SWP /ˌes dʌbəljuː ˈpiː/ abbreviation for, Socialist Workers Party
a British political party that is very left-wing. It is known for producing a newspaper called Socialist Worker, which is sold by its members on the street, and for always being involved in political demonstrations (=when a big crowd of people publicly protest about something).

[TahlilGaran] Dictionary of Contemporary English ▲