John de Courcy Ireland was, amongst others, Secretary of the Central Branch of the Labour Party, and was involved in numerous progressive organisations. He had a distinguished and lifelong commitment to Irish and international maritime history and affairs, to radical politics and to humanism. He and his wife, Betty, were affiliated with The Irish Anti-Apartheid Movement. He was also a founding member of the Irish Campaign for Nuclear Disarmament (CND).

Reverend Terence McCaughey is a Presbyterian minister, and served as president of the Irish Anti-Apartheid Movement. He is currently the president of Irish anti-war lobby group Peace and Neutrality Alliance (PANA), and is a former spokesman for the Campaign for Nuclear Disarmament (CND).