Category:Social Democratic Party (UK)
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Category:1981 establishments in the United Kingdom
Category:1988 disestablishments in the United Kingdom
Category:Centrist political parties in the United Kingdom
Category:History of the Liberal Democrats (UK)
Category:Labour Party (UK) breakaway groups
Category:Political parties disestablished in 1988
Category:Political parties established in 1981
Category:Wikipedia categories named after political parties in the United Kingdom