The Co-operative Party is a political party in the United Kingdom supporting co-operative principles. The party contests elections jointly with the Labour Party as "Labour and Co-operative Party" candidates. Co-operative Party members are not permitted to be members of any other political party in the UK apart from the Labour Party and Social Democratic and Labour Party (SDLP) in Northern Ireland. The Co-operative Party is a legally separate entity, and is registered as a political party with the Electoral Commission.