I've done some research also, on UK gun crime.

Page 35 of this government report pretty much sums up whether handgun crime has increased or decreased since law was enacted, although it doesn't mean they will admit it-

http://www.homeoffice.gov.uk/rds/pdfs07/hosb0207.pdf

Note the government's public statement says these statistics show reduced hand gun crime rate, even though the numbers obviously show otherwise.

I was led there by an interesting article here-
http://www.timesonline.co.uk/tol/news/uk/crime/article2328368.ece
that stated-
"The Home Office has repeatedly denied gun crime is rising. Last week it pointed to the latest annual crime statistics, which appeared to show that overall gun crime was 13% down on the previous year.

But in his letter to Smith, released today, Davis said these claims were contradicted by figures “buried” in a Home Office statistical bulletin, published ear-lier this year. “[Here] we find the most revealing indication of the true gun-re-lated violence sweeping Britain. Gun-related killings and injuries (excluding air weapons) have increased over fourfold since 1998,” he wrote. "

So I looked up the references and there ya go.. granted this was 2007, so I am not sure how the last three years have gone..

Make your sound your own!
.. I do not work here, but the benefits are still awesome