 M12 motorway (Great Britain)

The M12 motorway was a planned motorway starting in north-east London and joining the A12 road in Essex.The 1960s scheme would have started at a junction with the M11 motorway and North Circular and ended near Brentwood, Chelmsford, or at the proposed new Maplin Sands airport; the motorway was part of the ambitious London Ringways plan to build motorways throughout London.