Example image of eyePlorer eyePlorer map for 'Union Flag': Flag of the United Kingdom Commonwealth realm Act of Union (1800) Flag Institute Vexillology Charles I of England George III of the United Kingdom British Empire James I of England Kingdom of England Kingdom of Ireland Kingdom of Scotland Laws in Wales Acts 1535–1542 List of Scottish monarchs Personal union Wales Union of the Crowns Acts of Union 1707 Kingdom of Great Britain Blue Ensign Navy blue Pantone Royal Navy Maritime flag Royal blue Scottish Parliament Argent Fimbriation Lord Lyon King of Arms Rule of tincture Blazon Edward I of England Diocese Flag of Saint David Flag of Wales St David's Coat of arms of Ireland Escutcheon (heraldry) The Protectorate Charles II of England English Restoration Northern Lighthouse Board Edinburgh George Street Taunton, Massachusetts United States Westmoreland County, Pennsylvania Flag of the United States Flag terminology Grand Union Flag