Between 1920 and 1986 debates about London government bore little relationship to economic realities. Policy makers sought to control London's growth but rarely shaped or determined outcomes, which had more to do with individual decision-making. Sprawling metropolitan growth encouraged debate and generated plans about how best to govern Greater London. However, social polarisation between middle-class suburbs and working-class inner city areas hindered progress. Master plans for the county of London were drawn up and in 1946 Abercrombies' proposals for decentralisation were accepted. Rapid population growth, however, undermined the principle of the master plans and local development plans were formulated which took account of growth. Abercrombies' ideal of decentralisation was achieved not by policy but by market forces. The formation of the Greater London Council reflected recognition of the need to extend London's government beyond the old L.C.C. area. However, opposition by the boroughs, especially in the suburbs, curtailed the G.L.C.'s activities and Conservative hostility ultimately led to abolition in 1986.