UK Parliament Succession to the Crown was changed to allow the first-born Royal child to be in line for the Throne, now this principle must be extended to peerages Over a decade ago, when Queen Elizabeth II was on the throne, the Succession to the Crown was changed by allowing the first-born Royal child to be in line for the Throne, regardless of its sex. The Succession to the Crown Act by Harriett Baldwin MPFebruary 23, 2024