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The title King of Gibraltar continues to be used by Spanish monarchs even though the territory was ceded to the Crown of Great Britain in perpetuity under the terms of the Treaty of Utrecht of 1713. The continued use of the title thus emphasises a Spanish viewpoint that the British monarch merely has possession of Gibraltar, rather than sovereignty over it. The United Kingdom, by contrast, takes the position that the treaty transferred sovereignty as well as possession. It was customary for titles and arms of conquered territories to be omitted from British regnal claims. The title and arms were thus never claimed by the British monarchy.
In 2010 though the government of Gibraltar issued coinage using the title "Queen of Gibraltar"; the title appeared on most Gibraltar and UK government documents referencing the Queen in relation to Gibraltar.
King Charles III acceded to the throne on 8 September 2022 upon the death of his mother, Queen Elizabeth II, becoming the Head of State of a number of realms of the Crown, as well as all British territories - such as Gibraltar. | 
