The U.K. Secret Intelligence Service (SIS) (MI-6) is responsible for supplying the British Government with foreign intelligence. Alongside the internal Security Service (MI-5), the Government Communications Headquarters (GCHQ) and the Defence Intelligence Staff (DIS), it operates under the formal direction of the Joint Intelligence Committee (JIC).
SIS has access to GCHQ information and DIS military intelligence. Its Current Intelligence Groups also report to Government Departments and Military Commands in the weekly Red Book. The SIS receives direction from the JIC — unlike MI5, SIS is "tasked."
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