The Royal Marines School of Music is a professional training centre for musicians of the Royal Marines Band Service , the musical arm of the Royal Navy . Originally created at Portsmouth in 1930 , it moved to Deal in 1950 and in 1989 was still there as part of the Royal Marine Depot , Deal . Throughout the 1980s , the IRA had been waging a paramilitary campaign against targets in Britain and Northern Ireland with the stated aim of achieving the separation of Northern Ireland from the rest of the United Kingdom . These operations had included an attempt to kill the British Prime Minister Margaret Thatcher in 1984 and a similar attack on a military band in London in 1982
attempt to kill
Brighton hotel bombing
Deal barracks bombing