This article seeks to interpret the synthesis between anarchism and feminism as developed by a group of late nineteenth and early twentieth-century British women. It will demonstrate that the woman who embraced anarchism made a clear contribution to the growth of feminism. They offered a distinctive analysis of the reasons for female oppression, whether it was within the economic sphere or within marriage. The anarcho-feminists maintained that if an egalitarian society was ever to be built, differences in roles – whether in sexual relationships, childcare, political life or work – had to be based on capacity and preference, not gender. By combining these questions they developed a feminism that was all embracing at a time when the struggle for the vote was becoming the main question for women.