it. The only way to deal with these animals is to stop treating them with any compassion and regard them as hostile animals, because that is what they are.
The only appropriate response is to find 100 Muslims in England, drag them into the street, and shoot them in the head. If the Muslims retaliate with more killing, kill 100 more for each of their victims. They will run out of Muslims long before the civilized world runs out of citizens. This is the only way they will learn there are consequences for their despicable behavior.