Secret Intelligence Service definition
Secret Intelligence Service means the service continued under section 1 of the 1994 Act;
Examples of Secret Intelligence Service in a sentence
Information which has been supplied (whether to the person currently holding the information or to some other person) by— (a) the Security Service, (b) the Secret Intelligence Service, Expression Interpretation (c) GCHQ (which has the same meaning as in the Intelligence Services Act 1994), or (d) any part of Her Majesty’s forces, of the Ministry of Defence, or of the Police Service which engages in intelligence activities.
It soon split into a domestic and a foreign section which became Security Service and Secret Intelligence Service in due course.
The Secret Intelligence Service (SIS) deployed in Palestine and operated outside it to prevent Jewish refugees from reaching it.