It's always hard to tell how accurate these claims, as the recording methods seem to change every 5 minutes!
http://www.rugbyadvertiser.co.uk/news/local/warwickshire-is-getting-safer-says-the-home-office-1-5314226

Lex, I think the clue here is "reported crime". That doesn't actually mean very much at all. I know people who don't bother to report crime because of the aggravation it causes them. (Typically this would be after an assault or theft.)

I would far rater see truthful and honest clear up rates for the different categories of crime.