This is what people fail to understand. Islam isn't like Catholicism or CofE, where there's an undisputed head. and even in those religions, there are different strands (e.g. Opus Dei, Jesuits, etc.) There are a number of different Islamic sects, mainly Shia and Sunni but there are other smaller ones. Within those top level sects, there are different belief sets (e.g. the Wahhabist movement, which is a belief set in Sunni Islam). Islam & Judaism are largely based on individual communities and places of worship. There's no one who speaks for these with a single voice.