Morton was born in Suffolk, the son of a Yorkshire farmer. He had two siblings, a sister Kathleen and a brother Max. He attended school in Bury until he was 16 and then at boarding school in Eastbourne. He then studied the English tripos at Peterhouse, Cambridge from 1921 to 1924, graduating with a third-class degree. While there he developed friends around the Labour group, notably Allen Hutt who became a prominent typographer and Ivor Montagu who was to become a film director. He encountered socialist ideas, moving towards the communist group at the university that formed around Maurice Dobb. After college he taught at Steyning Grammar School in Sussex, where under his influence, most of the staff supported the General Strike in 1926. Dismissed as a consequence he taught for a year at A. S. Neill's progressive school, Summerhill at that time in Lyme Regis. He next moved to London to write and run a bookshop in Finsbury Circus. In 1929 he joined the Communist Party of Great Britain and along with his wife, Vivien, remained a member for the rest of his life. Vivien was the daughter of the veteran socialist Thomas A Jackson. Morton belonged to a group of London left-wing intellectuals of the 1930s, while working as a journalist for the Daily Worker. He served on the editorial board of the paper. His friends at that time included A. L. Lloyd and Maurice Cornforth; he assisted Victor B. Neuburg. In 1932 and 1933 he was involved in a debate with F. R. Leavis, in the pages of Scrutiny. He participated in the Hunger marches of 1934. His 1938 A People's History of England, published by the Left Book Club, was adopted quasi-officially as the CPGB national history, and went through later editions on that basis. During the early part of the Second World War, he was the full-time district organiser of the Communist Party’s East Anglia district and became chair of the district committee for many years. Morton spent most of the 1939-45 World War in the Royal Artillery labouring on construction sites in the Isle of Sheppey. He was part of the group of leading communist historians invited to Moscow in 1954/5, with Christopher Hill, Eric Hobsbawm, and the Byzantine historian Robert Browning. Morton was a founding member of the William Morris Society in 1955. He participated in the People's March for Jobs in the early 1980s, a demonstration of 500 anti-unemployment protesters who marched to London from Northern England. Morton died in 1987 at his home in The Old Chapel at Clare in Suffolk, aged 84.
Library
A. L. Morton bequeathed his library to the university library of Rostock University in Rostock, Mecklenburg-Vorpommern, Germany. The collection comprises more than 3,900 volumes, including all foreign-language editions of the People's History of England, and many contain notations by A. L. Morton's own hand.
