The fifth crowned portrait of HM Queen Elizabeth II facing right, wearing the George IV State Diadem and drop earrings.

The George IV State Diadem, officially the Diamond Diadem, is a type of crown that was made in 1820 for King George IV. The diadem is worn by queens and queens consort in procession to coronations and State Openings of Parliament. The piece of jewellery has been featured in paintings and on stamps and currency. It can be seen in the Queen's Gallery at Buckingham Palace.

ELIZABETH II DEI GRATIA REGINA FIDEI DEFENSATRIX means Elizabeth II, by the grace of God, Queen and Defender of the Faith.

Engraver: Jody Clark

The design depicts the whole of the Royal Shield of Arms.

Engraver: Matthew Dent

DECUS ET TUTAMEN — Latin for "An ornament and a safeguard", a phrase taken from Virgil's Aeneid, and here referring to the fact that the inscription serves both as a decorative feature and as a safeguard against the clipping of the coin's edges (this is not a modern concern, but harks back to the days when circulating coins were made of precious metals). This appears on coins with English-themed, Northern Irish-themed or general UK-themed designs.