Demise of the Crown is the legal term in the United Kingdom and the other Commonwealth realms for the transfer of the Crown upon the death or abdication of the monarch. The Crown transfers automatically to the monarch's heir. The concept evolved in the kingdom of England, and was continued in Great Britain and then the United Kingdom. The concept also became part of the constitutions of the British colonies, and was continued in the constitutions of the Commonwealth realms, until modified within those realms.
Originally, the demise of the Crown in England had significant legal effects: individuals who had been appointed to office by the deceased monarch lost their positions; if Parliament was sitting, it automatically dissolved; and actions in the royal courts automatically discontinued and had to be re-started. Almost all of these legal effects have been abolished by statutes of the British Parliament and the parliaments of the Commonwealth realms, so that the demise of the Crown no longer has much legal significance.