Succession to the British throne is hereditary and automatic. The heir becomes monarch the instant their predecessor dies — there is no gap, no interregnum and no requirement for any ceremony. “The King is dead, long live the King” is a statement of constitutional mechanics.
The coronation that follows, sometimes more than a year later, is a religious confirmation of something that has already happened.
The current line
- William, Prince of Wales
- Prince George
- Princess Charlotte
- Prince Louis
- Prince Harry, Duke of Sussex
The line continues through Harry’s children and then to Prince Andrew and his descendants, and onwards through several thousand people who are technically in the succession and will never come near it.
The 2013 reform
The Succession to the Crown Act 2013 made two significant changes, agreed first by all sixteen Commonwealth realms since the monarch is head of state in each:
- Male preference primogeniture was abolished for anyone born after 28 October 2011. Previously a younger son displaced an older daughter; now the eldest child succeeds regardless of sex.
- Marrying a Roman Catholic no longer disqualifies a person from the succession.
The first change is the reason Princess Charlotte remains ahead of her younger brother Louis — the first time in British history that a younger brother has not displaced an elder sister.
What was not changed
A Roman Catholic still cannot become monarch. The Act of Settlement 1701 bars Catholics from the throne, and the sovereign must be in communion with the Church of England, of which they are Supreme Governor.
The reform removed the bar on marrying a Catholic but left the bar on being one, which critics regard as an incoherent halfway position. The government’s stated reason was that changing it would require unpicking the established church itself.
Where the rules come from
Succession is set by statute, not by royal decision:
- The Bill of Rights 1689, after the deposition of James II.
- The Act of Settlement 1701, which secured a Protestant succession by passing the crown to Sophia of Hanover and her Protestant descendants — bypassing more than fifty people with better hereditary claims.
- The Succession to the Crown Act 2013.
Parliament has therefore chosen the ruling family, which is the practical demonstration that sovereignty rests with Parliament rather than with the Crown.
Abdication
There is no established mechanism. Edward VIII‘s abdication in 1936 required a specific Act of Parliament, His Majesty’s Declaration of Abdication Act, passed in a single day, and any future abdication would need the same — plus the agreement of the other realms.
Elizabeth II never contemplated it, having made a public promise of lifelong service on her twenty-first birthday, and Charles III has given no indication of any different view.