The Women's Social and Political Union (WSPU) was a political movement that campaigned for women's suffrage (the right to vote) in the United Kingdom from 1903 to 1918. Also known as the suffragettes, the WSPU was lead by Emmeline Pankhurst (1858-1928) and her daughters Christabel and Sylvia.

The WSPU's slogan was "Deeds, Not Words", emphasising their militant tactics. Unlike other campaigners (suffragists), who used peaceful techniques, the WSPU often broke the law, including breaking windows and setting fire to post boxes.

In 1999, 'Time' listed Emmeline Pankhurst as one of the '100 Most Important People of the 20th Century' for helping women win the right to vote. In 1918, the 'Representation of the People Act' granted votes to all men over the age of 21 and women over the age of 30. Sadly, the Manchester-born leader passed away mere weeks before the 'Representation of the People (Equal Franchise) Act' of 1928 extended the vote to all women over 21.

More Info: en.m.wikipedia.org