Short answers, pulled from the story.
Britannia is the national personification of Britain, traditionally depicted as a helmeted female warrior holding a trident and shield. She represents British national identity, maritime power, and unity, and has appeared on British coinage, banknotes, and postage stamps for centuries.
Britannia first appeared on British coinage on a farthing in 1672 during the reign of Charles II, with earlier pattern versions from 1665. Samuel Pepys recorded that the figure was modelled on Frances Teresa Stuart, the future Duchess of Richmond.
Britannia's trident replaced her original spear in 1797 to symbolise the Royal Navy's victories. A helmet was subsequently added to the coinage in 1825.
The name Britannia is a Latinisation of the native Brittonic word Pretanī, the name the indigenous people used for Great Britain. The Greek explorer Pytheas first recorded a version of the name in the 4th century BC as Prettanike or Brettaniai.
In the spring of 2008, the Royal Mint unveiled new coin designs that removed Britannia from ordinary circulation coins. She continued to appear on the annually issued gold and silver Britannia bullion coins, and a new definitive two-pound coin featuring her image was issued in 2015.
The Brit Award statuette, given at the British Phonographic Industry's annual music awards, depicts Britannia. The statuette has been redesigned by notable British artists and designers including Damien Hirst, Tracey Emin, Sir Peter Blake, Dame Vivienne Westwood, and Dame Zaha Hadid.