While listening to Pink Floyd's - Waiting for the Worms - they mentioned "Would you like to see Britannia rule again". I was curious, so I looked her up.

Britannia (/brɪˈtæniə/) is the national personification of Britain as a helmeted female warrior holding a trident and shield.[1] An image first used by the Romans in classical antiquity, the Latin Britannia was the name variously applied to the British Isles, Great Britain, and the Roman province of Britain during the Roman Empire.