MI 6's Requirements Directorate: Integrating Intelligence into the Machinery of British Central Government

The following article examines the relationship between the British Secret Intelli-gence Service (SIS, a.k.a. MI 6) and the machinery of central government, particularly departments of state and other agencies which employ information generated by the SIS. It is argued the main link between the SIS and its consumers in British government is the SIS's requirements 'side', embodied throughout most of the post-war era in the form of a Requirements Directorate. The article argues that the Requirements mechanism operates as a line of communication between the SIS and its consumers separate from the Cabinet Office Joint Intelligence Organisation (JIO), although there is overlap and interdependency between the two architectures. This discussion traces the development of the 'requirements side' from the interwar period up to the post-Cold War era using information from archival sources and a programme of interviews with former UK intelligence officials. It is further argued that the structure and process of the SIS 'requirements side' has developed and changed as a consequence of changes in the structure of demand in the machinery of British government, including adapting to the increasingly central role of the JIO. However, despite that increasingly central role of the JIO, the 'requirements side' has continued to serve as the first point of contact between the SIS and its customers in Whitehall.