 Once the Ringways were cancelled completely, there seemed little point in finishing the M23 as it would drop all its traffic onto suburban streets.However, the M23 up to Streatham remained a projected route throughout the 1970s, and appeared on some road atlases of the time.The Wallington M23 Action Group campaigned for the motorway to be formally cancelled, as the inability to develop land along the line of the proposed M23 had led to planning blight in the area.