I looked up the homicide rate for 100+ years for England and Wales. I compared numbers from before the handgun ban to those after. I used 10 years before and after because: 1) 10 is a nice objective number 2) As you expand your sample size you are also comparing years that are further apart. So you are less and less confident that what you are seeing is at least partially an effect of gun control and not a changing society 3) the ban was in 1997 so the max I could have used was 14 given the data in front of me.
Here are the annual homicide rates for England and Wales per million for 14 years before and after with 1997 in bold.(14years/1997/14 years)
9.7 10.8 10.7 11.2 11.9 10.9 10.3 10.9 12.3 11.4 11.1 12.4 13.0 11.4 (1983-1996)
11.8 Year of the Hand gun Ban
11.6 12.2 12.7 14.4 15.2 17.9 14.6 14.7 13.3 13.3 13.6 11.8 11.1 11.5 (1998-2011)
source UK gov(page 38):
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/116483/hosb0212.pdf
There is nothing here to link the the UK's hand gun ban in any way to a decrease in total homicide rates. If we were to draw a correlation it would suggest that the law has caused an increase in the homicide rate. I won't go that far. The UKs homicide rate has hovered around 1 per 100k going back to 1900.
https://en.wikipedia.org/wiki/List_of...rate_by_decade
If you want me to point out the statistically stronger correlation between gun control and an increase in burglary, rape, and assault I will. I'd rather you just looked it up for yourself, tbh.