File Title Enquiry by Sir Norman Brook into the Secret Intelligence and Security Services: Vice-Admiral Brooking's Report on Noise Listening
Reference CAB 301/22
Date 23 October 1950 - 27 December 1951
Government Department Cabinet Office
File Accession Date 23 May 2013


A file of correspondence and memoranda relating to a report by Sir Norman Brook into the state of the secret intelligence and security services, and in particular his recommendation that arrangements be made for "Noise Listening" (the monitoring of foreign and clandestine radio transmissions). Amongst the subjects discussed in this file are a report from Admiral Brooking examining the question of noise listening; the responsibility for controlling the collection of noise listening data; the organisation of the collection, including the necessary equipment and personnel; and possible collaborations with US intelligence services.

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