It is parasitic in the extreme. You cant relate to anyone outside the left so you have to wait for the SWP to put on an event then you hope to parasite some of its members. The Barrow People's Party and the Chorlton Anti-Tesco campaign have more members than the CPGB(PCC) so its no wonder that the SWP dont rush to share platforms with an irrelevant deeply unpolitical and completely undynamic little sect.