Socialist Action (UK)

Socialist Action is a small Trotskyist group in the United Kingdom. From the mid-1980s Socialist Action became an entryist organisation, attempting to work within other organisations, with members using code names and not revealing their affiliation. It maintains a website but no publicly visible formal organisation.

The organisation was linked with the 2000–2008 Greater London mayoral administrations of Ken Livingstone, although Livingstone was never a member. Four of Livingstone's key advisers were Socialist Action members; all made the "top 25" in the Evening Standard's 2007 list of the most influential people in London. Its members have maintained leading positions in many campaigns - the National Abortion Campaign, the Campaign for Nuclear Disarmament, National Assembly Against Racism and various coalitions against the wars against Iraq, Afghanistan and Yugoslavia, for example. As a result, Socialist Action exert an influence beyond that which might be expected from so small a grouping.