M25 motorway re-examined as a motorway route in Sir Charles Bressey's and Sir Edwin Lutyens' "The Highway Development Survey, 1937". Sir Patrick Abercrombie's "County of London Plan, 1943" and "Greater London Plan, 1944" proposed a series of five roads encircling the capital. The northern sections of the M25 follow a similar route to the World War II Outer London Defence Ring, a concentric series of tanks and pillboxes designed to slow down a potential German invasion of the capital. Little was done to progress these plans until the 1960s when the Greater London Council developed its London Ringways plan consisting of four
West London Orbital – every day, and the London Overground supports this type of travel. London Overground train service improvements are therefore needed to support new jobs and housing throughout inner London and parts of outer London.” The West London Alliance group of local authorities have agreed that the West London Orbital Scheme is to be a shared strategic infrastructure priority across borough boundaries, and that it will be incorporated in to all Local Plans. Discussions are currently underway between West London councils and London government on the future of the scheme. A number of independent analysis of the scheme have been undertaken,