Update for Police Authorities in England & Wales, these are for the 12 months to September 2015, a slight increase in the previous year due to a bad spate of homicides in June for some reason.
Gold medal for lowest homicide rate over the 12 months goes to Durham in Northeast England which had 1 homicide among its approximately 600,000 residents.
Meanwhile the murder capital over the year was Gloucestershire which saw 9 homicides in its area home to 550,000.