The BMC ADO16 is a range of small family cars built by the British Motor Corporation (BMC) and, later, British Leyland. Launched in 1962, it was Britain's best-selling car from 1963 to 1966 and from 1968 to 1971. The ADO16 was marketed under various make and model names; however, the Austin 1100 and Morris 1100 were the most prolific of all the ADO16 variants. The car's ubiquity at the height of its popularity led to it simply being known as the 1100 (eleven-hundred) in its home market. Also made with a 1300cc engine, it was then typically called 1300.

British Leyland was an automotive engineering and manufacturing conglomerate formed in the United Kingdom in 1968 as British Leyland Motor Corporation Ltd (BLMC), following the merger of Leyland Motors and British Motor Holdings. It was partly nationalised in 1975, when the UK government created a holding company called British Leyland, later renamed BL in 1978. It incorporated much of the British-owned motor vehicle industry, which in 1968 had a 40% share of the UK car market, with its history going back to 1895. Despite containing profitable marques such as Jaguar, Rover, and Land Rover, as well as the best-selling Mini, BLMC had a troubled history, leading to its eventual collapse in 1975 and subsequent part-nationalisation.