United Kingdom

The national flag of the United Kingdom.

The flag is also known as the Union Jack or the Union Flag.

Symbolism
The red cross with white background in the centre of the flag is the Saint George's Cross and represents England. The white saltire and blue background is the Saint Andrew's Cross and represents Scotland. The thinner red saltire, at the time the flag was introduced, represented Ireland but now represents Northern Ireland. Wales is not represented on the flag as it was part of England at the time of the flag's adoption.