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• General records of the Government Code and Cypher School

  Held by

  Date

  1914-1979

  Reference

• Government Code and Cypher School and predecessor: Meteorological Section: Correspondence

  Held by

  The National Archives, Kew

  Date

  1939-1945

  Reference

  HW 54

• Washington: (Query re official visit to USA.)

  Held by

  The National Archives, Kew

  Date

  1943 July 19

  Reference

  HW 15/54/54

• Correspondence and information passed between the RAF intercept site at Dunstable,...

  Held by

  The National Archives, Kew

  Date

  1940 Jan 01 - 1945 Jul 07

  Reference

  HW 54/5

• Correspondence with the French on German meteorological cyphers

  Held by

  The National Archives, Kew

  Date

  1939 Oct 01 - 1939 Oct 31

  Reference

  HW 54/3

• Translations, Nos. YX/01-57. These appear to be decrypts and translations done at...

  Held by

  The National Archives, Kew

  Date

  1932 Jun 16 - 1935 Nov 18

  Reference

  HW 61/54

• Correspondence with intercept sites in the Middle East, Malta and Algiers

  Held by

  The National Archives, Kew

  Date

  1944 Jan 04 - 1945 May 03

  Reference

  HW 54/14

• Correspondence with the Signal Security Agency, Washington DC concerning European...

  Held by

  The National Archives, Kew

  Date

  1942 Jun 01 - 1943 Dec 31

  Reference

  HW 54/2

• Correspondence with USA and Canada on Japanese meteorological cyphers

  Held by

  The National Archives, Kew

  Date

  1944 Feb 24 - 1944 May 02

  Reference

  HW 54/16

• Allied cypher settings

  Held by

  The National Archives, Kew

  Date

  1941 Mar 28 - 1944 Mar 02

  Reference

  HW 51/54

• Reports in the series QT/9001 to QT/9250.

  Held by

  The National Archives

  Date

  1942 Dec 20-1942 Dec 23

  Reference

  HW 20/54

• GRU Naval (Soviet Naval Intelligence) Attaché Traffic: Moscow with Washington, USA....

  Held by

  The National Archives, Kew

  Date

  1943 June 2-1943 Nov 14

  Reference

  HW 15/54

• Decrypts of intercepted diplomatic communications. Afghanistan: 15388-15389, 15410-15412,...

  Held by

  The National Archives, Kew

  Date

  1924 Jan

  Reference

  HW 12/54

• GP decrypts selected by Major Pritchard of 4 IS as being of special interest for...

  Held by

  The National Archives, Kew

  Date

  1942 Jan-May

  Reference

  HW 16/54

• Correspondence with the Signal Security Agency, Washington DC concerning Japanese...

  Held by

  The National Archives, Kew

  Date

  1942 Sep 01 - 1943 Dec 31

  Reference

  HW 54/1

• Correspondence on Russian meteorological cyphers

  Held by

  The National Archives, Kew

  Date

  1939 Sep 17 - 1940 May 07

  Reference

  HW 54/4

• Liaison with the United States forces

  Held by

  The National Archives, Kew

  Date

  1943 Sep 13 - 1945 Sep 27

  Reference

  HW 64/54

• Correspondence with intercept sites in the Middle East concerning European cyphers

  Held by

  The National Archives, Kew

  Date

  1943 Dec 01 - 1945 May 31

  Reference

  HW 54/15

• Correspondence with Air Ministry and Cabinet Office

  Held by

  The National Archives, Kew

  Date

  1943 Dec 14 - 1944 Sep 20

  Reference

  HW 54/8

• GC&CS Army and Air Force Sigint Volume XI: Miscellaneous Cryptographic Systems and...

  Held by

  Creating government department or its successor

  Date

  1939 Sep 01 - 1945 Aug 30

  Reference

  HW 43/54