I found the reports indistinguishable from each other. If I want to get at the facts without a load load of waffle, the place I first turn to is the Daily Telegraph, a right leaning newspaper that doesn't pander to the bigots like the right leaning tabloids.
http://www.telegraph.co.uk/news/uknews/2559087 /Online-map-of-every-crime-in-London-unveiled- by-Metropolitan-Police.html
Crime mapping is nothing new. Four police forces already do it. It is only when something happens in London that it gets reported because the majority of newspapers are London based and their reporting is London centric.
I do not really see the point of web based crime mapping. People usually have an idea about their own communities and already know where the crime takes place.
So if my car gets vandalised, I can put my postcode into a website and it will tell me I live in a moderately average crime area. Am I supposed to be reassured? I would most probably think that I would sooner there were policemen on the streets deterring such crimes than number crunching in an office feeding stats into a website.