A circle of historians inside the Communist Party of Great Britain (CPGB) formed in 1946 and became a highly influential cluster of British Marxist historians, who contributed to history from below and class structure in early capitalist society. While some members of the group (most notably Christopher Hill and E. P. Thompson) left the CPGB after the 1956 Hungarian Revolution, the common points of British Marxist historiography continued in their works. They placed a great emphasis on the subjective determination of history.