I took part in a discussion on Sky News at lunchtime about changing the law on succession to the crown. At the moment, we have male-preference primogeniture: that is, the eldest son inherits. The Government is examining a change to lineal primogeniture: that is, the eldest child inherits, regardless of whether the child is male or female. If the law is changed, it will currently make little difference: Princess Anne will move up from being ninth in line to the throne to being fourth. It will only have practical relevance if Prince William and Kate Middleton have a daughter and then a son. The daughter would then inherit the throne instead of the son.
I cannot see such a change being especially contentious, though it requires the agreement of other Commonwealth countries of which the monarch is head of state. One tabloid has said that Buckingham Palace has some concerns because it could impact on Christian belief and practice. They appear to be confusing this proposal with that for allowing a Roman Catholic to succeed to the throne and for a monarch to be permitted to marry a Royal Catholic. The monarch is the supreme governor of the Church of England. Allowing a Roman Catholic to inherit the throne creates the problems, not allowing the eldest child to succeed.