 It was never constructed due to large-scale opposition from many quarters.The NCR would have started in Harlesden with its western end having a junction to the east of Willesden Junction station with the West Cross Route, the western section of Ringway 1 coming north from Shepherds Bush.Also connected to the junction here would have been Harrow Road (A404) and an unbuilt motorway that would have headed south-west along the National Rail North London Line to meet the M4 at Gunnersbury.