A file of reports, correspondence, and memoranda exchanged between various departments of the British government and intelligence services during the Second World War, discussing the post-war size, role, and organisation of the British secret services. Subjects discussed in this file include Britain’s post-war strength, prestige, and economic clout; the post-war role and focus of the intelligence services; the retention of war-time intelligence personnel; the funding of the intelligence services in peace-time; areas of particular interest, such as scientific intelligence; potential threats to Britain; the creation of cover identities and organisations for post-war intelligence operations; the cultivation of links with influential foreign citizens, to be exploited in the future; post-war security and counter-espionage; cooperation between different branches and departments of the intelligence services; and problems with the organisation of the secret services, such as the duplication of work in different departments.