Dublin Metropolitan Police

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Irish Police forces
Royal Irish Constabulary. (All Ireland police force 1822—1922)
Royal Irish Constabulary. (All Ireland police force 1822—1922)
Dublin Metropolitan Police
(1836—1925).
An Garda Síochána (Republic of Ireland 1922—present)
An Garda Síochána (Republic of Ireland 1922—present)
Royal Ulster Constabulary (Northern Ireland 1922—2001)
Royal Ulster Constabulary (Northern Ireland 1922—2001)


The Dublin Metropolitan Police (DMP) was the police force of Dublin, Ireland, from 1836 to 1925, when it amalgamated into the new Garda Síochána.

Rural policing in Ireland began when Robert Peel, then Chief Secretary for Ireland, created the Peace Preservation Force in 1816. This rudimentary paramilitary police force was designed to provide policing in rural Ireland, replacing the 18th century system of watchmen, baronial constables, revenue officers and British military forces. Peel went on to found the London Metropolitan Police.

In 1822, a new Act created four improved "County" Constabularies, whose organisation was based around the traditional provinces of Ireland.

These were merged into a new centralised Constabulary of Ireland, in 1836 and the Peace Preservation Force ceased to exist. At the same time separate non-paramilitary forces were set up in the larger towns: Dublin, Belfast, and Londonderry. Discipline problems saw the Belfast and Derry forces absorbed by the national force, and only Dublin maintained its separate force.

The DMP was modelled closely on the London Metropolitan Police. Not only were the uniforms of the two forces almost indistinguishable, especially after the helmet and Bath Star were adopted, but the two forces also had a similar organisational structure; rather than a Chief Constable, they were commanded by a Commissioner, who was not a police officer, but a magistrate holding a Commission of the Peace. This was descended from the 18th century system of controlling parish constables, and was a sop to the public's fears about the danger of a standing police force under government control.

The DMP did not take the side of the British in the War of Independence as actively as did the RIC, and as such did not suffer the casualty rate of that force, apart from the political "G" Division. Selected "G men" were first warned by the IRA in April 1919, and the first was shot in July. Many DMP officers actively assisted the IRA, most famously Edward Broy, who passed valuable intelligence to Michael Collins throughout the conflict.

In the 1996 film Michael Collins, Broy is discovered and subsequently tortured and killed by the British. In reality he was not caught and went on to become the Commissioner of An Garda Síochána in the 1930s.

After the creation of Saorstat Éireann, the DMP became known as "Políní Átha Cliath" from 1922-1925, after which the force ceased to exist as a separate entity, and was absorbed into the Garda Síochána. "Dublin Metropolitan" is today a geographic region of the Garda Síochána's command structure.

In common with police forces on the island of Great Britain, the DMP was an unarmed force. In this, it provided the inspiration for the first Commissioner of An Garda Síochána, who declared that the new force should also be unarmed.


As part of the United Kingdom of Great Britain and Ireland

Ireland - Royal Irish Constabulary

Ireland (Dublin) - Dublin Metropolitan Police


After the Partition of Ireland

Irish Republic - Irish Republican Police

Northern Ireland - Ulster Special Constabulary

Northern Ireland - Royal Ulster Constabulary


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