By MRA-UK: I had not meant to address this at all. I was actually looking for the latest partner homicides’ stats and stumbled across it. It seems that police performance in identifying suspects in homicide cases has taken a nosedive. Between 2008 and 2018 the number of homicides without a suspect has more than doubled (for both sexes of victim, see Figure 1, below).
Note that Figure 1 plots the number of homicides without a suspect over a three year period ending at the end of March of the year plotted. This is because the most recent ONS datasets (below) give homicide data aggregated over three year periods.
I initially thought that this increase in the number of homicide cases with no suspect might be because the number of homicides has increased. But actually the recent increase is confined to the last few years.
Note that Figure 1 plots the number of homicides without a suspect over a three year period ending at the end of March of the year plotted. This is because the most recent ONS datasets (below) give homicide data aggregated over three year periods.
I initially thought that this increase in the number of homicide cases with no suspect might be because the number of homicides has increased. But actually the recent increase is confined to the last few years.