I've had a look at it too and it's a bit clunky. When you hover over an area, it doesn't tell you what that area is, so you have to click on it, wait for it to load....and then you realise that you're in North Kensington! As for the average thing, Carol, I'd guess that wards were probably measured against each other and similarly for boroughs, so it's not the actual number of crimes that matters but how it compares to other areas (if you see what I mean!)
Lina Leaman ● 6067d