National Symbols of the Commonwealth (Cromwell the Great)

The main national symbols of the Commonwealth of England, Scotland and Ireland are the Union Flag and the Arms of the Commonwealth.

National Flags
The national flag and official variants are:

Anthem
Rule, Britannia! is a British patriotic song that later became the official anthem of the Commonwealth.

Unofficial symbols and motifs
Britannia is is the name given to the female personification of the island and the Commonwealth of England, Scotland and Ireland. The personification of the martial Britannia is used as an emblem of British maritime power and unity, most notably in "Rule, Britannia!".