These are basic problems for all intelligence services.In the 1930s and 1940s it was considered the most effective intelligence service in the world.Another branch of British intelligence system is MI-5.National intelligence organizations.The Intelligence Services Act 1994.At issue in most of the debates are questions of power, probability, and time.Information as to how these services address their problems is highly uneven.MI-6 is responsible for the conduct of espionage activities outside British territory.Details of MI-6 operations and relationships seldom appear in the British press.The director of the Security Service reports to the prime minister through the home secretary.