Meaning of the Union Jack on the UK Flag

The Union Jack (Union Flag) is the national flag of the United Kingdom. Its design merges the patron saints' crosses of three constituent nations:

• England: Red cross of St George on white.
• Scotland: White saltire (diagonal cross) of St Andrew on blue.
• Northern Ireland: Red saltire of St Patrick on white.

Wales is not separately represented (historically part of England). The flag symbolizes the 1707 (Great Britain) and 1801 (United Kingdom) unions. It represents unity, shared sovereignty, and British identity worldwide.