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The Rest Is Classified
The Rest Is Classified

150. Britain’s Man Inside the IRA: How To Run a Killer (Ep 2)

April 22, 2026 • 48m

Summary

⏱️ 9 min read

Overview

This episode explores how the British security forces recruited and ran agents during the Northern Ireland conflict, with particular focus on how the IRA's number two in internal security, known as 'steak knife,' became a high-level British informant despite being directly involved in interrogating and executing suspected informers. The episode examines the operational and moral complexities of running an agent who was simultaneously committing murders while providing intelligence.

The British Security Architecture in Northern Ireland

The episode opens by establishing the complex web of British security organizations operating in Northern Ireland during the late 1970s and early 1980s. The RUC (Royal Ulster constabulary) police force had primacy but lacked resources for large-scale intelligence operations. The British Army effectively operated independently with greater resources, while MI5 played only a supporting role, primarily installing bugging devices rather than running agents directly. This fragmented structure created significant inter-agency tensions that would complicate intelligence operations throughout the conflict.

  • The RUC Special Branch was tasked with intelligence collection but was seen as close to the Protestant community, making it harder to recruit Catholic agents
  • Northern Ireland was the most dangerous place in the world to be a police officer in 1983, with twice the risk of El Salvador
  • MI5's role was limited to supporting the RUC and Army, primarily installing bugging devices and covert cameras
  • The Army was the main focus for running agents through military intelligence, not MI5 as many would expect
" Northern Ireland was the most dangerous place in the world to be a police officer. The risk was twice as high as El Salvador, which was the second most dangerous place at the time. "

The Creation of the Force Research Unit

Following major IRA attacks in 1979, including the killing of Lord mountbatten and 18 soldiers, Margaret thatcher pushed for intensified intelligence operations. This led to the creation of the Force Research Unit (FRU) in the early 1980s, a centralized military intelligence unit with the motto 'fishers of men.' The FRU would operate until 1995 and run over 100 agents, representing a significant escalation in the British Army's intelligence gathering capabilities during the troubles.

  • 1979 saw major IRA attacks including Lord mountbatten's killing and an ambush that killed 18 soldiers
  • Margaret thatcher recalled former MI6 head maurice oldfield as security coordinator, the model for George smiley
  • The Force Research Unit (FRU) was created with the motto 'fishers of men' and would run over 100 agents
  • The FRU operated from 1980 until 1995 as the centralized intelligence gathering section of the British Army

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