The Information Research Department (IRD) was a secret Cold War propaganda department of the British Foreign Office, created to publish anti-communist propaganda, including black propaganda, provide support and information to anti-communist politicians, academics, and writers, and to use weaponised information, but also disinformation and "fake news", to attack not only its original targets but also certain socialists and anti-colonial movements. Soon after its creation, the IRD broke away from focusing solely on Soviet matters and began to publish pro-colonial propaganda intended to suppress pro-independence revolutions in Asia, Africa, Ireland, and the Middle East. The IRD was heavily involved in the publishing of books, newspapers, leaflets and journals, and even created publishing houses to act as propaganda fronts, such as Ampersand Limited. Operating for 29 years, the IRD is known as the longest-running covert government propaganda department in British history, the largest branch of the Foreign Office, and the first major anglophone propaganda offensive against the USSR since the end of World War II. By the 1970s, the IRD was performing military intelligence tasks for the British Military in Northern Ireland during The Troubles.

Guy Francis de Moncy Burgess was a British diplomat and Soviet double agent, and a member of the Cambridge Five spy ring that operated from the mid-1930s to the early years of the Cold War era. His defection in 1951 to the Soviet Union, with his fellow spy Donald Maclean, led to a serious breach in Anglo-United States intelligence co-operation, and caused long-lasting disruption and demoralisation in Britain's foreign and diplomatic services.