Leslie Harrison Lambert (11 November 1883 – 13 December 1941), known in public as A. J. Alan, was an English magician, intelligence officer, short story writer and radio broadcaster.
[2] By November 1914 he was employed by the Admiralty at Naval Intelligence Room 40 although even until after his death official records said he had been working at the Foreign Office since 1909.
[3][1] In 1919 the staff at Room 40 became part of the new Government Code and Cypher School and Lambert was still working there at the outbreak of World War II.
[1][4] At Bletchley Park he was in Hut 8 and he was known to R V Jones who said that "in contrast to his outrageously unconventional stories" that he led his life on "a monotonously regular timetable".
[1][8] He always wore a dinner jacket and Stuart Hibberd described him as "a neat figure in perfectly cut evening dress, with eye glass and a slim black brief case".