0089

File Title War Cabinet. JIC (40). Confidential Annexes
Reference CAB 81/89
Date 1940
Government Department Cabinet Office
File Accession Date 1970

Description

A volume of meeting minutes of the Joint Intelligence Sub-Committee (JIC). The JIC was formed of representatives from the intelligence services, the armed services, and the Foreign Office. Its purpose was to assess military, security, and foreign policy requirements and coordinate Britain’s intelligence organisations accordingly. The JIC members discussed a vast range of international and domestic issues in their meetings. In this file, subjects documented include methods of deceiving the enemy, including rumours and troop movements; security and liaison plans for the Norwegian Campaign, including cover plans and arrangements for liaison with the local government and civilian population; plans for the gathering of naval intelligence; methods of disrupting enemy communications by cutting undersea cables; and the monitoring of telephone communications between the United Kingdom and Ireland.

Document Title Date
i War Cabinet. JIC (40). Confidential Annexes 1940 Download PDF (1.22 MB)
iii Table of Contents 1940 Download PDF (872 KB)
4th Security Measures; Inter-Service Security Board; Measures to Prevent, Leakages of Information; Measures to Deceive the Enemy 1940 Download PDF (1.51 MB)
7th Security of Plans; Report by Inter-Services Security Board; Measures to Deceive the Enemy; Proposals for Action in the Middle East; Information for Dominion Prime Ministers; Future Arrangements 20 February 1940 Download PDF (1.57 MB)
8th Report by the Inter-Services Security Board; Preparation for the Reception of Transports in the Middle East; Proposed Move of an R.A.F. Squadron from Aden; Despatch of Liaison Officers to the Middle East and the British Expeditionary Force; Security Measures on Arrival of the Expedition 26 February 1940 Download PDF (1.52 MB)
10th Third Report by the Inter-Services Security Board; Security Measures on Arrival of the Expedition; Relations with the Local Inhabitants on Arrival of the Expedition 29 February 1940 Download PDF (2.01 MB)
12th Fourth Report by the Inter-Services Security Board; Press Publicity for the Middle-East Cover; Publicity on Arrival of the Expedition; Security Measures on Arrival of the Expedition; Political Officers with Each Force; Wider Aspects of Security; Establishment of a Permanent Inter-Services Security Board 6 March 1940 Download PDF (4.12 MB)
13th Progress Report by the Inter-Services Security Board; Security Measures on the Arrival of the Expedition; Political Officers with Each Force; Publicity on Arrival of the Expedition; Possibility of Sabotage by the Enemy; Enemy Mobile W/T. Transmitter; Further Action by the Security Board 13 March 1940 Download PDF (2.10 MB)
14th Progress Report by the Inter-Services Security Board; Action as the Result of the Discontinuation of Certain Operations; Indications as to Enemy Knowledge of Our Plans; Special Measures to Prevent Leakages of Information 15 March 1940 Download PDF (2.16 MB)
51st Security for Certain Operations 17 July 1940 Download PDF (637 KB)
52nd The Importance of Obtaining Information Regarding Naval and Shipping Movements in Algerian, Moroccan and South French Ports; Supply of Intelligence from Enemy and Enemy Occupied Territory 22 July 1940 Download PDF (1.28 MB)
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