The British Socialist Party (BSP) was a political organization founded in 1911 in the United Kingdom. It aimed to promote socialist principles and advocate for workers' rights, aligning with the broader socialist movement in Europe. The BSP sought to unite various socialist groups and was involved in the early formation of the Labour Party. The party played a role in the political landscape during the early 20th century, particularly in the context of the growing labor movement. However, it struggled to gain significant electoral success and eventually merged with other socialist factions, leading to its decline by the late 1920s.