Larry Marley to come to fruition, he joined the blanket protest in the Maze's H-Blocks for four years. In September 1983, he helped Brendan McFarlane, Bobby Storey and Gerry Kelly to orchestrate the successful mass escape of 38 republican prisoners from the Maze. It was the largest prison escape in British penal history. According to a BBC documentary about the escape, Marley was the mastermind, having come up with the idea with the aim of embarrassing British Prime Minister Margaret Thatcher, as the Maze was considered to be one of the world's most secure prisons. Marley, unlike his three co-conspirators, did not
Maze Prison escape encompassed by an concrete wall topped with barbed wire, and all gates on the complex were made of solid steel and electronically operated. Prisoners had been planning the escape for several months. Bobby Storey and Gerry Kelly had started working as orderlies in H7, which allowed them to identify weaknesses in the security systems, and six handguns had been smuggled into the prison. Shortly after 2:30 pm on 25 September, prisoners seized control of H7 by simultaneously taking the prison officers hostage at gunpoint in order to prevent them from triggering an alarm. One officer was stabbed with a craft