UK doesn't have the same mindset as the states,it really is a lot more civilised, the people aren't conditioned or inured to gun violence, one thing that surprises me about Canada, sure there's gun violence, even a bloke dressed as a copper last year to go on a murder rampage, but given the close proximity to the states the weekly/daily spree killings haven't caught on here.
And the UK clamped down on pistol ownership rabidly.