Coat of arms of the United Kingdom
The coat of arms of the United Kingdom, also referred to as the royal arms, are the arms of dominion of the British monarch, currently Charles III. They are used by the Government of the United Kingdom and by other Crown institutions, including courts in the United Kingdom and in some parts of the Commonwealth. Differenced versions of the arms are used by members of the British royal family.
Source: Wikipedia — Coat of arms of the United Kingdom (CC BY-SA 4.0)