In July 1972, William Whitelaw, the British government's Secretary of State for Northern Ireland, granted Special Category Status (SCS) to all prisoners convicted of Troubles-related offences. This had been one of the conditions set by the Provisional IRA when they negotiated a meeting with the British Government to discuss a truce.
Special category (or "political") status was de facto prisoner of war (POW) status, providing them with some of the privileges of POWs, such as those specified in the Geneva Convention. This meant prisoners did not have to wear prison uniforms or do prison work, were housed within their paramilitary factions, and were allowed extra visits and food parcels.
In January 1975 the Gardiner Committee, which looked at how the British Government should deal with "terrorism and subversion in Northern Ireland" in the "context of civil liberties and human rights", recommended the ending of SCS. It argued that SCS undermined the role of the prison authorities in maintaining discipline. The response of some prisoners to this was violent, and six prison staff were killed in the period 1976-77.
The Government accepted the recommendation and on 1 March 1976, the new Labour Secretary of State Merlyn Rees announced the phasing out of SCS. Anyone convicted of a scheduled offence after March 1976 would be treated as an ordinary criminal and would have to wear a prison uniform, do prison work and serve their sentence in the new Maze Prison, in what became known as the H-Blocks.
By late 1976, the new cellular prison accommodation recommended by Gardiner was ready to receive its first prisoners. In the week that Roy Mason took over from Merlyn Rees as Secretary of State, the first prisoner sentenced under the new policy, Kieran Nugent, arrived at the Maze Prison and was ordered to wear a prison uniform.