Mymshall Brook. Dyrham Park Farm
The London/ Barnet/Hertfordshire border goes south east and crosses the Barnet By Pass Post to the west Ridge Post to the south Dyrham Park Post to the east Dancers Hill Post to the north Bignall's Corner Rural area intersected by the A1 Mymshall Book The Mymshall Brook flows north eastwards and is joined by a tributary from the west Blanche Lane Barnet By pass A1 Dyrham Lane Dyrham Park Farm . dairy farm St. Albans Road Wash farm Sources Dyrham Park Farm. Web site