King of Great Britain

There have been 13 British monarchs since the political union of the Kingdom of England and the Kingdom of Scotland, which occurred on 1 May 1707 upon the commencement of the Acts of Union. The first British monarch was Anne, who reigned between 1707 and 1714; the current monarch is Charles III, who acceded to the throne in September 2022. Although the style of "King of Great Britain" had been in use since the personal union of England and Scotland on 24 March 1603 under James VI and I, the official title came into effect legislatively in 1707 and therefore, apart from Anne, this list of British monarchs does not include the four earlier kings and one queen who ruled as monarchs of England and Scotland at the same time.