It has been produced by Colin Drane who runs SpotCrime.com and is a heat map compiled from the last 100 shooting related incidents he could find from the media (rather than using official figures). Obviously media reporting is a key factor in fear of crime, but paradoxically Wandsworth, which has low gun-enabled crime rates and is very cool on this map, has a fear of gun crime way above the London average.
I did not produce the map (and do not have access to the data) so cannot comment on the accuracy. However, it matches the impression I have from media coverage of gun related crime and certainly matches my view that there is relatively little gun crime in Wandsworth.
And I’m not going to comment on it beyond posing the question: when gun crime is so low in Wandsworth, and media reporting of gun related crime is low in Wandsworth, why is fear so high?