Marie Stopes, campaigner for women's rights and pioneer of family planning, opens her first clinic in London, offering a free service to married women. While Stopes's forthright and open-minded attitudes have helped to change opinion about family planning and sex, her opinions on eugenics have been criticised and are now out-of-step with current thinking.
Art and science
British-born star of Hollywood Charlie Chaplin visits London where he is greeted by thousands. In 1921 Chaplain made his film, The Kid, which told the story of a tramp who finds an abandoned baby in an alley and decides to look after him. The portrayal of poverty in the film drew on Chaplain's own experiences of growing up in a working class family in London.
The Anglo-Irish Treaty partitions Ireland into the Irish Free State (later the Republic of Ireland) and Northern Ireland. The Irish Free State was granted independence, while six of the Northern counties of Ulster decided to remain part of Britain. The treaty came into effect in 1922.