Lord Robert Armstrong, cabinet secretary under Mrs Thatcher and one of  key negotiators of the  agreement,  at an event marking the agreement’s 30th anniversary in  Trinity College Dublin last November. Photograph: Eric Luke

During the framing of the historic Anglo-Irish Agreement of November 1985, Garret FitzGerald took the opportunity of a joint meeting in Lisbon to comp(...)

Garret FitzGerald shakes hands with  Margaret Thatcher during talks in November 1985. Photograph: Pat Langan

Margaret Thatcher’s cabinet secretary, Sir Robert Armstrong, confided to the Irish ambassador Noel Dorr that before the 1983 election, she had “very m(...)

Lord Gowrie (centre) speaks in Dublin at the National Museum, alongside Charles  Haughey and  Dr Pat Wallace

Irish diplomats were warned by a member of Margaret Thatcher’s cabinet about blanket eavesdropping on their communications with Dublin during the talk(...)

Gerry Adams: Sinn Féin leader had distributed a questionnaire to IRA prisoners asking for “details of ill treatment”. Photograph: Pat Langan

The use of the Irish language in the Maze prison caused a major headache for the Northern Ireland Office in the early 1980s, according to previously c(...)