The Act of Settlement prohibits Prince William from becoming King

On Friday 29 April 2011 Prince William of Wales and Miss Catherine Middleton were married in Westminster Abbey. The UK’s Act of Settlement (law) made William, forever incapable to inherit possess or enjoy the Crown and Government of this Realm because William was married in a Catholic Church.

The Westminster Abbey Declaration of Assent states:

“The Church of England is part of the One, Holy, Catholic and Apostolic Church, worshipping the one true God, Father, Son and Holy Spirit. It professes the faith

Catholic Church Nicene Creed:

“We believe in one holy catholic and apostolic Church.”

UK Act of Settlement (law) states:

That all and every Person and Persons that then were or afterwards should be reconciled to or shall hold Communion with the See or Church of Rome or should professe the Popish Religion should be excluded and are by that Act made for ever [incapable] to inherit possess or enjoy the Crown and Government of this Realm and Ireland and the Dominions thereunto belonging or any part of the same or to have use or exercise any regall Power Authority or Jurisdiction within the same And in all and every such Case and Cases the People of these Realms shall be and are thereby absolved of their Allegiance

Communion at the Inauguration of the Tenth General Synod of the Church of England at Westminster Abbey on Tuesday 24th November 2015. Elizabeth II in attendance: