Britain didn't seem to solve its murder rate with a gun ban.
Please if you use Britain as an example get it from British or international sources.
UK - 1.2 homicides per 100,000 people
US - 4.8 per 100,000 people
"The number of murders and killings in England and Wales has fallen to the lowest level in nearly 30 years, Office for National Statistics figures show."
Of course, this is totally ignoring the fact that the UK has had significantly lower rates of murder than the US since before gun control measures were introduced, so comparing the two in that way is largely pointless. On the other hand, the UK has higher rates of, for example, robbery, assault, and rape, though they're measured differently so even using those would be counterproductive.
That specific point, however, is largely irrelevant unless homicide rates relationship to gun control is parabolic or something.
Now, if you do a little bit of history research, you can observe that murder rates in the US have very specific correlations with historical events. Observe:
Sources are in the chart, so if you don't have substantial criticisms, don't bother. Anyhow, crime increases from 1900 to 1916, and drops during WW1, which makes a fair bit of sense (if people are being drafted they aren't murdering/being murdered at home). Crime increases substantially when the troops return home, and increases even more when Prohibition is put in place and organized crime becomes prevalent.
Hmmm, I wonder if that will ever come up again. Anyhow, murder rates decline dramatically when prohibition is repealed in 1934, and these rates remain low until the late 1960s and early 1970s. By a complete coincidence, this period also coincides with (A) social upheaval that was far more strongly felt in the US than in any other countries and (B)
The ramping up of the Drug War. Weird that murder rates would increase at the same time as the modern form of prohibition that empowers violent cartels is put into place. Why, it's almost like deja vu!