This series contains registered files from various offices.
From the Director-General of Intelligence (DGI), later (1984) Chief of Defence Intelligence (CDI), and his deputy (until 1984), the Deputy Chief of Defence Staff (Intelligence) (DCDS(I)).
From the Directorate of Management and Support of Intelligence (DMSI) which was responsible, from 1964-82 and from 1984-88, for the general organisation and administration of the Defence Intelligence Staff (DIS), for the co-ordination of DIS policy concerning intelligence collection and resource allocation, and for DIS support functions both within and outside the MOD Central Staffs (during the period 1982-84 the post of DMSI was dis-established and the Directorate split into two Deputy Directorates, the Deputy Directorate of Intelligence (Collection), responsible to the newly-created post of Assistant Chief of Defence Staff (Intelligence) (ACDS(I)), and the Deputy Directorate of Intelligence (Administration and Security) responsible to either DGI or ACDS(I) depending on the topic).
From the DIS Secretariat (or Central Staff or Central Secretariat) charged with providing general staff support to DGI/CDI and DCDS(I) and acting as a focal point for requests to the DIS on substantive intelligence business and in this respect acting as a front office for the DIS as a whole.