“In anticipation of the birth of the Royal baby, Parliament passed the Succession to the Crown Act in April 2013. It provides that in future the eldest child will be next in line of succession, whether it is a girl or a boy. The law will not come into force in time for the Royal birth, but the new baby when born will be next in line. This Blog post explains the background, and the difficulties involved in changing the rules of succession.”
UK Constitutional Law Group, 15th July 2013
Source: www.ukconstitutionallaw.org