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  General records of the Government Code and Cypher School

  href="HW-d1-c49">HW 49; Papers on writing of the history of British signals intelligence HW 50; Papers relating to comsec editing of Winston Churchill's 'The Second World War'

  Held by
  Date
  1914-1979
  Reference

• Catalogue level

  Piece

  Memorandum by de Grey of 17 August 1949. Includes incomplete copy of covering letter...

  Memorandum by de Grey of 17 August 1949. Includes incomplete copy of covering letter and photograph of Nigel de Grey. An incisive and hard-hitting survey of the over-all organisation of GC&CS and of British Sigint in general during World War II w…

  Held by

  The National Archives, Kew

  Date

  1939 Sep 01 - 1949 Aug 17

  Reference

  HW 50/50

• Catalogue level

  Series

  Government Code and Cypher School and Government Communications Headquarters: Records...

  This series contains records produced during the production of the History of British Signals Intelligence in World War II (now preserved in HW 11).

  Held by

  The National Archives, Kew

  Date

  1914-1954

  Reference

  HW 50

• Catalogue level

  Item

  Stockholm; 1. Intelligence via PER from a Swedish airman Stockholm; 2. Naval intelligence...

  Stockholm; 1. Intelligence via PER from a Swedish airman Stockholm; 2. Naval intelligence from VALER.

  Held by

  The National Archives, Kew

  Date

  1942 June 24

  Reference

  HW 15/50/50

• Catalogue level

  Piece

  Intelligence - Use and Handling of German Army and Air Force High-grade. Notes on...

  Intelligence - Use and Handling of German Army and Air Force High-grade. Notes on the use of ENIGMA intelligence in 'BMP' reporting on German air defences and fighter reaction in support of Allied bombing operations. Also notes on signals between GC&…

  Held by

  The National Archives, Kew

  Date

  1941 Jul 01 - 1944 Nov 26

  Reference

  HW 50/58

• Catalogue level

  Piece

  Liaison between Berkeley Street and Washington. Mainly correspondence on crypt matters

  Liaison between Berkeley Street and Washington. Mainly correspondence on crypt matters

  Held by

  The National Archives, Kew

  Date

  1945 Jan 02 - 1945 Aug 11

  Reference

  HW 53/50

• Catalogue level

  Piece

  Catalogue of Party Histories and Other Supporting Papers Prepared for the GC&CS Histories....

  Catalogue of Party Histories and Other Supporting Papers Prepared for the GC&CS Histories. List of the various histories to be written with key topics

  Held by

  The National Archives, Kew

  Date

  1914 Aug 01 - 1945 Aug 31

  Reference

  HW 50/3

• Catalogue level

  Piece

  BRUSA [British-US Sigint Communications network in the Far East] and Negotiations...

  BRUSA [British-US Sigint Communications network in the Far East] and Negotiations with America, Autumn 1943 to mid-October 1944. These notes cover relations with the US Navy on Sigint collection, crypt processing and reporting against the Japanese na…

  Held by

  The National Archives, Kew

  Date

  1943 Nov 07 - 1944 Nov 21

  Reference

  HW 50/12

• Catalogue level

  Piece

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

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

  Held by

  The National Archives, Kew

  Date

  1944 Feb 12 - 1945 Apr 04

  Reference

  HW 40/50

• Catalogue level

  Piece

  GC&CS Administration (building programme, maintenance, welfare and medical, transport,...

  GC&CS Administration (building programme, maintenance, welfare and medical, transport, billeting, administration, requisitioning of WRNS quarters, WRNS outstations). Notes with references to original files

  Held by

  The National Archives, Kew

  Date

  1939 Oct 26 - 1945 Sep 30

  Reference

  HW 50/6

• Catalogue level

  Piece

  Japanese Naval Cyphers and Ransuuban. Historical notes on the introduction by the...

  Japanese Naval Cyphers and Ransuuban. Historical notes on the introduction by the Japanese Navy of a new regionally allocated strip key cypher (Ransuuban)

  Held by

  The National Archives, Kew

  Date

  1944 Nov 01 - 1945 Aug 05

  Reference

  HW 50/73

• Catalogue level

  Piece

  Dossiers on Cheadle and Outstations. Historical notes and personnel statistics on...

  Historical notes and personnel statistics on RAF Cheadle, the intercept station responsible for interception and reporting on German Air Force activity (see also HW 2)

  Held by

  The National Archives, Kew

  Date

  1927 Feb 26 - 1944 Sep 30

  Reference

  HW 50/84

• Catalogue level

  Piece

  Criticisms of GC&CS Notes with source references on external and internal criticism...

  Criticisms of GC&CS Notes with source references on external and internal criticism of GC&CS Service dissatisfaction, Naval Section criticism concerning difficulties in obtaining staff, miscellaneous criticism by Admiralty

  Held by

  The National Archives, Kew

  Date

  1939 Dec 16 - 1947 Feb 22

  Reference

  HW 50/18

• Catalogue level

  Piece

  RAF Y France 1939-1940. AASF [Advanced Air Strike Force] Y Section Organisation and...

  AASF Y Section formed Cheadle September 1939; arrived Fismes (Marne) 17/9/1939 with intercept, crypt and WTI (analysis) in support of AASF (AOC AVM Playfair) and D/F stations at Breteuil (south of Amiens) and Bar-sur-Seine; 20/1/1940 at Lira; May 194…

  Held by

  The National Archives, Kew

  Date

  1939 Sep 14 - 1941 Apr 03

  Reference

  HW 50/46

• Catalogue level

  Piece

  Manual of Military Intelligence in the Field: Pamphlet No 5, 1939. Manual on conduct...

  Manual of Military Intelligence in the Field: Pamphlet No 5, 1939. Manual on conduct of Sigint in the field

  Held by

  The National Archives, Kew

  Date

  1939 Jan 01 - 1939 Dec 31

  Reference

  HW 50/41

• Catalogue level

  Piece

  Middle East and North Africa - CBME [Combined Bureau Middle East]. Notes, extracts...

  Middle East and North Africa - CBME [Combined Bureau Middle East]. Notes, extracts and dossier apparently collected for historical purposes. Dossier of evidence from CBME files, GC&CS miscellaneous papers and Middle East 'Y' Boards and Committee …

  Held by

  The National Archives, Kew

  Date

  1924 Mar 01 - 1945 Apr 19

  Reference

  HW 50/30

• Catalogue level

  Piece

  Estonian Liaison. Specimen mailing of traffic, known as 'Waddington Special' between...

  'Waddington Special' appears to be Estonian intercept of Russian naval and military communications, forwarded on to GC&CS by Warrant Officer W G Swanborough, who made an initial liaison visit to Estonia in 1931 (see also HW 61/47 and 48)

  Held by

  The National Archives, Kew

  Date

  1932 Sep 27 - 1933 Nov 01

  Reference

  HW 61/50

• Catalogue level

  Piece

  Army and Air Force Sigint Organisation for Western Front (chronological summaries...

  Army and Air Force Sigint Organisation for Western Front (chronological summaries of Q/2006, Q/2007, Q/2045 and of various 'Q' and MI8 records). Notes on preparations, June 1942 - June 1944; organisational changes of the GC&CS sections after D-Da…

  Held by

  The National Archives, Kew

  Date

  1942 Jun 14 - 1945 Apr 30

  Reference

  HW 50/32

• Catalogue level

  Piece

  Japanese Naval Section, Autumn 1943 to Autumn 1944. Gists/extracts (with source references)...

  Japanese Naval Section, Autumn 1943 to Autumn 1944. Gists/extracts (with source references) of main events with notes and additions by Birch

  Held by

  The National Archives, Kew

  Date

  1943 Oct 26 - 1944 Nov 27

  Reference

  HW 50/17

• 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