Early plans The South Circular Road was planned by the Ministry of Transport in the early 20th century as part of a general programme of traffic improvements across London. In 1903, a proposal for new approach roads was submitted to the
Royal Commission on London Traffic, but was rejected. The Road Board was formed in 1910 to address traffic issues, which led to the London Arterial Road Conferences in 1913–14 that revived the earlier plans. Progress was halted because of the war, but resumed in 1920, when it was hoped it would find work for demobilised soldiers. The first section near
Woolwich was under construction by 1921, as it ran on open land that was easy to purchase, but plans for the remainder of the route had not yet been decided and there were delays due to
compulsory purchasing of properties. In 1925,
The Times announced a replacement bridge for the
Woolwich Ferry was planned as part of the South Circular project to tie in with the East Ham and Barking Bypass (now the
A13). A significant amount of new housing had been built along the route of the South Circular since the original 1903 plans, and building costs had risen because of labour and because of further demolition required. A short section from Well Hall Road to Eltham Road had been completed by 1930, aside from a bridge underneath the Hither Green – Dartford railway, and the road had been built as far west as Burnt Ash Hill by the middle of the decade.
Sir Charles Bressey's
Highway Development Survey (also known as the Bressey Report), published in 1937, showed a -long South Circular that would have a new-build section near
Wandsworth Bridge (then being rebuilt) but otherwise be a series of online improvements to existing roads.
Abercrombie redevelopment Sir
Patrick Abercrombie was frustrated by the lack of progress, and in 1933 said "There is not a single complete Ring Road in the County or Region of London". Plans for an improved South Circular were revisited as part of Abercrombie's
County of London Plan of 1943, as the southern half of one of several
ring roads around the capital. Abercrombie designated it as the "C Ring" (the third ring out from the city centre); however, the high-quality road was never built and the semi-circular route was assigned to existing roads through the southern suburbs; these roads retain their historic names. The current recognised route of the South Circular was created by local motoring organisations putting up strategically placed signposts to direct traffic.
Sir Richard Sharples, then MP for
Sutton and Cheam, felt this was inadequate and complained that "I do not think that the South Circular Road could be said to exist at all."
Ringway 2 In the 1960s, Abercrombie's plans were revived by the
Greater London Council (GLC) as the
London Ringways Plan which proposed the construction of a series of motorways in and around London to control traffic congestion. The existing South Circular route was recognised as being unsuitable for upgrading and a new motorway,
Ringway 2, was planned for construction further south. The plans were scrapped after Labour won the
GLC election that year.
Later plans In 1985, the London Chamber of Commerce and Industry proposed a £300m partial replacement for the South Circular that would have seen a dual-carriageway built over existing suburban railway lines between and
Wandsworth Bridge, and to . The Government announced a large-scale upgrade of the South Circular in the 1989
white paper Roads for Prosperity, but it was cancelled the following year after a petition signed by 3,500 local residents. In addition to the proposed property demolition around Tulse Hill, the petition complained that the road's course conveniently avoided a house belonging to then-Prime Minister
Margaret Thatcher half a mile away. ==Traffic==