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
Brixton Prison IRA escape 1991 remaining seven managed to cross the border into the Republic of Ireland and appeared at a press conference in Dublin. On 17 January 1972, seven internees escaped from the prison ship HMS "Maidstone" by swimming to freedom, resulting in them being dubbed the "Magnificent Seven". On 31 October 1973, three leading IRA members, including former Chief of Staff Seamus Twomey, escaped from Mountjoy Prison in Dublin when a hijacked helicopter landed in the exercise yard of the prison. Irish band The Wolfe Tones wrote a song celebrating the escape called "The Helicopter Song", which topped the Irish popular music charts.