The General Service Medal (1962 GSM, also sometimes referred to as the Campaign Service Medal), is a campaign medal of the United Kingdom introduced in 1962 to replace both the General Service Medal (1918), as awarded to the Army and RAF, and the Naval General Service Medal (1915). The 1962 GSM was awarded until 2007, when it was replaced by the Operational Service Medal.

The Northern Ireland clasp was instituted for award to personnel involved in the various operations in Northern Ireland during The Troubles.The qualifying period is a minimum of 30 days' service between 14 August 1969 and 31 July 2007. The 30 days' did not have to be consecutive. Should the qualifying period be cut short due to injury or death, then the completed days are counted as sufficient for the award of this clasp.