...rads are your friend said:they arent killing machins like most euro and aussies think)
Yes they are. That's literally what they were designed to do. You may not use them for that now, but as machines, they were designed solely with the intention to kill.
Now, to answer the OP, i'm glad that guns here in the UK are, for the most part, illegal. It makes it harder even for criminals to get guns when the market isn't flooded with firearms anyway, hence knife crime is more common here than gun crime, regardless of what The Daily Mail would have people believe, and in no way is UK gun crime comparable to that of the US.
Frankly, there is no need for any civilian to have a device intended to kill another. Many would simply be tempted to use it.