Some members may not be aware of the Met Police website which logs crimes by area. This is the link for Blackheath Ward as a whole:
http://maps.met.police.uk/access.php?area=00AZGE&sort=rate&order=a&ct=8&crimetype-button=

Note the Sub-Wards on the left: you can go through these and see a figure for each, with a map on the right showing the area in question.