The M1, as it enters the NW4 postcode, is the southernmost section of this motorway.
The road is more informally called the "Hendon Urban Motorway" its name when proposed in 1961.
In the late 1950s, the M1 was still planned to head all the way to Marble Arch. In 1961, the proposals were made for the Hendon Urban Motorway between Watford and the A406 North Circular Road, part of a grander plan.
This section of the M1 was constructed in 1967.
