Since the U.S. is nearly 6 times larger in population to the U.K. and 12 times larger than Australia, it's obviouse it's safer here than there. Didn't I hear they've outlawed knives with points on them in the U.K... interesting.
You do realize that the main contributing factor for Japan "not" invading the US during WWII was "BECAUSE" we had so many firearms in the hands of the people. To paraphrase.. "There would be a gun behind every blade of grass". For that one reason alone I'm gratefull the founders had the forsight to include the 2nd ammendment when they drafted the Constituion.