I heard an Anglican priest in the Church of the Knights Templar (or some such name, that got some notoriety in the DeVinci Code tale) located in the law quadrangle of London across from the Royal Courts, refer to the Anglican Church as her majesty's Catholic Church, the reformed Catholic Church. That give me a bit of a start. :)
The dilemma here is that you are capitalizing "Catholic". In fact, "catholic" merely means "united". The whole church worldwide is "catholic". The "Catholic" church is just a particular sect based in Rome. ;)
"That give me a bit of a start. "
I'm think ing St. Thomas More probably pulled a quarter turn in the grave, as well.