Career

Educated in London and then the Netherlands and Belgium, she became proficient in a French, Dutch and German. In 2011, the Royal Society of Chemistry discovered details of her activities during the First World War. During the War, she worked in the newly formed department of Postal Censorship in the War Office.

There she became suspicious that a seemingly standard business letter contained a hidden message written in invisible ink.

This message was soon discovered to contain a message written by a German Spy, Anton Kuepferle. An appeal for more information about Mission Elliott uncovered a surviving family member, her great-niece Rosalind Noble.

Mabel Elliott died on 9 January 1944.