 The SCR and the other roads planned in the 1960s for central London had developed from early schemes prior to the Second World War through Sir Patrick Abercrombie's "County of London Plan, 1943" and "Greater London Plan, 1944" to a 1960s Greater London Council (GLC) scheme that would have involved the construction of many miles of motorway standard roads across the city and demolition on a massive scale.Due to the huge construction costs and widespread public opposition, most of the scheme including the SCR was cancelled in 1973.Only the East Cross Route, part of the West Cross Route and the Westway were built.