Coat of arms of the United Kingdom

Coat of arms of the United Kingdom
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Name	Coat of arms of the United Kingdom
Armiger	Charles III in right of the United Kingdom and other Commonwealth realms
Year adopted	1837 (current basic form), revised 2022
Crest	On a helm with mantling, a lion statant guardant Or imperially crowned proper
Supporters	Dexter a crowned lion Or and sinister a unicorn Argent armed, maned and gorged with a coronet of crosses and fleurs-de-lis
Motto	"Dieu et mon droit"; compartment = A Tudor rose, thistle, shamrock and leek

Coat of arms of the United Kingdom is the official heraldic achievement used by the Monarch of the United Kingdom and by government bodies in England, Wales, Northern Ireland and other jurisdictions. It functions as a symbol of state authority across institutions such as the Parliament of the United Kingdom, the Prime Minister of the United Kingdom, the Foreign, Commonwealth and Development Office and the Ministry of Defence, appearing on official documents, seals and public buildings. The achievement embodies dynastic lineage, territorial claims, and constitutional roles linked to historic actors like the House of Windsor, George V, Victoria and treaties such as the Acts of Union 1707 and Act of Union 1800.

History

The arms trace their origins to medieval personal arms of monarchs such as Henry II and Richard I, evolving through dynasties including the House of Plantagenet, the House of Tudor, the House of Stuart and the House of Hanover. The quartered arrangement reflecting England, Scotland and Ireland became established after the Union of the Crowns 1603 under James VI and I and was further modified by the Acts of Union 1707 and Acts of Union 1800. Notable historical alterations occurred under George III and during the reign of Queen Victoria with imperial emblems added in the context of the British Empire and colonial administration involving entities like the East India Company and the Imperial General Staff. Modern standardization in 1837 aligned with accession of Victoria, and 20th–21st century revisions responded to constitutional changes affecting Northern Ireland, the Commonwealth of Nations and statutory offices such as the Lord Chancellor.

Design and symbolism

The shield's quarters symbolize constituent nations: English lions reference medieval royal heraldry associated with William the Conqueror's successors, the Scottish lion rampant echoes the arms of Alexander II and later Robert the Bruce, while the Irish harp derives from Gaelic harp tradition linked to Henry VIII's policy in Ireland. The crest lion evokes continuity with monarchs like Edward the Confessor, and the unicorn supporter recalls Scottish heraldic practice reaffirmed by Union of the Crowns. Crowns, roses and thistles reference dynastic and dynastic-marital politics involving houses such as Lancaster and York and events like the Wars of the Roses. The French-language motto "Dieu et mon droit" reflects Angevin and Angevin-derived claims that figured in medieval diplomacy with states such as France and treaties like the Treaty of Picquigny.

Variants (Royal, Governmental and Personal)

Multiple variants exist: the Royal Arms used by the sovereign in right of the realm; the Government Royal Arms used by departments like the Home Office and the Treasury; and personal arms incorporating royal cyphers for members of the Royal Family such as The Prince of Wales and Princess Anne. Scotland employs a distinct Scottish Royal Arms variant for use by the First Minister of Scotland and Scottish institutions, reversing English and Scottish quarters and featuring the motto of Scotland "In Defens". Commonwealth realms including Canada, Australia and New Zealand use versions altered by local law or prerogative, paralleled by civic arms of cities like London, Edinburgh and Belfast that integrate municipal charges with royal elements. Historically, colonial governors bore unique variants administered through the College of Arms and the Court of the Lord Lyon.

Usage and protocol

Usage is regulated by prerogative, statutory instrument and heraldic authority: the College of Arms advises in England, Wales and Northern Ireland while the Court of the Lord Lyon governs Scottish usage. The arms appear on instruments including Passports of the United Kingdom, commissions for Royal Navy officers, warrants of the Crown Prosecution Service, and insignia of royal honours like the Order of the Garter and Order of the Thistle. Protocol distinguishes sovereign use, ministerial use and licensed commercial reproduction; unauthorized use may conflict with the prerogative held by the Crown and offices like the Attorney General for England and Wales or the Director of Public Prosecutions may be involved in enforcement. Ceremonial display occurs at sites such as Westminster Abbey, Buckingham Palace and royal residences during state occasions like State Opening of Parliament.

Heraldic elements and blazon

Blazoning follows classical heraldic language: Quarterly, 1st and 4th Gules three lions passant guardant Or (for England); 2nd Or a lion rampant within a double tressure flory-counter-flory Gules (for Scotland); 3rd Azure a harp Or stringed Argent (for Ireland). The crest is a statant guardant crowned lion; supporters are a crowned lion and a chained unicorn argent; compartment bears the floral emblems of the Tudor rose, thistle, leek and shamrock. Heraldic differences and marks of cadency have been used historically to distinguish branches of houses such as the Plantagenets, Tudors, Stuarts and Windsors, and heraldic practices link to treatises by authors like Johannes de Sacrobosco and institutions such as the Heralds' College.

Legal status and protection

The arms are vested in the Crown and protected by law and convention; misuse may be actionable under provisions concerning royal emblems and identity. Rights are administered through letters patent issued by the College of Arms and criminal or civil remedies can involve statutory offences and common law actions pursued by parties including the Metropolitan Police Service or the Attorney General. Licensing for commercial use is required in many contexts and intellectual property frameworks interact with heraldic prerogative in disputes involving entities such as the BBC and private corporations. Internationally, recognition of the arms occurs through diplomatic practice codified in instruments involving the Foreign and Commonwealth Office.

Category:Heraldry of the United Kingdom