Law enforcement in Ireland

This is a description of law enforcement in Northern Ireland and the Republic of Ireland. Before the Republic (then called the Irish Free State) left the union in 1922, one police force — the Royal Irish Constabulary — policed almost the whole island (aside from Dublin, where the Dublin Metropolitan Police were the main force; Belfast, where the Belfast Borough Police were the main force; and the borough of Londonderry, where the Londonderry Borough Police were the main force before merging with the RIC).

Source: Wikipedia — Law enforcement in Ireland (CC BY-SA 4.0)