MI5 T Branch

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T Branch of MI5 was created in 1990 with responsibility for Irish counter-terrorism.[1] It is also responsible for other forms of domestic terrorism.[2]

Organisation

Directors

Sections

T1

Prepared the case for the transfer of responsibility for republican terrorism from Metropolitan Police Special Branch in 1991.[6]

T2

Responsible for Irish Terrorism in Great Britain.[7]

  • Eliza Manningham-Buller - First head of T2[8] 1992-93[9]
  • T2A: Republican and loyalist terrorism in Great Britain.
  • T2A/11 David Shayler, August 1992-October 1994.[10]
  • T2B: Liaison with local Special Branches and agent runners responsible for investigating Irish terrorism in Great Britain.
  • T2C: Threat assessment for Irish terrorist groups.
  • T2D: Researches Irish terrorist groups.
  • T2E: Liaises with Metropolitan Police Special Branch, based at Scotland Yard.[11]

T5

  • T5/0 Stephen Lander, c. 1991.[12]
  • T5B: Investigates arms trafficking
  • T5C: Counters Irish terrorism in Continental Europe, including the Republic of Ireland.
  • T5D: Irish terrorism in the rest of the world.
  • T5E: Studies terrorist logistics
  • Annie Machon Ran T5E desk, August 1993-August 1995.[13]

T8

  • T8: T Branch agent-runners, includes a Northern Ireland-based section.[14] Previously known as F8.[15]

Other T Branch officers

Agents

Notes

  1. ↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.772.
  2. ↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, pp.863-864.
  3. ↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.775.
  4. ↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.786.
  5. ↑ New Director General appointed, Security Service, 28 March 2013.
  6. ↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.773.
  7. ↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.776.
  8. ↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.776.
  9. ↑ Mark Hollingsworth and Nick Fielding, Defending the Realm: Inside MI5 and the War on Terrorism, André Deutsch, 1993, p.290.
  10. ↑ Bloody Sunday Inquiry Reports: Week 90, 6-9 May 2003, British Irish Rights Watch, accessed 7 November 2009.
  11. ↑ Mark Hollingsworth and Nick Fielding, Defending the Realm: Inside MI5 and The War on Terrorism, André Deutsch, 2003, pp.320-321.
  12. ↑ Christopher Andrew, Defence of the Realm, The Authorized History of MI5, Allen Lane, 2009, p.772.
  13. ↑ Bloody Sunday Inquiry Reports: Week 90, 6-9 May 2003, British Irish Rights Watch, accessed 7 November 2009.
  14. ↑ Mark Hollingsworth and Nick Fielding, Defending the Realm: Inside MI5 and The War on Terrorism, André Deutsch, 2003, pp.320-321.
  15. ↑ Bloody Sunday Inquiry Reports: Week 90, 6-9 May 2003, British Irish Rights Watch, accessed 7 November 2009.
  16. ↑ Mark Hollingsworth, Second MI5 officer attacks security service, The Guardian, 22 July 2000.
  17. ↑ Mark Hollingsworth and Nick Fielding, Defending the Realm: Inside MI5 and the War on Terrorism, André Deutsch, 1993, p.145.