The Women's Social and Political Union (WSPU) was the leading militant organisation campaigning for Women's suffrage in the United Kingdom, 1903–1917. Its membership and policies were tightly controlled by Emmeline Pankhurst and her daughters Christabel and Sylvia (although Sylvia was eventually expelled). It was best known for hunger strikes (and forced feeding), for breaking windows in prominent buildings, and for night-time arson of unoccupied houses and churches.
The Women's Social Political Union was founded at the Pankhurst family home in Manchester on 10 October 1903 by six women, including Emmeline and Christabel Pankhurst, who soon emerged as the group's leaders. The Women's Social Political Union had split from the non-militant National Union of Women's Suffrage Societies, disappointed at the lack of success its tactics of persuading politicians through meetings had found.
The founders decided to form a women-only organisation, which would campaign for social reforms, largely in conjunction with the Independent Labour Party. They would also campaign for an extension of women's suffrage, believing that this was central to sexual equality. To illustrate their more militant stance, they adopted the slogan "Deeds, not words". By 1913, the WSPU appointed the fiercely militant feminist Nora Dacre Fox (later known as Norah Elam) as General Secretary. Dacre Fox operated as a highly effective propagandist delivering rousing speeches at the WSPU weekly meetings and writing many of Christabel Pankhurst's speeches.
In 1905, the group convinced the Member of Parliament Bamford Slack to introduce a women's suffrage bill, which was ultimately talked out, but the publicity spurred rapid expansion of the group. The WSPU changed tactics following the failure of the bill; they focused on attacking whichever political party was in government and refused to support any legislation which did not include enfranchisement for women. This translated into abandoning their initial commitment to also supporting immediate social reforms.