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• Catalogue level

  Division

  General records of the Government Code and Cypher School

  HW 69.

  Held by

  Date

  1914-1979

  Reference

• Catalogue level

  Series

  Government Code and Cypher School: Sigint Board and predecessors: Correspondence...

  This series contains correspondence of the Sigint Board and its predecessors, the top level organisation which controlled the direction and priorities of signals intelligence work, including the manpower and employment of resources, tasking of units …

  Held by

  The National Archives, Kew

  Date

  1940-1945

  Reference

  HW 69

• Catalogue level

  Piece

  Security. Cooperation with United States. P/YB/113/AA1 Security ULTRA - USA, SEAC...

  Security. Cooperation with United States. P/YB/113/AA1 Security ULTRA - USA, SEAC [South East Asia Command] etc, OSS [Office of Strategic Services], FEA [Foreign Economic Administration], etc. P/YB/113/AA2 Security USA - North Africa. P/YB/113/AA3 Se…

  Held by

  The National Archives, Kew

  Date

  1942 Jul 07 - 1945 Aug 05

  Reference

  HW 69/9

• Catalogue level

  Piece

  Decrypts of medium/low grade German naval cypher messages

  Decrypts of medium/low grade German naval cypher messages

  Held by

  The National Archives, Kew

  Date

  1942 Aug 21-1942 Oct 12

  Reference

  HW 18/69

• Catalogue level

  Piece

  Decrypts of intercepted diplomatic communications. Afghanistan: 20134, 20157, 20175,...

  Decrypts of intercepted diplomatic communications. Afghanistan: 20134, 20157, 20175, 20197, 20220-20223, 20230. Argentina: 20124, 20174, 20254. Belgium: 20215, 20234, 20280, 20293. Brazil: 20141, 20219. Chile: 20166, 20210. Egypt: 20117, 20203, 20216…

  Held by

  The National Archives, Kew

  Date

  1925 Apr

  Reference

  HW 12/69

• Catalogue level

  Piece

  Reports in the series VM/2751 to VM/3000.

  Reports in the series VM/2751 to VM/3000.

  Held by

  The National Archives

  Date

  1943 Jan 29-1943 Feb 01

  Reference

  HW 20/69

• Catalogue level

  Piece

  CY/53/A RSS [Radio Security Service] Personnel India. YB/53/B RSS GP's [Gambier-Parry]...

  CY/53/A RSS [Radio Security Service] Personnel India. YB/53/B RSS GP's [Gambier-Parry] Attendance at Board meetings. London Sigint Board policy files on the Radio Security Service, responsible for interception of enemy illicit radio transmissions

  Held by

  The National Archives, Kew

  Date

  1944 Feb 04 - 1944 Aug 12

  Reference

  HW 69/15

• Catalogue level

  Piece

  DD (S) to EWT on future development of Sigint channels for new areas with recommendations,...

  DD (S) to EWT on future development of Sigint channels for new areas with recommendations, Cdr Saunders to oversee, Mar 4, paper from Saunders on proposal for forming Ultra Committee at BP with plans for dissemination of Ultra to military commanders …

  Held by

  The National Archives, Kew

  Date

  1943 Mar 1-10

  Reference

  HW 14/69

• Catalogue level

  Piece

  Personnel Review in Sigint Service. 'Y' [Sigint] Board file containing correspondence...

  Personnel Review in Sigint Service. 'Y' [Sigint] Board file containing correspondence on personnel from Chiefs of Staff, Sigint Board and others

  Held by

  The National Archives, Kew

  Date

  1944 Oct 10 - 1945 May 18

  Reference

  HW 69/4

• Catalogue level

  Piece

  Security South Africa. 'Y' [Sigint] Board file reflecting security reservations about...

  Security South Africa. 'Y' [Sigint] Board file reflecting security reservations about Sigint relations with South Africa

  Held by

  The National Archives, Kew

  Date

  1943 May 27 - 1943 May 28

  Reference

  HW 69/7

• Catalogue level

  Piece

  Security - Australia 1943-1945. P/YB/113/HH Security ULTRA - Australia. YB/113/0...

  Security - Australia 1943-1945. P/YB/113/HH Security ULTRA - Australia. YB/113/0 Security Australia, security arrangements 'Y' [Sigint] organisation. YB/113/OI Security Australia, leakage to Tokyo. London Sigint Board correspondence on security of Si…

  Held by

  The National Archives, Kew

  Date

  1943 Apr 22 - 1945 Jul 08

  Reference

  HW 69/12

• Catalogue level

  Piece

  Commercial reports

  Commercial reports

  Held by

  The National Archives, Kew

  Date

  1940 Dec 01-1940 Dec 09

  Reference

  HW 29/69

• Catalogue level

  Piece

  GCCS pensioner telegraphists' salaries

  GCCS pensioner telegraphists' salaries

  Held by

  The National Archives, Kew

  Date

  1939

  Reference

  HW 3/69

• Catalogue level

  Piece

  German section: reports of German army and air force high grade machine decrypts

  German section: reports of German army and air force high grade machine decrypts

  Held by

  The National Archives, Kew

  Date

  Mar 3 1942-Mar 6 1942

  Reference

  HW 5/69

• Catalogue level

  Piece

  Comintern messages: Communist Party of Great Britain, LONDON and BERLIN

  Comintern messages: Communist Party of Great Britain, LONDON and BERLIN

  Held by

  The National Archives, Kew

  Date

  1930 Mar 5-1931 Apr 2

  Reference

  HW 17/69

• Catalogue level

  Piece

  Administraive signals

  Administraive signals

  Held by

  The National Archives, Kew

  Date

  1943 Mar 29-1943 May 07

  Reference

  HW 41/69

• Catalogue level

  Piece

  Bulgarian State Security and National Militia messages including reports on agents...

  Bulgarian State Security and National Militia messages including reports on agents and activity on the border with Greece

  Held by

  The National Archives, Kew

  Date

  1947 Sep 17 - 1947 Oct 16

  Reference

  HW 75/69

• Catalogue level

  Piece

  Signals concerning access to Ultra messages

  Signals concerning access to Ultra messages

  Held by

  The National Archives, Kew

  Date

  1941 Apr 13 - 1943 Dec 13

  Reference

  HW 51/69

• Catalogue level

  Piece

  Decrypts of Japanese army and army air force messages

  Decrypts of Japanese army and army air force messages

  Held by

  The National Archives, Kew

  Date

  1945 Jun 15-1945 Aug 10

  Reference

  HW 52/69

• Catalogue level

  Piece

  Reports of Japanese army air decryots with subject headers

  Reports of Japanese army air decryots with subject headers

  Held by

  The National Archives, Kew

  Date

  1945 Apr 03-1945 Jun 08

  Reference

  HW 28/69