Chris Nineham is one of the founder members and now one of the National Officers of the Stop the War Coalition in the UK. He was one of the main organisers of the 15 February 2003 anti-war protest against the invasion on Iraq.
He was a leading member of Globalise Resistance, the anti-globalisation network that mobilised thousands on protests in Genoa and elsewhere and he played an important role in the European and World Social Forums. He was a member of the Trotskyist Socialist Workers’ Party until he resigned in 2010.