http://maps.met.police.uk/

From top right of page choose 'Text View' tab.

From London Boroughs on left hand side choose Lambeth from list.

From Lambeth ward list on left hand side, choose Herne Hill.

Choose a sub ward on left hand side, map on right hand side of screen will show area.

For adjoining wards, i.e. Village look at list below sub wards.