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- Catalogue level
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General records of the Government Code and Cypher School
GC&CS ADMINISTRATION: Establishments records HW 64.RESEARCH SECTION: Weekly reports, memoranda and minutes HW 78.
- Held by
- Date
- 1914-1979
- Reference
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- Catalogue level
- Series
Government Code and Cypher School: Research Section: Memoranda, Minutes and Weekly...
Reports made on a weekly basis by the Research Section and memoranda including notes on German diplomatic code and traffic received.Minutes of meetings of the Directing Sub-Committee of the Research Section.
- Held by
- The National Archives, Kew
- Date
- 1941-1944
- Reference
- HW 78
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- Catalogue level
- Piece
Bletchley Park recreational club
Bletchley Park recreational club
- Held by
- The National Archives, Kew
- Date
- 1942 Oct 01 - 1944 Mar 31
- Reference
- HW 64/78
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- Catalogue level
- Piece
Commercial reports
Commercial reports
- Held by
- The National Archives, Kew
- Date
- 1941 Feb 19-1941 Feb 28
- Reference
- HW 29/78
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- Catalogue level
- Piece
Foreign Office instructions for monitoring sick leave and stated procedures for other...
Foreign Office instructions for monitoring sick leave and stated procedures for other health related matters
- Held by
- The National Archives, Kew
- Date
- 1944-1945
- Reference
- HW 3/78
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- 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
- 1945 Jan 17-1945 Jan 21
- Reference
- HW 35/78
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- Catalogue level
- Piece
Italian Air Force: Radiotelephone (R/T) reports
Italian Air Force: Radiotelephone (R/T) reports
- Held by
- The National Archives, Kew
- Date
- 1943 Feb 27-1943 Oct 25
- Reference
- HW 21/78
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- Catalogue level
- Piece
Allied Sigint Policy and Organisation by Nigel de Grey. Chapter VII India and the...
Allied Sigint Policy and Organisation by Nigel de Grey. Chapter VII India and the Far East (pages 1-119); Chapter VIII, Part I Australia (1-49), Part II New Zealand (pages 54), Part III Canada (pages 55-73); Chapter IX The American Alliance (pages 1-…
- Held by
- The National Archives, Kew
- Date
- 1914 Aug 01-1945 Aug 30
- Reference
- HW 43/78
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- Catalogue level
- Piece
London Controlling Section (LCS): mostly correspondence with Special Communications...
London Controlling Section (LCS): mostly correspondence with Special Communications Unit (SCU), New Delhi
- Held by
- The National Archives, Kew
- Date
- 1944 Jun 07 - 1945 Feb 21
- Reference
- HW 40/78
-
- Catalogue level
- Piece
Summary of Ingot Report Nos 1-23, communications of GP special SD reconnaissance...
Summary of Ingot Report Nos 1-23, communications of GP special SD reconnaissance detachments or"booty hunters." Contains decrypts of messages associated with the GP special battalion established by Ribbentrop to collect prize booty from occupied coun…
- Held by
- The National Archives, Kew
- Date
- 1942 Oct 23
- Reference
- HW 16/78
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- Catalogue level
- Piece
Decrypts of intercepted diplomatic communications. Afghanistan: 22068, 22081, 22135,...
Decrypts of intercepted diplomatic communications. Afghanistan: 22068, 22081, 22135, 22239, 22248, 22259-22262, 22275. Belgium: 22053. Brazil: 22157. Columbia: 22181. Egypt: 22123, 22149-22150. France: 22052, 22102-22104, 22112, 22121-22122, 22143, 2…
- Held by
- The National Archives, Kew
- Date
- 1926 Jan
- Reference
- HW 12/78
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- Catalogue level
- Piece
Security of information derived from intercepted and decrypted enemy messages known...
Security of information derived from intercepted and decrypted enemy messages known as Y material
- Held by
- The National Archives, Kew
- Date
- 1941 Jul 15 - 1944 Mar 01
- Reference
- HW 51/78
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- Catalogue level
- Piece
Location of addresses in Japanese military decrypts
Location of addresses in Japanese military decrypts
- Held by
- The National Archives, Kew
- Date
- 1945 Jan 08-1945 Mar 18
- Reference
- HW 52/78
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- Catalogue level
- Piece
Japanese naval decrypts
Japanese naval decrypts
- Held by
- The National Archives, Kew
- Date
- 1944 Jan 27-1944 Jan 28
- Reference
- HW 23/78
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- Catalogue level
- Piece
Notes on ISSIS [Inter-Service Special Intelligence School] and Japanese NS [Naval...
Notes on ISSIS [Inter-Service Special Intelligence School] and Japanese NS [Naval Section] Linguists and Courses. Historical notes on the training of linguists (mainly in Japanese) at the ISSIS in Bedford
- Held by
- The National Archives, Kew
- Date
- 1940 Oct 16 - 1945 Nov 10
- Reference
- HW 50/78
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- Catalogue level
- Piece
N.S.IIIJ Memorandum 1-9. Intelligence and technical notes in support of the watch...
N.S.IIIJ Memorandum 1-9.Intelligence and technical notes in support of the watch keepers charged with current intelligence reporting on the Japanese Navy.
- Held by
- The National Archives, Kew
- Date
- 1943 Dec 01-1944 Mar 26
- Reference
- HW 8/78
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- Catalogue level
- Piece
Signals containing results of interrogations by counter intelligence officers of...
Signals containing results of interrogations by counter intelligence officers of suspected enemy collaborateurs and agents
- Held by
- The National Archives, Kew
- Date
- 1944 Jan 01-1945 Jan 31
- Reference
- HW 41/78
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- Catalogue level
- Piece
Reports in the series VM/5001 to VM/5250.
Reports in the series VM/5001 to VM/5250.
- Held by
- The National Archives
- Date
- 1943 Feb 26-1943 Mar 01
- Reference
- HW 20/78
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- 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
- 1944 Apr 22-1944 Jun 28
- Reference
- HW 18/78
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- Catalogue level
- Piece
PS Milner-Barry to deputise for WG Welchman as Head of Hut 6 June 1, Milner-Barry...
PS Milner-Barry to deputise for WG Welchman as Head of Hut 6 June 1, Milner-Barry and Welchman to exchange rooms, first edition of Breaking Possibilities by Hut 6 Research Party June 1 giving state of exploitation of German keys, Welchman to EWT on s…
- Held by
- The National Archives, Kew
- Date
- 1943 June 1-10
- Reference
- HW 14/78