New police memorial honours officers killed in the line of duty

4.5m monument at national memorial arboretum in Staffordshire will be unveiled on Wednesday

If PC Fiona Bone had turned a different way, if she had been sick that day, if her degree in film production studies had led to more work, her father, Paul, would have not spent the last nine years grieving.

For officers and their families, the difference between life and death in policing can be terribly slight.