Succession to British Throne?

No, he can be king and he will be in technical terms once the Queen passes it over to him. But, more than likely, he will abdicate and pass it onto Prince William because he is already too old. The reason I say that is, because in the time he would be declared king, they would have to change all the stamps, money, etc. to have his image instead and that would be pretty illogical if he'd only rule for a decade or so. So yeah, more than likely it will be William next.