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• General records of the Government Code and Cypher School

  Held by

  Date

  1914-1979

  Reference

• Government Code and Cypher School: Air Section: Weekly Reports

  Held by

  The National Archives, Kew

  Date

  1942-1945

  Reference

  HW 56

• Signals and correspondence relating to GC&CS liaison with Finland. Liaison was concerning...

  Held by

  The National Archives, Kew

  Date

  1940 Jan 26 - 1941 Jun 20

  Reference

  HW 61/56

• Irish Cyphers. Correspondence and work on Irish ciphers

  Held by

  The National Archives, Kew

  Date

  1944 Apr 10 - 1944 Jun 12

  Reference

  HW 53/56

• Air Section weekly progress reports 1-135 concerning cryptography, intelligence,...

  Held by

  The National Archives, Kew

  Date

  1943 Feb 22 - 1945 Sep 15

  Reference

  HW 56/1

• Weekly reports of the German Air sub-section concerning codes, intelligence traffic...

  Held by

  The National Archives, Kew

  Date

  1943 Dec 11 - 1945 May 12

  Reference

  HW 56/3

• Enemy exploitation of RAF low grade codes and cyphers in the Far East: miscellaneous...

  Held by

  The National Archives, Kew

  Date

  1944 Feb 25 - 1945 Sep 05

  Reference

  HW 40/56

• Organisation of communications at CBME

  Held by

  The National Archives, Kew

  Date

  1941 Aug 28 - 1944 Feb 21

  Reference

  HW 51/56

• Dossier on V Weapons - VERA Traffic. Notes concerning intelligence on the German...

  Held by

  The National Archives, Kew

  Date

  1943 Sep 25 - 1945 Jan 09

  Reference

  HW 50/56

• Decrypts of Japanese naval air messages

  Held by

  The National Archives, Kew

  Date

  1944 Jul 01-1944 Dec 21

  Reference

  HW 27/56

• Plus Japanese naval reports

  Held by

  The National Archives, Kew

  Date

  Jan 18 1942-Jan 21 1942

  Reference

  HW 5/56

• Log book of COM report distribution

  Held by

  The National Archives, Kew

  Date

  1942 Mar 01-1942 Aug 16

  Reference

  HW 32/56

• Reports of decrypts of Japanese military attachés messages

  Held by

  The National Archives, Kew

  Date

  1944 Sep 21-1944 Sep 25

  Reference

  HW 35/56

• Albanian Directorate of Security messages including activity on Albanian/Greek border...

  Held by

  The National Archives, Kew

  Date

  1948 Oct 29 - 1949 Feb 07

  Reference

  HW 75/56

• Staff recruitment, technical staff for Tunny development, printing of Tunny non-morse...

  Held by

  The National Archives, Kew

  Date

  1942 Oct 21-31

  Reference

  HW 14/56

• Soviet Comintern messages: ISCOT 301-400

  Held by

  The National Archives, Kew

  Date

  1944 Oct 2-1944 Oct 21

  Reference

  HW 17/56

• GAF report results of air attacks on Suez Canal area and Alexandria harbour, and...

  Held by

  The National Archives, Kew

  Date

  1941 Sept 9

  Reference

  HW 1/56

• Organisation of Air Ministry W/T Intelligence Service and employment in peace and...

  Held by

  The National Archives, Kew

  Date

  1932 Mar 01-1938 Apr 04

  Reference

  HW 2/56

• Weekly reports on cryptography and intelligence produced by the Latin sub-section...

  Held by

  The National Archives, Kew

  Date

  1944 Feb 26

  Reference

  HW 56/4

• Weekly reports of the F sub-section of the air section who were responsible for decoding...

  Held by

  The National Archives, Kew

  Date

  1942 Aug 22 - 1944 Oct 14

  Reference

  HW 56/2