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• Catalogue level

  Piece

  IWS00001719.pdf

  Exhibit HW/1 - KCTMO repairs log for Flat 66 various dates from 2003 - Dec 2016Evidence provided by: Birnberg Peirce

  Held by

  The National Archives, Kew

  Date

  2020 Mar 05

  Reference

  GTI 2/HHS5/Z

• Catalogue level

  Division

  General records of the Government Code and Cypher School

  TECHNICAL MATTERS: 'Y' Station HW 55; Air Section HW 66.

  Held by

  Date

  1914-1979

  Reference

• Catalogue level

  Series

  Government Code and Cypher School: Air Section: Correspondence, Analytical and Technical...

  This series contains unregistered messages, correspondence and reports of the Air Section with the Air Ministry, with RAF Cheadle and other authorities, principally on technical analysis and interception matters relating to German Air Force communica…

  Held by

  The National Archives, Kew

  Date

  1940-1942

  Reference

  HW 66

• Catalogue level

  Piece

  Miscellaneous Reports and Correspondence 1940. 12/7/1940 Report by F/Lt Card, Officer...

  Miscellaneous Reports and Correspondence 1940. 12/7/1940 Report by F/Lt Card, Officer Commanding IDM [Isle de St Marguerite] Station near Cannes, on the evacuation of IDM on 17 June. 9/7/1940 Report of W/T [wireless telegraphy] intelligence activitie…

  Held by

  The National Archives, Kew

  Date

  1940 Feb 24 - 1940 Dec 07

  Reference

  HW 66/1

• Catalogue level

  Piece

  Dossier on SIXTA. Historical notes on the development of WTI (analysis of enemy communications...

  Dossier on SIXTA. Historical notes on the development of WTI (analysis of enemy communications structure and activity) culminating in the establishment of the SIXTA Section at Bletchley Park, which concentrated primarily on German Army and Air Force …

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1945 Apr 30

  Reference

  HW 50/66

• Catalogue level

  Piece

  The Parties Dealing with Japanese Communications. Accounts of W.T.I. (communications...

  The Parties Dealing with Japanese Communications. Accounts of W.T.I. (communications analysis) and various studies of Japanese naval communications in support of cryptography, interception and the production of intelligence.

  Held by

  The National Archives, Kew

  Date

  1942 Jan 01-1945 Sep 06

  Reference

  HW 8/66

• Catalogue level

  Piece

  Decrypts of intercepted diplomatic communications. Afghanistan: 19160, 19176, 19193-19194,...

  Decrypts of intercepted diplomatic communications. Afghanistan: 19160, 19176, 19193-19194, 19278, 19292, 19325, 19372, 19385, 19412, 19425, 19445. Argentina: 19157, 19279, 19394. Belgium: 19168-19169, 19247, 19418, 19441. Brazil: 19367-19368. Chile: …

  Held by

  The National Archives, Kew

  Date

  1925 Jan

  Reference

  HW 12/66

• Catalogue level

  Piece

  Reports in the series VM/2001 to VM/2250.

  Reports in the series VM/2001 to VM/2250.

  Held by

  The National Archives

  Date

  1943 Jan 22-1943 Jan 24

  Reference

  HW 20/66

• Catalogue level

  Piece

  Paper by EWT or AD (S) on lessons learned since 1939 from Sigint operation at BP...

  Paper by EWT or AD (S) on lessons learned since 1939 from Sigint operation at BP with plan for a "perfect" Sigint organisation, Feb 2; EWT appoints Newman of RS to coordinate centralised research on special machinery for breaking cyphers Feb 1; EWT t…

  Held by

  The National Archives, Kew

  Date

  1943 Feb 1-10

  Reference

  HW 14/66

• Catalogue level

  Piece

  History of Japanese Traffic Analysis Section

  History of Japanese Traffic Analysis Section

  Held by

  The National Archives, Kew

  Date

  1942 May 01 - 1945 Aug 30

  Reference

  HW 43/66

• Catalogue level

  Piece

  Enemy exploitation of Naval WTI (wireless telegraphy intelligence): miscellaneous...

  Enemy exploitation of Naval WTI (wireless telegraphy intelligence): miscellaneous reports and correspondence

  Held by

  The National Archives, Kew

  Date

  1942 Sep 23 - 1943 Jul 02

  Reference

  HW 40/66

• Catalogue level

  Piece

  Commercial reports

  Commercial reports

  Held by

  The National Archives, Kew

  Date

  1940 Nov 25-1940 Nov 27

  Reference

  HW 29/66

• 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 Apr 19-1942 May 21

  Reference

  HW 18/66

• Catalogue level

  Piece

  Reports of decrypts of Japanese military attachés messages

  Reports of decrypts of Japanese military attachés messages

  Held by

  The National Archives, Kew

  Date

  1944 Nov 14-1944 Nov 19

  Reference

  HW 35/66

• Catalogue level

  Piece

  Foreign Intelligence: Polish

  Foreign Intelligence: Polish

  Held by

  The National Archives, Kew

  Date

  1929 Feb 01-1929 Jul 24

  Reference

  HW 2/66

• Catalogue level

  Piece

  74498-76765

  74498-76765

  Held by

  The National Archives, Kew

  Date

  1944 Jan 18-1944 Mar 17

  Reference

  HW 19/66

• Catalogue level

  Piece

  Introduction to series: summaries of reports relating to major daytime raids by Allied...

  Introduction to series: summaries of reports relating to major daytime raids by Allied Air Forces on targets in Western Europe and Germany

  Held by

  The National Archives, Kew

  Date

  1943 Dec 5-1944 Oct 22

  Reference

  HW 13/66

• Catalogue level

  Piece

  Outer defences of Leningrad reached from south, south east and east, Sept 13. German...

  Outer defences of Leningrad reached from south, south east and east, Sept 13. German armoured forces from north and south have almost encircled Kiev, Sept 14. Sitrep evening of Sept 14. 11th Army preparing for planned attack on Perekop; 1st Panzer Gr…

  Held by

  The National Archives, Kew

  Date

  1941 Sept 15

  Reference

  HW 1/66

• Catalogue level

  Piece

  Liaison between Special Communications Unit (SCU) and CBME

  Liaison between Special Communications Unit (SCU) and CBME

  Held by

  The National Archives, Kew

  Date

  1942 Sep 05 - 1944 Mar 07

  Reference

  HW 51/66

• Catalogue level

  Piece

  Soviet Comintern messages: ISCOT 1301-1400

  Soviet Comintern messages: ISCOT 1301-1400

  Held by

  The National Archives, Kew

  Date

  1945 June 28-1945 Aug 28

  Reference

  HW 17/66