UK Flag - Official Union Jack Symbol of the United Kingdom #37619 (License: Personal Use)

The Union Jack features a layered design of red and white crosses on a blue field, symbolizing the union of England (St. George’s Cross), Scotland (St. Andrew’s Cross), and Northern Ireland (St. Patrick’s Cross). Its proportions are 1:2, and it is flown officially across government buildings, embassies, and during national events. The flag has evolved since 1801, reflecting historical political unions within the UK.

Used on government websites, educational resources, travel guides, and news articles about the UK; matches user intent for learning about national symbols, citizenship, or preparing for international travel or events.