Prior to 1918, only men over the age of 21 had the right to vote in Britain. However, during World War I, women played a vital role in the war effort, working in factories, hospitals, and other essential services. This contribution led to a growing sense that women should be rewarded for their efforts with the right to vote.
The Representation of the People Act of 1918 gave the vote to women over the age of 30 who met certain property qualifications. This was a significant step forward for women's rights, but it still excluded many women, such as those who were unmarried or did not own property. It wasn't until 1928 that all women in Britain over the age of 21 gained the right to vote on an equal basis with men.