Union Jack Flag - Official Flag of the United Kingdom #1611998 (License: Personal Use)

The Union Jack is the national flag of the United Kingdom, formed by superimposing the crosses of St George (England), St Andrew (Scotland), and St Patrick (Ireland). Its distinctive red, white, and blue design has been in use since 1801 and reflects centuries of political union and shared identity. The flag is flown on government buildings, during national events, and internationally to represent British sovereignty.

Used on official government websites, educational resources, travel guides, and news articles about the UK; matches user intent for learning about national symbols, history, or preparing content related to British culture and identity.