At the beginning of the twentieth century, the British Labour Party was broadly supportive of Irish home rule. However, from the end of the First World War, Labour anticipated a place in government, and as a modern, maturing party in British politics, it developed a more calculated set of responses towards Ireland. With contributions from a range of distinguished Irish and British scholars, this collection of essays provides the first full treatment of the historical relationship between the Labour Party and Ireland in the last century, from Keir Hardie to Tony Blair. By widening the lens on Labour’s responses to the ‘Irish question’ over an entire century, it offers an original perspective on longer-term dispositions in Labour mentalities towards Ireland and on the relationship between ‘these islands’. It will prove essential reading for those with an interest in modern Irish and British history, Anglo-Irish relations, and the current Northern Ireland peace process.