The flag of Britain is called the "United Flag", and it is also called the national flag. It combines the symbolic elements of England, Scotland and Wales. The blue background of the national flag represents Scotland, the white diagonal stripes represent Ireland and the red diagonal stripes represent England. This flag mainly presents the concept of union and does not represent British sovereignty or national symbol. In addition, the British flag is also an official symbol, which often appears in the British government and international activities.

The British flag can be traced back to 1606, when James I wanted to combine the flags of three countries to show its national unity. The original design has been revised many times in the past few centuries, and it was not until 180 1 that Ireland joined the United Kingdom that the present design was formed. The British flag has become a symbol of its history, culture and unity.

The significance of the British flag is not only that it is an official symbol, a symbol of history and culture, but also that it conveys the close ties between Britain and Ireland, Scotland and Wales. This flag shows a pluralistic and closely related social and cultural structure, which is an important value of Britain, the whole Commonwealth and other international organizations.