London, GB | Formerly of New York, Buenos Aires, Fife, and the Western Cape. | Saoránach d’Éirinn.

The Security Service, better known as “MI5” has changed its badge to incorporate the change from the St Edward’s Crown to the Tudor Crown that King Charles III has adopted.

The badge was designed by Lt-Col Rodney Dennys who himself had worked for the Security Service’s more glamorous rival, the Secret Intelligence Service (MI6). Dennys had started out in the intelligence game at the Foreign Office and was posted to the Hague before the war. When the Germans rolled in he was on one of the last boats to make it to Britain.

The MI5 emblem was approved by Garter King of Arms in 1981 but (like MI6) the Security Service was still so secret that it did not officially exist, so it was added to the secret roll of arms kept under lock and key in the depth of the heralds’ college in the City of London.

In 1993, after the Service’s existence was formally acknowledged, the badge became known and a flag bearing it often flies from the top of Thames House.

GCHQ has likewise adopted the Tudor Crown, but SIS has not publicly acknowledged any official emblem. (Perhaps it has its own entry in the heralds’ secret roll?) As such, MI6 uses a government version of the royal coat of arms, but theirs has yet to swap crowns.

Published at 8:05 pm on Thursday 23 January 2025. Categories: Design Errant Thoughts Great Britain Heraldry Tags: , .
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