With the founding of ΠΣΕ, the great working class struggles and mobilizations begin. Reacting to these, in 1945 the British authorities dragged the 18 leaders of ΠΣΕ to the courts, leading to their imprisonment as punishment for their patriotic and trade union activities. The 18 leaders were charged with 15 crimes including conspiracy against the government, ownership and publication of documents inciting rebellion and more.