The Socialist Party was formerly part of the Labour Party, which has ruled the United Kingdom since 1997 and remains a member of the Socialist International. On the bus, Saunders and some of his cohorts — they occasionally, especially the older members, address each other as "comrade" — explains their view on how the split with Labour came about. As the Third Way became the dominant voice in the Labour Party, culminating with the replacement of Neil Kinnock with Tony Blair as party leader, the Socialist cadre became increasingly disaffected. "There used to be democratic structures, political meetings" within the party, they say. The branch meetings still exist but "now, they passed a resolution calling for renationalisation of the railways, and they [the party leadership] just ignored it." They claim that the disaffection with New Labour has caused the party to lose "half its membership" and that people are seeking alternatives.
The Socialist Party was founded in the United Kingdom.