I remember years ago a Greek friend of mine telling me that prayers for the Royal Family in his local Orthodox church began, "Let us pray for the Royal Family, for her Gracious and Sovereign Majesty Queen Elizabeth, for her Consort Philip, the apostate ...". I was never quite sure whether he was pulling my leg or not but certainly Prince Philip was baptised into the Greek Orthodox Church. I do not know if he ever became a communicating member of the Church of England, or just pushed religion onto the back burner. The rumours are now that he has returned to Orthodoxy. He has certainly collaborated with the Patriarch of Constantinople on various projects. Recently he became the first "Royal" to visit Walsingham, at least since the Reformation, admittedly to open an Anglican visitor's centre.
Again the Queen, who notoriously is a "low church" Anglican is reportedly unhappy with the direction the ecclesial community, of which she is Supreme Governor, is going.
One of Fr Dwight's alter-egoes has an amusing take on these goings on.