The Social Democratic Federation (SDF) was the major representative of Second International socialism on British soil. As a socialist organization it is usually viewed through the distorting prism of the Russian Revolution and its aftermath. This article sets out to analyse the organization's strategy in its proper context – that of the struggle to transform Victorian and Edwardian Britain into the co-operative commonwealth. SDF views on the nature of revolution and what members called ‘palliative’ reforms are considered, as are their views on the character of the British state, the nature of democracy, the role of parliament, and the potential for violence at times of change. For them, the transition to socialism would be effected by well-fed, organized workers with a degree of education and culture, and their social reforms were designed to bring this revolutionary class into being. Campaigns against unemployment, work on school boards, boards of guardians, and local councils are found to have been conducted both as ends in themselves, and as a part of a grander strategy for the attainment of socialism. The SDF was a ‘parliamentary revolutionary party’ which sought to use reforms constructively in order to bring about the transformation of British society.