Editing MI5 (section)

=== Structure ===
The Security Service comes under the authority of the [[Home Secretary]] within the [[Cabinet of the United Kingdom|Cabinet]].<ref name=SSAct>{{Cite web|url=https://www.Legislation.gov.uk/ukpga/1989/5/section/1/enacted|title=Security Service Act 1989: The Security Service|website=www.Legislation.gov.uk|publisher=[[HM Government]]|access-date=27 August 2017}}</ref>  The service is headed by a Director General (DG) at the grade of a [[Permanent Secretary]] of the [[British Civil Service|Civil Service]], who is directly supported by an internal security organisation, secretariat, legal advisory branch, and information services branch.  The Deputy Director General is responsible for the operational activity of the service, being responsible for four branches; international counter-terrorism, National Security Advice Centre (counter proliferation and counter espionage), Irish and domestic counter-terrorism, and technical and surveillance operations.<ref>{{Cite web|url=https://www.MI5.gov.uk/people-and-organisation|title=People and organisation|website=www.MI5.gov.uk|publisher=MI5|access-date=21 November 2018}}</ref>

The service is directed for intelligence operational priorities by the Joint Intelligence Committee.<ref name=ISAct>{{Cite web|url=http://www.Legislation.gov.uk/ukpga/1994/13/contents|title=Intelligence Services Act 1994|website=www.Legislation.gov.uk|publisher=[[HM Government]]|access-date=27 August 2017}}</ref> It liaises with SIS, GCHQ, [[Defence Intelligence Staff|DI]], and a number of other bodies within the British government, and industrial base.  It is overseen by the Intelligence and Security Committee of Members of Parliament, who are directly appointed by the [[Prime Minister of the United Kingdom|Prime Minister]], and by the [[Investigatory Powers Commissioner]].<ref>{{Cite web|title=Investigatory Powers Commissioner establishes oversight regime|url=https://www.gov.uk/government/news/investigatory-powers-commissioner-establishes-oversight-regime|access-date=6 January 2021|website=GOV.UK|language=en}}</ref> Judicial oversight of the service's conduct is exercised by the [[Investigatory Powers Tribunal]].<ref>{{Cite web|url=http://www.IPT-UK.com/sections.asp?sectionID=22&type=top|title=What the Tribunal can investigate|website=www.IPT-UK.com|publisher=[[Investigatory Powers Tribunal]]|access-date=6 July 2014}}</ref>