File Title Enquiry by Sir Norman Brook into the Secret Intelligence and Security Services: Papers Relating to Report on the Security Service (MI5)
Reference CAB 301/20
Date 20 June 1950 - 11 March 1952
Government Department Cabinet Office
File Accession Date 23 May 2013
Notes A document within this file has been retained under Section 3(4) of the Public Records Act, 1958.


A file of reports, correspondence, meeting minutes and memoranda giving a comprehensive overview of the organisation and role of the state of the secret intelligence and security services in the early stages of the Cold War. Topics of discussion in this file include ministerial responsibility for the intelligence services; the organisation of the intelligences services, including the division of roles between them; reports on communist activity in Britain, its potential threat, and the danger of crypto-communists; liaison with foreign intelligence services; counter-espionage activities, including a discussion of the problems associated with this area of work, and a statistical summary of British counter-espionage work since the Second World War; and a report on yearly government expenditure on the intelligence services.

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