So, lots of legally held guns, kept by licenced owners and stored safely. One or two ancient family 'heirlooms' that nobody knows how to use.
Not a single semi- or fully-automatic assault rifle.
Not a single admission of illegally held firearms.
560000 is the number of recorded guns held. I would imagine in the shadier part of society, sometimes much closer to home than you'd care to imagine, that the number of illegally owned guns is at least equal to that.
I would hope that you would need extra special permission to procure and keep any sort of automatic assault rifle in the UK. Yet in the US it seems they are 'freely' available to anyone, with horrific consequences.
It's not the legally held guns we need to be worrying so much about in the UK....