 This extension was designated as the A12 and required just the sort of controversial construction methods and widescale demolitions of residential areas that caused the 1960s schemes to be cancelled and provoked to the major M11 link road protest.After the new road was built, the northern part of the ECR became the A12.Had the North Cross Route been built incoming traffic from the M11 would have been able to continue west from Hackney Wick junction on a motorway standard road past Dalston, Highbury, Camden Town, under West Hampstead to Kilburn (where a link to the M1 would have been built) and then west to Harlesden, where it would have connected with the West Cross Route, running south to connect with the A40, A4 and on to cross the Thames to connect with the South Cross Route.