In 1900, the British Labour Party was founded at a conference in London, which aimed to unite various socialist and labor groups into a single political entity. Prior to its establishment, the needs of the working class were often overshadowed by the Conservative and Liberal parties, which dominated the political landscape. The conference was attended by prominent figures who recognized the necessity for a dedicated party that would advocate for the rights and interests of workers, leading to the formal creation of the Labour Party. The initial focus was on representing trade unions, which had gained prominence during the late 19th century as more workers sought collective bargaining for better wages and working conditions.

The Labour Party's foundation was crucial, as it established a formal political framework to address social issues such as poverty, education, and workers' rights. The party emphasized the importance of legislative changes to improve the lives of the working class, aiming to achieve this through parliamentary representation. Notable figures such as Keir Hardie, who became the first parliamentary leader, played a key role in this process. The inclusion of various trade unions underscored the growing political power of organized labor, marking a turning point in British politics that would see the interests of ordinary workers increasingly recognized in the public sphere.

Over the years, the Labour Party would evolve, adapting its policies and strategies to respond to the changing landscape of British society. By aligning itself with broader social movements and adopting progressive policies, the Labour Party positioned itself as a central actor in Britain’s political arena. The establishment of the party not only galvanized worker representation but also influenced the trajectory of leftist politics in the UK and beyond, contributing to the rise of social democratic ideologies across Europe.