UK Flag - Union Jack Official Design and Symbolism #1645849 (License: Personal Use)

The Union Jack is the de facto national flag of the United Kingdom, formed by superimposing the red cross of Saint George (England), the white saltire of Saint Andrew (Scotland), and the red saltire of Saint Patrick (Ireland). Its distinctive red, white, and blue pattern has remained largely unchanged since 1801, symbolizing the political union of the constituent countries. The flag is used on government buildings, during national events, and internationally to represent British identity and heritage.

This image is commonly used on educational, governmental, and travel websites to illustrate UK identity, history lessons, citizenship resources, or international representation. It serves users seeking factual information about national symbols, flag etiquette, or cultural context.