We Protestants look upon the King, not as head of the Anglican Church, but as the representative of the British Empire.

The Catholic Answers

If you have any respect for the law of England you must regard the King as head of the Anglican Church. The law says that he is, and to deny it is disloyal. As an Anglican I always accepted the King as head of the Anglican Church. As a Catholic, I still look upon him as head of that Church. Every loyal subject must do so. In the Book of Common Prayer, prior to the Articles, you will read the profession of the King, “Being supreme governor of the Church which is committed to our care.” By law the very Bishops of the Anglican Church are subject to him in things spiritual as well as in things temporal. A man is loyal if he respects the laws of his country. We Catholics admit that the King is head of the Church of England, and we are loyal in doing so. But whether the Anglican Church is the true Church of Christ is another question. That we deny, and no law asks us to admit it. Nor could any valid law demand such an admission.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty