What did the suffragettes in Britain do?

The suffragettes sought to secure the vote for women in Britain. They did this in many ways, risking imprisonment and other reprisals for their efforts.
In Britain the suffragette movement was particularly associated with an organization known as the Women's Social and Political Union (WSPU). This group formed in the early 20th century although debates about granting the vote to women had been brewing since the mid-19th century. The WSPU fought against the mainstream media and an entrenched conservatism that seemed determined to deny women the vote. Those involved in this movement used various measures, including media campaigns, protests, and fundraising to achieve their cause.
The suffragettes turned to increasingly radical methods, eventually resorting to outright civil disobedience (one might even characterize it as a form of "domestic terrorism") and coming into conflict with authorities. Many of the members of the movement were actually jailed and even went on hunger strikes while in prison. In response, prison officials actually force-fed some of these hunger strikers.
The outbreak of World War I and the willingness of many suffragettes to involve themselves in the war effort turned public opinion in their favor. Female property owners over the age of 30 were granted the vote in the general election of 1918, and female suffrage finally became universal in Britain in 1928.