Catalogue search results

Filters

Results

• Catalogue level

  Piece

  ISL from C PM's comments and Naval Headlines: instruction to U-boats' action to be...

  ISL from C PM's comments and Naval Headlines: instruction to U-boats' action to be taken against warships in specified area; ISL's response

  Held by

  The National Archives, Kew

  Date

  1941 Sept 5

  Reference

  HW 1/47

• Catalogue level

  Piece

  British supervision of Polish (London Government in exile and associated military...

  British supervision of Polish (London Government in exile and associated military and secret service) radio communications, including interception and code-breaking by GC&CS. 20/5/1944 C/6538 Foreign Office interest in the contents of W/T message…

  Held by

  The National Archives, Kew

  Date

  1942 Dec 11-1946 Jan 26

  Reference

  HW 47/4

• Catalogue level

  Piece

  Italian naval messages

  Italian naval messages

  Held by

  The National Archives, Kew

  Date

  1939 Feb 06-1939 Mar 14

  Reference

  HW 18/47

• Catalogue level

  Piece

  Security of electronic communications

  Security of electronic communications

  Held by

  Creating government department or its successor

  Date

  1954 Mar-1954 June

  Reference

  HW 9/47

• Catalogue level

  Piece

  Ministerial correspondence on GCCS pay

  Ministerial correspondence on GCCS pay

  Held by

  The National Archives, Kew

  Date

  1922

  Reference

  HW 3/47

• Catalogue level

  Piece

  Commercial reports

  Commercial reports

  Held by

  The National Archives, Kew

  Date

  1940 Aug 24-1940 Aug 31

  Reference

  HW 29/47

• Catalogue level

  Piece

  German Air Force. The RAF 'Y' Organisation in the Mediterranean January 1941 - January...

  German Air Force. The RAF 'Y' Organisation in the Mediterranean January 1941 - January 1944. An account of RAF Sigint operations in the Mediterranean area

  Held by

  The National Archives, Kew

  Date

  1941 Jan 01 - 1946 Apr 25

  Reference

  HW 50/47

• Catalogue level

  Piece

  Enemy exploitation of British Army codes and cyphers from miscellaneous sources....

  Enemy exploitation of British Army codes and cyphers from miscellaneous sources. Missing at transfer

  Held by

  The National Archives, Kew

  Date

  1943 Jan 01 - 1944 Dec 31

  Reference

  HW 40/47

• Catalogue level

  Piece

  London Poles, Stanmore, Middlesex, and the Russian Section at GC&CS 16/8/1940 Letter...

  London Poles, Stanmore, Middlesex, and the Russian Section at GC&CS16/8/1940 Letter from Col. Banakh of the Polish General Staff giving details of Soviet Army wireless communications and seeking financial and material support for the establishmen…

  Held by

  The National Archives, Kew

  Date

  1940 Nov 01-1941 Sep 02

  Reference

  HW 47/1

• Catalogue level

  Piece

  Series/3700 (Polish), reports on Polish diplomatic/military communications in Western...

  Series/3700 (Polish), reports on Polish diplomatic/military communications in Western Europe.

  Held by

  The National Archives, Kew

  Date

  1945 Nov 02-1946 Feb 25

  Reference

  HW 47/3

• Catalogue level

  Piece

  Mainly Romanian Special Service of Information reports on monitoring of suspected...

  Mainly Romanian Special Service of Information reports on monitoring of suspected agents and foreign (including British) nationals

  Held by

  The National Archives, Kew

  Date

  1949 Dec 28 - 1950 Jun 26

  Reference

  HW 75/47

• Catalogue level

  Piece

  Reports in the series QT/7251 to QT/7500.

  Reports in the series QT/7251 to QT/7500.

  Held by

  The National Archives

  Date

  1942 Nov 29-1942 Dec 01

  Reference

  HW 20/47

• 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 Jul 10-1944 Jul 15

  Reference

  HW 35/47

• Catalogue level

  Piece

  Italian Air Force: analysis of transport activity

  Italian Air Force: analysis of transport activity

  Held by

  The National Archives, Kew

  Date

  1942 Sept 1-1942 Dec 31

  Reference

  HW 21/47

• 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

  1944 Aug 01-1945 May 31

  Reference

  HW 52/47

• Catalogue level

  Piece

  Reports teleprinted from Malta to the Air Ministry and passed to the Government Code...

  Reports teleprinted from Malta to the Air Ministry and passed to the Government Code and Cypher school giving details of enemy air activity and the results of British air operations

  Held by

  The National Archives, Kew

  Date

  1943 Jan 01-1943 Mar 31

  Reference

  HW 41/47

• Catalogue level

  Piece

  Liaison between CBME and GC&CS on cryptographic matters, particularly Romanian cyphers

  Liaison between CBME and GC&CS on cryptographic matters, particularly Romanian cyphers

  Held by

  The National Archives, Kew

  Date

  1941 Dec 08 - 1944 Mar 02

  Reference

  HW 51/47

• Catalogue level

  Piece

  Admiralty Use of Special Intelligence in Naval Operations by Capt. G.E. Colpoys R.N.

  Admiralty Use of Special Intelligence in Naval Operations by Capt. G.E. Colpoys R.N.

  Held by

  The National Archives, Kew

  Date

  1939 Aug 23-1945 Apr 09

  Reference

  HW 8/47

• Catalogue level

  Piece

  GRU (Soviet Intelligence) Military Attaché Traffic: Moscow with London, United Kingdom....

  GRU (Soviet Intelligence) Military Attaché Traffic: Moscow with London, United Kingdom. (Described at item level)

  Held by

  The National Archives, Kew

  Date

  1947 Jan 1-1947 Mar 8

  Reference

  HW 15/47

• Catalogue level

  Piece

  Japanese naval decrypts

  Japanese naval decrypts

  Held by

  The National Archives, Kew

  Date

  1943 Nov 16-1943 Nov 18

  Reference

  HW 23/47