https://www.nationalarchives.gov.uk/documents/audio/ciphers-used-by-mary-queen-of-scots.mp3 Page of ciphers used by Mary Queen of Scots, c.1586 (SP 53/22 f.1) After the discovery of the Babington Plot in 1586, Mary’s apartments were searched and all of her papers seized. They included more than 100 ciphers used in her correspondence. Tudor espionage was quite sophisticated and several different codes were used in […]